Arpan Kumar Nayak
@scholar.google.com
Research Professor
Konkuk University
RESEARCH INTERESTS
Nanostructured Materials
Energy storage devices
Electrolyzers
Zn-air Battery
Photocatalysis
Water splitting
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Musfique Salehin Shruti, Ananta Sasmal, Han HyukSu, and Arpan Kumar Nayak
Elsevier BV
Mohammed Jalalah, HyukSu Han, Arpan Kumar Nayak, and Farid A. Harraz
Springer Science and Business Media LLC
Mopidevi Manikanta Kumar, C. Aparna, Amit Kumar Nayak, Umesh V. Waghmare, Debabrata Pradhan, and C. Retna Raj
American Chemical Society (ACS)
The transition metal phosphide (TMP)-based functional electrocatalysts are very promising for the development of electrochemical energy conversion and storage devices including rechargeable metal-air batteries and water electrolyzer. Tuning the electrocatalytic activity of TMPs is one of the vital steps to achieve the desired performance of these energy devices. Herein, we demonstrate the modulation of the bifunctional oxygen electrocatalytic activity of nitrogen-doped carbon-encapsulated CoP (CoP@NC) nanostructures by surface tailoring with ultralow amount (0.56 atomic %) of Ru nanoparticles (2.5 nm). The CoP at the core and the Ru nanoparticles on the shell have a facile charge transfer interaction with the encapsulating NC. The strong coupling of Ru with CoP@NC boosts the electrocatalytic performance toward oxygen reduction (ORR), oxygen evolution (OER), and hydrogen evolution (HER) reactions. The surface-tailored catalyst requires only 35 mV to deliver the benchmark current density of 10 mA·cm-2 for HER. A small potential gap of 620 mV between ORR and OER is achieved, making the catalyst highly suitable for the development of rechargeable zinc-air batteries (ZABs). The homemade ZAB delivers a specific capacity of 780 mA·hgZn-1 and peak power density of 175 mW·cm-2 with a very small voltaic efficiency loss (1.1%) after 300 cycles. The two-electrode water splitting cell (CoP@NC-Ru||CoP@NC-Ru) delivers remarkably low cell voltage of 1.47 V at the benchmark current density. Stable current density of 25 mA·cm-2 for 25 h without any significant change is achieved. Theoretical studies support the charge transfer interaction-induced enhanced electrocatalytic activity of the surface-tailored nanostructure.
Jyotsna Chaturvedi, Akkarakkaran Thayyil Muhammed Munthasir, Arpan Kumar Nayak, Laxmi Narayan Tripathi, Pakkirisamy Thilagar, and Balaji R. Jagirdar
Wiley
AbstractCdS‐based materials are extensively studied for photocatalytic water splitting. By incorporating Ag+ into CdS nanomaterials, the catalyst's charge carrier dynamic can be tuned for photo‐electrochemical devices. However, photo‐corrosion and air‐stability of the heterostructures limit the photocatalytic device's performance. Here, a one‐pot, single molecular source synthesis of the air‐stable AgCdS ternary semiconductor alloy nanostructures by heat‐up method is reported. Monoclinic and hexagonal phases of the alloy are tuned by judicious choice of dodecane thiol (DDT), octadecyl amine (ODA), and oleyl amine (OLA) as capping agents. Transmission electron microscope (TEM) and powder X‐ray diffraction characterization of the AgCdS alloy confirm the monoclinic and hexagonal phase (wurtzite) formation. The high‐resolution TEM studies confirm the formation of AgCdS@DDT alloy nanorods and their shape transformation into nano‐triangles. The nanoparticle coalescence is observed for ODA‐capped alloys in the wurtzite phase. Moreover, OLA directs mixed crystal phases and anisotropic growth of alloy. Optical processes in AgCdS@DDT nano‐triangles show mono‐exponential decay (3.97 ± 0.01 ns). The monoclinic phase of the AgCdS@DDT nanorods exhibits higher electrochemical hydrogen evolution activity in neutral media as compared to the AgCdS@ODA/OLA alloy nanocrystals. DDT and OLA‐capped alloys display current densities of 14.1 and 14.7 mA cm−2, respectively, at 0.8 V (vs RHE).
Shri Hari S. Pai, Sarvesh Kumar Pandey, E. James Jebaseelan Samuel, Jin Uk Jang, Arpan Kumar Nayak, and HyukSu Han
Elsevier BV
Pampa Jhariat, Arjun Warrier, Ananta Sasmal, Subhadip Das, Shafeeq Sarfudeen, Priyanka Kumari, Arpan Kumar Nayak, and Tamas Panda
Royal Society of Chemistry (RSC)
Four redox active viologen-based ionic covalent organic networks (vCONs) were synthesized by the solvothermal-assisted Zincke reaction which are directly used as metal-free bifunctional electrocatalysts for ORR and OER applications.
Enkhtuvshin Enkhbayar, Ashish Gaur, Jin Uk Jang, Arpan Kumar Nayak, Kyeong‐Han Na, Won‐Youl Choi, and HyukSu Han
Wiley
AbstractOver the past decades, tremendous effort has been made to enhance the water‐splitting via fabricating eco‐friendly electrocatalyst with increased conductivity, and large number of accessible active sites in lab scale. However, the development of earth abundant efficient electrocatalyst with superior activity for ‐seawater‐splitting remains a great challenge for the researchers. In this regard, self‐supported catalysts are found to be the most promising candidates, they have the features of increased loading, superior adhesion, rapid mass and charge transfer, and easy wettability for large scale hydrogen production via electrochemical seawater splitting. This review investigates different fabrication processes for the self‐supported catalyst, emphasizing their distinct characteristics that contribute to improved activity. Furthermore, we provided a detailed elucidation of the procedure and characteristics of seawater splitting, emphasizing the most recent progress in the creation of self‐supportive catalyst for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and bifunctional activity. We have also examined the current barriers and potential prospects for advancing the utilization of self‐supported catalysts in the process of seawater splitting.
Nguyen Thi Thu Thao, Jin Uk Jang, Arpan Kumar Nayak, and HyukSu Han
Wiley
The proton exchange membrane water electrolysis (PEMWE) powered by renewable electricity offers a facile route for clean hydrogen production. The oxygen evolution reaction (OER) at the anode plays a major role in affecting the overall device efficiency due to its sluggish OER kinetics. Thus, it remains a challenge to develop robust and active catalysts for OER in acid media for efficient PEMWE. Currently, iridium (Ir)‐based materials, such as mono‐ and multimetallic Ir, Ir‐based oxides, pyrochlore iridate oxides, and Ir‐based perovskites, are the most promising OER catalysts in acid media for PEMWEs. Extensive research has been conducted to enhance the specific activity of Ir species to make cost‐effective. The present review aims to provide the recent progress on addressing the long‐term durability issue of Ir‐based catalyst for OER in acidic conditions, aspiring to inspire the researchers to design highly efficient and stable Ir‐based catalysts. Moreover, the detailed OER mechanism along with the dissolution nature of Ir species is discussed and summarized. Finally, the status, challenges, and prospects for the development of Ir‐based OER catalysts are discussed.
HyukSu Han, Jin Uk Jang, Dongjo Oh, Kyeong-Han Na, Won-Youl Choi, Neelima Jayakrishnan, and Arpan Kumar Nayak
American Chemical Society (ACS)
HyukSu Han, So Jung Kim, Sun Young Jung, Dongjo Oh, Arpan Kumar Nayak, Jin Uk Jang, Junghwan Bang, Sunghwan Yeo, and Tae Ho Shin
Wiley
AbstractDevelopment of highly efficient and robust electrocatalysts for oxygen evolution reaction (OER) under specific electrolyte is a key to actualize commercial low‐temperature water electrolyzers. Herein, a rational catalyst design strategy is first reported based on amorphous–crystalline (a–c) interfacial engineering to achieve high catalytic activity and durability under diverse electrolytes that can be used for all types of low‐temperature water electrolysis. Abundant a–c interface (ACI) is implemented into a hollow nanocubic (pre)‐electrocatalyst which is derived from Ir‐doped Ni–Fe–Zn Prussian blue analogues (PBA). The implemented c–a interface is well maintained during prolonged OER in alkaline, alkalized saline, and acidic electrolytes demonstrating its diverse functionality for water electrolysis. Notably, the final catalyst exhibits superior catalytic activity with excellent durability for OER compared to that of benchmark IrO2 catalyst, regardless of chemical environment of electrolytes. Hence, this work can be an instructive guidance for developing the ACI engineered electroctalyst which can be diversely used for different types of low‐temperature electrolyzers.
Musfique Salehin Shruti, Santimoy Khilari, E. James Jebaseelan Samuel, HyukSu Han, and Arpan Kumar Nayak
Elsevier BV
Sun Young Jung, Kang Min Kim, Jeong Ho Ryu, Sunghwan Yeo, Hyelin Jeon, Arpan Kumar Nayak, Nguyen Thi Thu Thao, Enkhbayar Enkhtuvshin, So Jung Kim, Jin Uk Jang,et al.
Elsevier BV
Sun Young Jung, Kang Min Kim, Jeong Ho Ryu, Sunghwan Yeo, Hyelin Jeon, Arpan Kumar Nayak, Nguyen Thi Thu Thao, Enkhbayar Enkhtuvshin, So Jung Kim, Jin Uk Jang,et al.
Elsevier BV
Nguyen Thi Thu Thao, Kwangsoo Kim, Jeong Ho Ryu, Byeong‐Seon An, Arpan Kumar Nayak, Jin Uk Jang, Kyeong‐Han Na, Won‐Youl Choi, Ghulam Ali, Keun Hwa Chae,et al.
Wiley
Oxygen evolution reaction (OER) under acidic conditions becomes of significant importance for the practical use of a proton exchange membrane (PEM) water electrolyzer. In particular, maximizing the mass activity of iridium (Ir) is one of the maiden issues. Herein, the authors discover that the Ir-doped calcium copper titanate (CaCu₃Ti₄O₁₂, CCTO) perovskite exhibits ultrahigh mass activity up to 1000 A gIr -1 for the acidic OER, which is 66 times higher than that of the benchmark catalyst, IrO2 . By substituting Ti with Ir in CCTO, metal-oxygen (M-O) covalency can be significantly increased leading to the reduced energy barrier for charge transfer. Further, highly polarizable CCTO perovskite referred to as "colossal dielectric", possesses low defect formation energy for oxygen vacancy inducing a high number of oxygen vacancies in Ir-doped CCTO (Ir-CCTO). Electron transfer occurs from the oxygen vacancies and Ti to the substituted Ir consequentially resulting in the electron-rich Ir and -deficient Ti sites. Thus, favorable adsorptions of oxygen intermediates can take place at Ti sites while the Ir ensures efficient charge supplies during OER, taking a top position of the volcano plot. Simultaneously, the introduced Ir dopants form nanoclusters at the surface of Ir-CCTO, which can boost catalytic activity for the acidic OER.
Mohammed Jalalah, HyukSu Han, Arpan Kumar Nayak, and Farid A. Harraz
Elsevier BV
Enkhbayar Enkhtuvshin, Sunghwan Yeo, Hyojeong Choi, Kang Min Kim, Byeong‐Seon An, Swarup Biswas, Yongju Lee, Arpan Kumar Nayak, Jin Uk Jang, Kyeong‐Han Na,et al.
Wiley
Rishika Chakraborty, Sutanu Das, Siddheswar Rudra, Arpan Kumar Nayak, Pradip K. Maji, Upendranath Nandi, and Mukul Pradhan
Royal Society of Chemistry (RSC)
A novel Bi2Se3–AgMnOOH nanocomposite is prepared via low-temperature solution-phase synthesis. The electrical transport properties are systematically examined and highlighted for both Ohmic and non-Ohmic regions.
Mohammed Jalalah, HyukSu Han, Milan Mahadani, Arpan Kumar Nayak, and Farid A. Harraz
Elsevier BV
Siddheswar Rudra, Sutanu Das, Pradip K. Maji, Arpan Kumar Nayak, Yuichi Negishi, Mukul Pradhan, and Upendranath Nandi
American Chemical Society (ACS)
Mohammed Jalalah, Ananta Sasmal, Arpan Kumar Nayak, and Farid A. Harraz
Elsevier BV
Arpan Kumar Nayak and Ananta Sasmal
Elsevier BV
Ananta Sasmal and Arpan Kumar Nayak
Elsevier BV
Hariventhan Ragupathi, M. Jarvin, S. S. R. Inbanathan, Arpan Kumar Nayak, and Youngson Choe
Royal Society of Chemistry (RSC)
In this study, SnO2–reduced graphene oxide (rGO) nanocomposites (NCs) were synthesized via a hydrothermal method using tea extract as a reducing agent.