Ragammanavara Santhappa

@ulsan.ac.kr

Postdoctoral Professional Researcher in School of Chemical Engineering
University of Ulsan

Ragammanavara Santhappa


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https://researchid.co/santhappa
I am Dr. R. Shanthappa, a researcher dedicated to the development and optimization of advanced energy storage materials, with a specific focus on metal-ion batteries. My work aims to address the growing demand for high-performance, cost-effective, and sustainable energy storage technologies.

RESEARCH, TEACHING, or OTHER INTERESTS

Physics and Astronomy, Materials Science, Electrochemistry, Condensed Matter Physics
28

Scopus Publications

588

Scholar Citations

16

Scholar h-index

21

Scholar i10-index

Scopus Publications

  • Eco-friendly synthesis of hierarchical heterostructured CsV3O8/V2O5 composite cathode: lattice stabilization and vanadium dissolution resistance for long-life aqueous zinc-ion batteries
    Hari Bandi, R. Shanthappa, Sowjanya Vallem, Daniel Ioan Stroe, Jae Su Yu
    Advanced Composites and Hybrid Materials, 2026
    Developing durable and high-capacity cathode materials is key to advancing aqueous zinc-ion batteries (ZIBs). Herein, we report a previously unreported hierarchical heterostructured CsV3O8/V2O5 composite (HH–CsVO/VO) cathode synthesized via a simple, eco-friendly and low energy ambient-temperature stirring method that avoids toxic solvents and high-temperature treatments. The incorporation of Cs+ ions into the VO framework induces significant lattice compression, compressive strain, and new V coordination environments, leading to mixed-valence V states (V5+/V4+/V3+), as confirmed by solid-state 51V nuclear magnetic resonance (NMR) spectroscopy and ex-situ X-ray photoelectron spectroscopy (XPS) analyses. This structural modulation is accompanied by band gap narrowing (2.71 → 2.19 eV) and a reduced work function (5.00 → 4.14 eV), enhancing redox kinetics and Zn²⁺ intercalation pathways. Raman and Fourier-transform infrared spectroscopy analyses reveal Cs-induced lattice distortion and compressive strain, while ultraviolet photoelectron spectroscopy confirms interfacial electronic modulation. Ex-situ X-ray diffraction and XPS demonstrate highly reversible phase evolution and structural stability during cycling. The HH–CsVO/VO electrode delivers a high reversible capacity of 482.7 mAh g− 1 after 200 cycles at 0.3 A g− 1 and maintains 240.63 mAh g− 1 after 3000 cycles at 3 A g− 1, outperforming pristine VO. Notably, the composite exhibits suppressed voltage polarization and significantly reduced V dissolution, supported by immersion tests and stable cycling. Although Cs–O bonding is not vibrationally active, it is proposed to stabilize vanadyl surface groups and limit dissolution. This work highlights how interfacial engineering and electronic modulation, achieved through green chemistry, can enable high-performance aqueous ZIB cathodes.
  • A Robust Dual-layer Interphase with Zincophilic and Anticorrosion Properties for Stabilizing Zn Metal Anodes
    Tian Wang, Ya Xiao, Shenqiu Xu, Weiwei Xiang, Shaocong Tang, Obula Reddy Ankinapalli, Anki Reddy Mule, Ragammanavara Shanthappa, Jae Su Yu
    Small, 2025
    The construction of an artificial interphase for a stable metallic zinc (Zn) anode is an effective method to achieve excellent electrochemical performance for aqueous Zn metal batteries. In this report, a dual‐layer interphase of silver and titanium dioxide nanoparticles is rationally designed on the Zn electrode surface based on enhancing Zn affinity and interfacial anticorrosion, which enables multifunctional regulation of the electrode/electrolyte interface, improving electrochemical stability and uniform Zn deposition. Specifically, in this dual‐layer interphase architecture, the underlying zincophilic interphase can balance the interfacial electric field and achieve homogeneous initial Zn nucleation. The vacancy effect of the anticorrosion interphase at the upper layer regulates the Zn ion migration kinetics, thereby inducing dendrite‐free Zn deposition behavior. As a result, the advanced Zn symmetric cells deliver an excellent cycling performance (3800 h at 1.0 mA cm −2 /1.0 mAh cm −2 and 2000 h at 5.0 mA cm −2 /2.0 mAh cm −2 ), and the assembled AT@Zn//I 2 cell achieves stable operation of 5000 cycles at 2.0 C. This concept of a dual‐layer interphase design presents an appealing avenue for reversible Zn metal anodes.
  • Effect of ammonia solution on the electrochemical properties of magnesium manganese oxide material for aqueous zinc-ion batteries
    Wasim Akram Syed, Ashok Kumar Kakarla, Hari Bandi, R. Shanthappa, Jae Su Yu
    Journal of Magnesium and Alloys, 2025
    • Ammonia solution enhances the electrode structure of Mg 2+ -Mn 3 O 4 , boosting conductivity and capacity retention during cycling. • Ex-situ XRD reveals reversible Zn 2+ and H + ion insertion, with Mg 2+ stabilizing the structure and NH 4 OH improving ion distribution and conductivity. • Mg 2+ -Mn 3 O 4 –8 ml composite shows excellent rate performance of 94.39 mA h g -1 at 10 A g -1 and 173.58 mA h g -1 at 0.5 A g -1 . • After 2100 cycles at 5 A g -1 , the composite retains 86.87 mA h g -1 , demonstrating remarkable cycle life. • Mg 2+ and NH 4 OH synergistically enhance Zn 2+ insertion and structural integrity, making the composite a strong candidate for durable energy storage systems. Aqueous zinc (Zn)-ion batteries (AZIBs) have gained significant interest in energy storage due to several unique advantages. Utilizing water-based electrolytes enhances environmental sustainability, while the abundance and affordability of Zn offer economic benefits. Manganese (Mn)-based materials, commonly used as cathodes in these batteries, provide high theoretical capacity, high electrical conductivity, and good structural stability. However, these materials suffer from capacity degradation over repeated cycles due to structural collapse and limited conductivity. To address this problem, we synthesized a magnesium (Mg)- and Mn-based composite, Mg 2+ -Mn 3 O 4 , using the hydrothermal method with an optimized amount of ammonium hydroxide (NH 4 OH) solution. This approach effectively stabilizes the structure during cycling, enhancing both capacity retention and conductivity. The Zn 2+ /H + intercalation/deintercalation process was confirmed by experimental results and ex-situ X-ray diffraction analysis, which demonstrates that Mg 2+ , along with optimized NH 4 OH amount, prevents structural collapse and improves conductivity. Under optimal process conditions, the composite electrode (Mg 2+ -Mn 3 O 4 –8 ml) achieved a capacity of 173.58 mA h g –1 at 0.5 A g –1 , with excellent rate performance of 71.39 mA h g –1 at 10 A g –1 . Remarkably, even at 5 A g –1 , the electrode maintained a capacity of 86.87 mA h g –1 over 2100 cycles, underscoring the role of Mg 2+ and NH 4 OH in enhancing the reversible insertion/extraction stability of Zn 2+ in Mn-based layered materials. This study presents a novel strategy for metal-ion incorporation in Mn-based AZIBs, offering insights into the optimization of cathode materials and advancing research on associated storage mechanisms.
  • Unraveling electrochemical performance of magnesium vanadate-based nanostructures as advanced cathodes for rechargeable aqueous zinc-ion batteries
    R. Shanthappa, Ashok Kumar Kakarla, Hari Bandi, Wasim Akram Syed, Jae Su Yu
    Journal of Magnesium and Alloys, 2025
    • The magnesium vanadate-based nanostructures materials were prepared by a single-step solvothermal method. • The MgVO-3 h electrode exhibited excellent cycling performance and long-term cyclability. • The structural stability and electrochemical properties of the electrode were examined using ex-situ analysis techniques. • The magnesium vanadate-based materials were used as a cathode for aqueous zinc-ion batteries. High-performance aqueous zinc (Zn)-ion batteries (AZIBs) have emerged as one of the greatest favorable candidates for next-generation energy storage systems because of their low cost, sustainability, high safety, and eco-friendliness. In this report, we prepared magnesium vanadate (MgVO)-based nanostructures by a facile single-step solvothermal method with varying experimental reaction times (1, 3, and 6 h) and investigated the effect of the reaction time on the morphology and layered structure for MgVO-based compounds. The newly prepared MgVO-1 h, MgVO-3 h and MgVO-6 h samples were used as cathode materials for AZIBs. Compared to the MgVO-1 h and MgVO-6 h cathodes, the MgVO-3 h cathode showed a higher specific capacity of 492.74 mA h g -1 at 1 A g -1 over 500 cycles and excellent rate behavior (291.58 mA h g -1 at 3.75 A g -1 ) with high cycling stability (116 %) over 2000 cycles at 5 A g -1 . Moreover, the MgVO-3 h electrode exhibited good electrochemical performance owing to its fast Zn-ion diffusion kinetics. Additionally, various ex-situ analyses confirmed that the MgVO-3 h cathode displayed excellent insertion/extraction of Zn 2+ ions during charge and discharge processes. This study offers an efficient method for the synthesis of nanostructured MgVO-based cathode materials for high-performance AZIBs.
  • Green synthesis and interface engineering of CoMoO4–Ag heterostructures: Enhanced electrochemical performance for lithium-ion batteries
    Hari Bandi, Rohit Dahule, Ashok Kumar Kakarla, Ryo Maezono, D. Narsimulu, Syed Wasim Akram, R. Shanthappa, Jae Su Yu
    Chemical Engineering Journal, 2025
  • Unraveling Energy Storage Performance and Mechanism of Metal–Organic Framework-Derived Copper Vanadium Oxides with Tunable Composition for Aqueous Zinc-Ion Batteries
    Ashok Kumar Kakarla, Hari Bandi, Wasim Akram Syed, D. Narsimulu, R. Shanthappa, Jae Su Yu
    Small Methods, 2025
    Achieving high‐performance aqueous zinc (Zn)‐ion batteries (AZIBs) requires stable and efficient cathode materials capable of reversible Zn‐ion intercalation. Although layered vanadium oxides possess high Zn‐ion storage capacity, their sluggish kinetics and poor conductivity present significant hurdles for further enhancing the performance of AZIBs. In response to this challenge, a dissolution‐regrowth and conversion approach is formulated using metal–organic frameworks (MOFs) as a sacrificial template, which enables the in situ creation of copper vanadium oxides (CuVOx) with porous 1D channels and distinctive nanoarchitectures. Owing to their distinctive structure, the optimized CuVOx cathode experiences a reaction involving the synergistic insertion/extraction of Zn2+, resulting in rapid Zn2+ diffusion kinetics and enhanced electrochemical activity postactivation. Specifically, the activated electrode delivers a reversible capacity of 519 mAh g−1 at 0.5 A g−1 for AZIBs. It is noteworthy that the electrode exhibits a remarkable reversible rate capacity of 220 mAh g−1 at 5 A g−1 with excellent durable cycleability, retaining 88% of its capacity even after 3000 cycles. Various ex situ testing methods endorse the reversible insertion/extraction of Zn2+ in the CuVOx cathode. This study provides a novel insight into high‐performance MOF‐derived unique structure designs for AZIB electrodes.
  • Nickel Vanadate Cathode Induced In Situ Phase Transition for Improved Zinc Storage by Low Migration Barrier and Zn2+/H+ Co-Insertion Mechanism
    Hari Bandi, Ashok Kumar Kakarla, Rohit Dahule, Ryo Maezono, D. Narsimulu, R. Shanthappa, Jae Su Yu
    Small, 2025
    Designing cathode materials that exhibit excellent rate performance and extended cycle life is crucial for the commercial viability of aqueous zinc (Zn)‐ion batteries (ZIBs). This report presents a hydrothermal synthesis of stable Ni0.22V2O5·1.22H2O (NVOH) cathode material, demonstrating high‐rate performance and extended cycle life. A successful in situ phase transformation yields Zn3(OH)2V2O7·nH2O (ZVO), which undergoes an irreversible phase transition and exhibits exceptional energy storage properties. The procedure maintains the lattice structure of ZVO and ensures high structural stability throughout the phase transformation. The NVOH cathode material exhibits the discharge capacities of 399 mA h g−1 at a rate of 1 A g−1 after 400 cycles and 303 mA h g−1 at 10 A g−1 after 2000 cycles. Density functional theory calculations indicate that the material is protected by electrostatic forces and exhibits structural stability, with a Zn‐ion migration barrier of 0.32 eV across the host lattice and the electrode–electrolyte interface. Due to these properties, NVOH also exhibits high energy/power densities of 395 Wh kg−1/406 W kg−1 at 0.5 A g−1 and 288 Wh kg−1/8830 W kg−1 at 10 A g−1. Ex situ characterizations indicate structural modifications and irreversible phase changes of NVOH, highlighting the potential of H+ intercalation and in situ phase transitions for high‐performance aqueous ZIBs.
  • Facile synthesis of cobalt vanadate as high-capacity and durable anode material for lithium-ion batteries
    D. Narsimulu, B. Nageswara Rao, J. Udaya Bhanu, R. Shanthappa, Hari Bandi, Jae Su Yu
    Journal of Energy Storage, 2024
  • Copper substituted manganese Prussian blue analogue composite nanostructures for efficient aqueous zinc-ion batteries
    Wasim Akram Syed, Ashok Kumar Kakarla, Hari Bandi, R. Shanthappa, Jae Su Yu
    Journal of Energy Storage, 2024
  • Structural engineering of potassium vanadate cathode by pre-intercalated Mg2+ for high-performance and durable rechargeable aqueous zinc-ion batteries
    Ashok Kumar Kakarla, Hari Bandi, Wasim Akram Syed, R. Shanthappa, Jae Su Yu
    Journal of Magnesium and Alloys, 2024
    • A hydrothermal process was used to effectively synthesize Mg 2+ -intercalated potassium vanadate (KVO) (MgKVO). • The incorporation of Mg 2+ increases the spacing of KVO, expands the transportation channel, and enhances the electrochemical performance. • MgKVO outperforms KVO, indicating a high cycle capacity of 457 mAh g -1 at 0.5 A g -1 and an excellent rate capability of 298 mAh g -1 at 5 A g -1 . • The MgKVO electrode delivers superior stability at 3 A g -1 of 102% over 1300 cycles. • These characteristics make MgKVO cathodes highly suitable for aqueous zinc-ion batteries. Aqueous zinc (Zn)-ion batteries (AZIBs) have the potential to be used in massive energy storage owing to their low cost, eco-friendliness, safety, and good energy density. Significant research has been focused on enhancing the performance of AZIBs, but challenges persist. Vanadium-based oxides, known for their large interlayer spacing, are promising cathode materials. In this report, we synthesize Mg 2+ -intercalated potassium vanadate (KVO) (MgKVO) via a single-step hydrothermal method and achieve a 12.2 Å interlayer spacing. Mg 2+ intercalation enhances the KVO performance, providing wide channels for Zn 2+ , which results in high capacity and ion diffusion. The combined action of K + and Mg 2+ intercalation enhances the electrical conductivity of MgKVO. This structural design endows MgKVO with excellent electrochemical performance. The AZIB with the MgKVO cathode delivers a high capacity of 457 mAh g -1 at 0.5 A g -1 , excellent rate performance of 298 mAh g -1 at 5 A g -1 , and outstanding cycling stability of 102% over 1300 cycles at 3 A g -1 . Additionally, pseudocapacitance analysis reveals the high capacitance contribution and Zn 2+ diffusion coefficient of MgKVO. Notably, ex-situ X-ray diffraction, X-ray photoelectron spectroscopy, and Raman analyses further demonstrate the Zn 2+ insertion/extraction and Zn-ion storage mechanisms that occurred during cycling in the battery system. This study provides new insights into the intercalation of dual cations in vanadium oxides and offers new solutions for designing cathodes for high-capacity AZIBs.
  • Polyaniline layered N-doped carbon-coated iron oxide nanocapsules for extremely active Li-ion battery anode and oxygen evolution reaction
    Ashok Kumar Kakarla, Hari Bandi, R. Shanthappa, Wasim Akram Syed, Tian Wang, Jae Su Yu
    Carbon, 2024
  • Hydrogen Peroxide Tuned Morphology and Crystal Structure of Barium Vanadate-Based Nanostructures for Aqueous Zinc-Ion Storage Properties
    R. Shanthappa, Ashok Kumar Kakarla, D. Narsimulu, Hari Bandi, Wasim Akram Syed, Tian Wang, Jae Su Yu
    Small Methods, 2024
  • Improved rate and cycling capability of V2O5@MoS2 nanocomposites as an advanced cathode material for rechargeable aqueous zinc-ion batteries
    Wasim Akram Syed, Ashok Kumar Kakarla, Hari Bandi, R. Shanthappa, Jae Su Yu
    Sustainable Materials and Technologies, 2024
  • MgV3O8 incorporated carbon nanofibers as anode material for high-performance lithium-ion batteries
    R. Shanthappa, D. Narsimulu, Ashok Kumar Kakarla, Jae Su Yu
    Journal of Alloys and Compounds, 2024
  • Selenium incorporated sodium vanadate nanobelts as high-performance electrode material for long-lasting aqueous zinc-ion batteries and supercapacitors
    R. Shanthappa, Obula Reddy Ankinapalli, Ashok Kumar Kakarla, D. Narsimulu, Hari Bandi, Wasim Akram Syed, Jae Su Yu
    Chemical Engineering Journal, 2023
  • Facile synthesis of N-doped reduced graphene oxide matrix-covered porous Fe2VO4 hybrid composite nanostructures as anode material for lithium-ion batteries
    Ashok Kumar Kakarla, D. Narsimulu, Hari Bandi, R. Shanthappa, Jae Su Yu
    Journal of Alloys and Compounds, 2023
  • Multifunctional hexagonal-shaped zinc vanadate nanostructures for lithium-ion battery and NH3 gas sensor applications
    Hari Bandi, Ashok Kumar Kakarla, Kedhareswara Sairam Pasupuleti, R. Shanthappa, P.P. Waifalkar, Moon-Deock Kim, Jae Su Yu
    Materials Today Chemistry, 2023
  • High-Capacity and Long-Life Manganese Vanadium Oxide Composite as a Cathode for Aqueous Zinc-Ion Batteries
    D. Narsimulu, B. N. Vamsi Krishna, R. Shanthappa, Hari Bandi, Jae Su Yu
    Advanced Materials Technologies, 2023
  • High-Capacity Calcium Vanadate Composite with Long-Term Cyclability as a Cathode Material for Aqueous Zinc-Ion Batteries
    Daulatabad Narsimulu, Ragammanavara Shanthappa, Hari Bandi, Jae Su Yu
    ACS Sustainable Chemistry and Engineering, 2023
  • Carbon-Shielded Selenium-Rich Trimetallic Selenides as Advanced Electrode Material for Durable Li-Ion Batteries and Supercapacitors
    Ashok Kumar Kakarla, Hari Bandi, R. Shanthappa, Jae Su Yu
    Small Methods, 2023
  • Multi-walled carbon nanotubes interlinked vanadium selenite nanocomposites as a positive electrode for high-performance aqueous zinc-ion batteries
    R. Shanthappa, Ashok Kumar Kakarla, D. Narsimulu, Hari Bandi, Jae Su Yu
    Journal of Alloys and Compounds, 2023
  • Two-dimensional porous β-Co(OH)2 and Co3O4 hexagonal nanoplates as stable and high-performance anode for lithium-ion batteries
    D. Narsimulu, R. Shanthappa, Ashok Kumar Kakarla, B.N. Vamsi Krishna, Hari Bandi, Jae Su Yu
    Journal of Alloys and Compounds, 2023
  • Rational design of MXene-MoS2 heterostructure with rapid ion transport rate as an advanced anode for sodium-ion batteries
    Tian Wang, Kai Yao, Yongbin Hua, Edugulla Girija Shankar, R. Shanthappa, Jae Su Yu
    Chemical Engineering Journal, 2023
  • Oxygenated copper vanadium selenide composite nanostructures as a cathode material for zinc-ion batteries with high stability up to 10 000 cycles
    D. Narsimulu, B. N. Vamsi Krishna, R. Shanthappa, Jae Su Yu
    Nanoscale, 2023
  • Preparation and characterization of acid-treated multiwalled carbon nanotubes interlinked nickel vanadate microcomposites for lithium-ion batteries
    Hari Bandi, Ashok Kumar Kakarla, D. Narsimulu, R. Shanthappa, Jae Su Yu
    International Journal of Energy Research, 2022
  • Nitrogen-doped reduced graphene oxide incorporated Ni2O3-Co3O4@MoS2 hollow nanocubes for high-performance energy storage devices
    D. Narsimulu, Ashok Kumar Kakarla, B.N. Vamsi Krishna, R. Shanthappa, Jae Su Yu
    Journal of Alloys and Compounds, 2022
  • Structural and electrochemical properties of mesoporous FeVO4 as a negative electrode for lithium-ion battery
    Ashok Kumar Kakarla, D. Narsimulu, Harishkumar Reddy Patnam, R. Shanthappa, Jae Su Yu
    International Journal of Energy Research, 2022
  • Nitrogen-doped reduced graphene oxide incorporated porous rod-like cobalt molybdate as an anode for high-capacity long-life lithium-ion batteries
    R. Shanthappa, D. Narsimulu, Ashok Kumar Kakarla, Jae Su Yu
    International Journal of Energy Research, 2021

RECENT SCHOLAR PUBLICATIONS

  • Eco-friendly synthesis of hierarchical heterostructured CsV 3 O 8 /V 2 O 5 composite cathode: lattice stabilization and vanadium dissolution resistance for long-life …
    H Bandi, R Shanthappa, S Vallem, DI Stroe, JS Yu
    Advanced Composites and Hybrid Materials , 2026
    2026
    Citations: 1
  • Eco-friendly synthesis of hierarchical heterostructured CsV
    H Bandi, R Shanthappa, S Vallem, DI Stroe, JS Yu
    2026
  • A Robust Dual‐layer Interphase with Zincophilic and Anticorrosion Properties for Stabilizing Zn Metal Anodes
    T Wang, Y Xiao, S Xu, W Xiang, S Tang, OR Ankinapalli, AR Mule, ...
    Small 21 (52), e09982 , 2025
    2025
    Citations: 2
  • Effect of ammonia solution on the electrochemical properties of magnesium manganese oxide material for aqueous zinc-ion batteries
    WA Syed, AK Kakarla, H Bandi, R Shanthappa, JS Yu
    Journal of Magnesium and Alloys , 2025
    2025
    Citations: 2
  • Unraveling electrochemical performance of magnesium vanadate-based nanostructures as advanced cathodes for rechargeable aqueous zinc-ion batteries
    R Shanthappa, AK Kakarla, H Bandi, WA Syed, JS Yu
    Journal of Magnesium and Alloys 13 (4), 1660-1670 , 2025
    2025
    Citations: 10
  • Green synthesis and interface engineering of CoMoO4–Ag heterostructures: Enhanced electrochemical performance for lithium-ion batteries
    H Bandi, R Dahule, AK Kakarla, R Maezono, D Narsimulu, SW Akram, ...
    Chemical Engineering Journal 508, 160748 , 2025
    2025
    Citations: 19
  • Nickel Vanadate Cathode Induced In Situ Phase Transition for Improved Zinc Storage by Low Migration Barrier and Zn 2+ /H + Co‐Insertion Mechanism
    H Bandi, AK Kakarla, R Dahule, R Maezono, D Narsimulu, R Shanthappa, ...
    Small 21 (2), 2408568 , 2025
    2025
    Citations: 21
  • Unraveling Energy Storage Performance and Mechanism of Metal–Organic Framework‐Derived Copper Vanadium Oxides with Tunable Composition for Aqueous Zinc‐Ion Batteries
    AK Kakarla, H Bandi, WA Syed, D Narsimulu, R Shanthappa, JS Yu
    Small Methods 9 (1), 2400819 , 2025
    2025
    Citations: 17
  • Facile synthesis of cobalt vanadate as high-capacity and durable anode material for lithium-ion batteries
    D Narsimulu, BN Rao, JU Bhanu, R Shanthappa, H Bandi, JS Yu
    Journal of Energy Storage 101, 113925 , 2024
    2024
    Citations: 5
  • Copper substituted manganese Prussian blue analogue composite nanostructures for efficient aqueous zinc-ion batteries
    WA Syed, AK Kakarla, H Bandi, R Shanthappa, JS Yu
    Journal of Energy Storage 99, 113325 , 2024
    2024
    Citations: 29
  • Structural engineering of potassium vanadate cathode by pre-intercalated Mg2+ for high-performance and durable rechargeable aqueous zinc-ion batteries
    AK Kakarla, H Bandi, WA Syed, R Shanthappa, JS Yu
    Journal of Magnesium and Alloys 12 (9), 3780-3793 , 2024
    2024
    Citations: 17
  • Polyaniline layered N-doped carbon-coated iron oxide nanocapsules for extremely active Li-ion battery anode and oxygen evolution reaction
    AK Kakarla, H Bandi, R Shanthappa, WA Syed, T Wang, JS Yu
    Carbon 228, 119308 , 2024
    2024
    Citations: 25
  • Hydrogen Peroxide Tuned Morphology and Crystal Structure of Barium Vanadate‐Based Nanostructures for Aqueous Zinc‐Ion Storage Properties
    R Shanthappa, AK Kakarla, D Narsimulu, H Bandi, WA Syed, T Wang, ...
    Small Methods 8 (8), 2301398 , 2024
    2024
    Citations: 8
  • Improved rate and cycling capability of V2O5@ MoS2 nanocomposites as an advanced cathode material for rechargeable aqueous zinc-ion batteries
    WA Syed, AK Kakarla, H Bandi, R Shanthappa, JS Yu
    Sustainable Materials and Technologies 40, e00968 , 2024
    2024
    Citations: 13
  • MgV3O8 incorporated carbon nanofibers as anode material for high-performance lithium-ion batteries
    R Shanthappa, D Narsimulu, AK Kakarla, JS Yu
    Journal of Alloys and Compounds 971, 172606 , 2024
    2024
    Citations: 9
  • Selenium incorporated sodium vanadate nanobelts as high-performance electrode material for long-lasting aqueous zinc-ion batteries and supercapacitors
    R Shanthappa, OR Ankinapalli, AK Kakarla, D Narsimulu, H Bandi, ...
    Chemical Engineering Journal 476, 146777 , 2023
    2023
    Citations: 22
  • Facile synthesis of N-doped reduced graphene oxide matrix-covered porous Fe2VO4 hybrid composite nanostructures as anode material for lithium-ion batteries
    AK Kakarla, D Narsimulu, H Bandi, R Shanthappa, JS Yu
    Journal of Alloys and Compounds 960, 170784 , 2023
    2023
    Citations: 9
  • Multifunctional hexagonal-shaped zinc vanadate nanostructures for lithium-ion battery and NH3 gas sensor applications
    H Bandi, AK Kakarla, KS Pasupuleti, R Shanthappa, PP Waifalkar, ...
    Materials Today Chemistry 33, 101689 , 2023
    2023
    Citations: 30
  • High‐capacity and long‐life manganese vanadium oxide composite as a cathode for aqueous zinc‐ion batteries
    D Narsimulu, BNV Krishna, R Shanthappa, H Bandi, JS Yu
    Advanced Materials Technologies 8 (18), 2300484 , 2023
    2023
    Citations: 26
  • High-capacity calcium vanadate composite with long-term cyclability as a cathode material for aqueous zinc-ion batteries
    D Narsimulu, R Shanthappa, H Bandi, JS Yu
    ACS Sustainable Chemistry & Engineering 11 (34), 12571-12582 , 2023
    2023
    Citations: 26

MOST CITED SCHOLAR PUBLICATIONS

  • Rational design of MXene-MoS2 heterostructure with rapid ion transport rate as an advanced anode for sodium-ion batteries
    T Wang, K Yao, Y Hua, EG Shankar, R Shanthappa, JS Yu
    Chemical Engineering Journal 457, 141363 , 2023
    2023
    Citations: 132
  • Carbon‐shielded selenium‐rich trimetallic selenides as advanced electrode material for durable Li‐ion batteries and supercapacitors
    AK Kakarla, H Bandi, R Shanthappa, JS Yu
    Small Methods 7 (3), 2201315 , 2023
    2023
    Citations: 38
  • Multifunctional hexagonal-shaped zinc vanadate nanostructures for lithium-ion battery and NH3 gas sensor applications
    H Bandi, AK Kakarla, KS Pasupuleti, R Shanthappa, PP Waifalkar, ...
    Materials Today Chemistry 33, 101689 , 2023
    2023
    Citations: 30
  • Copper substituted manganese Prussian blue analogue composite nanostructures for efficient aqueous zinc-ion batteries
    WA Syed, AK Kakarla, H Bandi, R Shanthappa, JS Yu
    Journal of Energy Storage 99, 113325 , 2024
    2024
    Citations: 29
  • High‐capacity and long‐life manganese vanadium oxide composite as a cathode for aqueous zinc‐ion batteries
    D Narsimulu, BNV Krishna, R Shanthappa, H Bandi, JS Yu
    Advanced Materials Technologies 8 (18), 2300484 , 2023
    2023
    Citations: 26
  • High-capacity calcium vanadate composite with long-term cyclability as a cathode material for aqueous zinc-ion batteries
    D Narsimulu, R Shanthappa, H Bandi, JS Yu
    ACS Sustainable Chemistry & Engineering 11 (34), 12571-12582 , 2023
    2023
    Citations: 26
  • Polyaniline layered N-doped carbon-coated iron oxide nanocapsules for extremely active Li-ion battery anode and oxygen evolution reaction
    AK Kakarla, H Bandi, R Shanthappa, WA Syed, T Wang, JS Yu
    Carbon 228, 119308 , 2024
    2024
    Citations: 25
  • Selenium incorporated sodium vanadate nanobelts as high-performance electrode material for long-lasting aqueous zinc-ion batteries and supercapacitors
    R Shanthappa, OR Ankinapalli, AK Kakarla, D Narsimulu, H Bandi, ...
    Chemical Engineering Journal 476, 146777 , 2023
    2023
    Citations: 22
  • Nickel Vanadate Cathode Induced In Situ Phase Transition for Improved Zinc Storage by Low Migration Barrier and Zn 2+ /H + Co‐Insertion Mechanism
    H Bandi, AK Kakarla, R Dahule, R Maezono, D Narsimulu, R Shanthappa, ...
    Small 21 (2), 2408568 , 2025
    2025
    Citations: 21
  • Green synthesis and interface engineering of CoMoO4–Ag heterostructures: Enhanced electrochemical performance for lithium-ion batteries
    H Bandi, R Dahule, AK Kakarla, R Maezono, D Narsimulu, SW Akram, ...
    Chemical Engineering Journal 508, 160748 , 2025
    2025
    Citations: 19
  • Two-dimensional porous β-Co (OH) 2 and Co3O4 hexagonal nanoplates as stable and high-performance anode for lithium-ion batteries
    D Narsimulu, R Shanthappa, AK Kakarla, BNV Krishna, H Bandi, JS Yu
    Journal of Alloys and Compounds 933, 167618 , 2023
    2023
    Citations: 19
  • Nitrogen-doped reduced graphene oxide incorporated Ni2O3-Co3O4@ MoS2 hollow nanocubes for high-performance energy storage devices
    D Narsimulu, AK Kakarla, BNV Krishna, R Shanthappa, JS Yu
    Journal of Alloys and Compounds 922, 166131 , 2022
    2022
    Citations: 19
  • Oxygenated copper vanadium selenide composite nanostructures as a cathode material for zinc-ion batteries with high stability up to 10000 cycles
    D Narsimulu, BNV Krishna, R Shanthappa, JS Yu
    Nanoscale 15 (8), 3978-3990 , 2023
    2023
    Citations: 18
  • Unraveling Energy Storage Performance and Mechanism of Metal–Organic Framework‐Derived Copper Vanadium Oxides with Tunable Composition for Aqueous Zinc‐Ion Batteries
    AK Kakarla, H Bandi, WA Syed, D Narsimulu, R Shanthappa, JS Yu
    Small Methods 9 (1), 2400819 , 2025
    2025
    Citations: 17
  • Structural engineering of potassium vanadate cathode by pre-intercalated Mg2+ for high-performance and durable rechargeable aqueous zinc-ion batteries
    AK Kakarla, H Bandi, WA Syed, R Shanthappa, JS Yu
    Journal of Magnesium and Alloys 12 (9), 3780-3793 , 2024
    2024
    Citations: 17
  • Preparation and characterization of acid‐treated multiwalled carbon nanotubes interlinked nickel vanadate microcomposites for lithium‐ion batteries
    H Bandi, AK Kakarla, D Narsimulu, R Shanthappa, JS Yu
    International Journal of Energy Research 46 (15), 23796-23807 , 2022
    2022
    Citations: 16
  • Structural and electrochemical properties of mesoporous FeVO 4 as a negative electrode for lithium‐ion battery
    AK Kakarla, D Narsimulu, HR Patnam, R Shanthappa, JS Yu
    International Journal of Energy Research 46 (10), 13590-13601 , 2022
    2022
    Citations: 16
  • Nitrogen‐doped reduced graphene oxide incorporated porous rod‐like cobalt molybdate as an anode for high‐capacity long‐life lithium‐ion batteries
    R Shanthappa, D Narsimulu, AK Kakarla, JS Yu
    International Journal of Energy Research 45 (13), 19509-19520 , 2021
    2021
    Citations: 16
  • Multi-walled carbon nanotubes interlinked vanadium selenite nanocomposites as a positive electrode for high-performance aqueous zinc-ion batteries
    R Shanthappa, AK Kakarla, D Narsimulu, H Bandi, JS Yu
    Journal of Alloys and Compounds 935, 168102 , 2023
    2023
    Citations: 14
  • Improved rate and cycling capability of V2O5@ MoS2 nanocomposites as an advanced cathode material for rechargeable aqueous zinc-ion batteries
    WA Syed, AK Kakarla, H Bandi, R Shanthappa, JS Yu
    Sustainable Materials and Technologies 40, e00968 , 2024
    2024
    Citations: 13