Thermophysical characterization and chemical stability of Ag2O-enhanced eutectic nano-PCMs for moderate-temperature applications Rahul Agrawal, Ravi Kumar Sharma, Kamal Sharma, Md Irfanul Haque Siddiqui International Journal of Chemical Reactor Engineering, 2025 Thermal energy storage utilizing phase change materials (PCMs) is important for conserving energy because of its high latent heat capacity and ability to maintain a steady temperature during the phase change. However, no single organic PCM provides all of the required qualities, such as ideal melting temperature and latent heat, to perform effectively under specified environmental circumstances. To address this, binary eutectic PCMs are prepared by mixing two or more organic PCMs and optimizing their thermophysical properties. Despite these advancements, their low thermal conductivity remains an issue, limiting overall performance. This study focuses on developing nano-enhanced eutectic phase change material consisting of 64 wt% myristic acid and 36 wt% stearic acid, further improved by incorporating Ag2O nanoparticles at concentrations of 0.3–3.0 wt%. Dispersion of nanoparticles within composite phase change material was testified by FTIR and XRD analyses. However, thermal conductivity of the eutectic PCM was significantly enhanced up to 105 % at an equivalent loading of 3.0 wt% nanoparticles. Thermal aging tests also showed thermochemical stability for both pure and composite PCMs in the case of 1,000 cycles. This paper concludes that nano-embedded eutectic PCM may be a potentially well-suited material for medium- and low-temperature applications.
Development of a nano-engineered form-stable phase transition material by valorization of spent coffee for thermal energy storage D Gowthami, AK Ansu, RK Sharma, A Sari, VV Tyagi Biomass and Bioenergy 205, 108550 , 2026 2026 Citations: 1
Advancement in solar desalination with system innovations, nanomaterials integration, and artificial intelligence applications for sustainability M Sharma, VV Tyagi, K Chopra, A Saxena, RK Rajamony, R Kothari, ... Separation and Purification Technology, 135891 , 2025 2025 Citations: 7
Expanded graphite enhanced cellulose aerogel/palmityl alcohol composite phase change material with effective thermal energy storage properties TB Erol, A Sarı, A Can, M Kaya, RK Sharma, O Gencel, VV Tyagi Journal of Energy Storage 132, 117892 , 2025 2025 Citations: 7
Development and experimental investigations on pebbles and erythritol-based energy storage unit for indoor solar cooking: R. Khatri et al. R Khatri, R Goyal, RK Sharma Clean Technologies and Environmental Policy 27 (10), 5271-5285 , 2025 2025 Citations: 1
Experimental and simulation study of lightweight roof with thermal energy storage for energy-efficient building envelope PKS Rathore, A Aleem, BS Sikarwar, RK Sharma, R Kumar, NK Gupta Thermal Science and Engineering Progress, 104128 , 2025 2025 Citations: 7
Thermophysical characterization and chemical stability of Ag2O-enhanced eutectic nano-PCMs for moderate-temperature applications R Agrawal, RK Sharma, K Sharma, MIH Siddiqui International Journal of Chemical Reactor Engineering 23 (9), 1143-1155 , 2025 2025 Citations: 1
Valorization of waste biomass derived activated carbon@ expanded graphite for intensification of thermal characteristics of RT24 phase change material through shape-stabilization D Gowthami, RK Sharma, T Kar, A Sarı, H Arslanoğlu, S Eren, O Gencel Journal of Energy Storage 119, 116370 , 2025 2025 Citations: 9
Oxide-Based Nano-ceramic Materials for Hydrogen Evolution Reactions: Mechanisms, Electrochemical Parameters, Material Types, and Synthesis Methods MM Khan, MA Mansoor, M Iqbal, RK Sharma Nanofluids and Nano Composites for Energy Systems, 37-69 , 2025 2025 Citations: 2
Introduction to Nanofluid and Hybrid Nanofluid RK Sharma, D Tripathi Nanofluids and Nano Composites for Energy Systems, 1-20 , 2025 2025
Application of Nanofluids in Heat Transfer Augmentation Within the Heat Exchangers A Srivastava, RK Sharma, S Ishwar Nanofluids and Nano Composites for Energy Systems, 21-35 , 2025 2025
Nanofluids and Nano Composites for Energy Systems D Tripathi, RK Sharma, PG Siddheshwar, KS Mekheimer Springer , 2025 2025 Citations: 1
Enhancing Surface Properties of Circular Carbon Biochar Derived from Spent Coffee Beans Through ZnCl2/KOH Activation G D, RK Sharma, M Khalid, MY Ismail BioEnergy Research 18 (1), 2 , 2024 2024 Citations: 9
Mediums in Solar Cooking Applications R Khatri, R Goyal, RK Sharma Proceedings of the 10th International Conference on Mechanical, Automotive … , 2024 2024
A novel overflow channel design of manifold cold plate for lithium-ion battery: A CFD study H Zhang, P Ganesan, RK Sharma, MNBM Zubir, IA Badruddin, WT Chong Process Safety and Environmental Protection 189, 648-663 , 2024 2024 Citations: 16
Experimental analysis of thermal energy efficient clay brick incorporated with phase change material and insulation PKS Rathore, B Patel, MK Gupta, BS Sikarwar, RK Sharma Process Safety and Environmental Protection 190 (B), 529-541 , 2024 2024 Citations: 27
Analysis of form stable phase transition materials for thermal energy storage system P Singh, AK Ansu, D Gowthami, RK Sharma 2024 3rd International Conference on Computational Modelling, Simulation and … , 2024 2024
Evaluation of carbonized Cotton stalk for development of novel form stable composite phase change materials for solar thermal energy storage D Gowthami, RK Sharma, AK Ansu, A Sarı, VV Tyagi, PKS Rathore Process Safety and Environmental Protection 188, 1037-1048 , 2024 2024 Citations: 36
Thermal performance enhancement of lauric acid using nanomaterials as composite phase change material H Santhanam, HM Ali, RK Sharma Environmental Science and Pollution Research 31 (27), 38618-38627 , 2024 2024 Citations: 11
Advances in phase change materials, heat transfer enhancement techniques, and their applications in thermal energy storage: a comprehensive review ZL Yang, R Walvekar, WP Wong, RK Sharma, S Dharaskar, M Khalid Journal of Energy Storage 87, 111329 , 2024 2024 Citations: 224
Optimization of Pome Biodiesel with Isobutanol Additive to Cater Un Sustainable Development Goal on Affordable and Clean Energy NH BADRULHISAM, MY Ismail, AA Abdullah, W Sawangsri, OI Awad, ... Thermal Science and Engineering Progress 51, 102618 , 2024 2024 Citations: 7
MOST CITED SCHOLAR PUBLICATIONS
Developments in organic solid–liquid phase change materials and their applications in thermal energy storage RK Sharma, P Ganesan, VV Tyagi, HSC Metselaar, SC Sandaran Energy conversion and management 95, 193-228 , 2015 2015 Citations: 929
A comprehensive review on development of eutectic organic phase change materials and their composites for low and medium range thermal energy storage applications P Singh, RK Sharma, AK Ansu, R Goyal, A Sarı, VV Tyagi Solar Energy Materials and Solar Cells 223, 110955 , 2021 2021 Citations: 352
A comprehensive review on phase change materials for heat storage applications: Development, characterization, thermal and chemical stability VV Tyagi, K Chopra, RK Sharma, AK Pandey, SK Tyagi, MS Ahmad, ... Solar Energy Materials and Solar Cells 234, 111392 , 2022 2022 Citations: 290
Thermal properties and heat storage analysis of palmitic acid-TiO2 composite as nano-enhanced organic phase change material (NEOPCM) RK Sharma, P Ganesan, VV Tyagi, HSC Metselaar, SC Sandaran Applied Thermal Engineering , 2016 2016 Citations: 283
Advances in phase change materials, heat transfer enhancement techniques, and their applications in thermal energy storage: a comprehensive review ZL Yang, R Walvekar, WP Wong, RK Sharma, S Dharaskar, M Khalid Journal of Energy Storage 87, 111329 , 2024 2024 Citations: 224
Walnut shell derived bio-carbon/methyl palmitate as novel composite phase change material with enhanced thermal energy storage properties G Hekimoğlu, A Sarı, T Kar, S Keleş, K Kaygusuz, VV Tyagi, RK Sharma, ... Journal of Energy Storage 35, 102288 , 2021 2021 Citations: 187
Silica fume/capric acid-stearic acid PCM included-cementitious composite for thermal controlling of buildings: Thermal energy storage and mechanical properties G Hekimoğlu, M Nas, M Ouikhalfan, A Sarı, VV Tyagi, RK Sharma, ... Energy 219, 119588 , 2021 2021 Citations: 140
Preparation, characterization, thermal energy storage properties and temperature control performance of form-stabilized sepiolite based composite phase change materials A Sarı, RK Sharma, G Hekimoğlu, VV Tyagi Energy and Buildings 188, 111-119 , 2019 2019 Citations: 117
Microencapsulated heptadecane with calcium carbonate as thermal conductivity-enhanced phase change material for thermal energy storage A Sarı, TA Saleh, G Hekimoğlu, VV Tyagi, RK Sharma Journal of Molecular Liquids 328, 115508 , 2021 2021 Citations: 115
Thermal management performance and mechanical properties of a novel cementitious composite containing fly ash/lauric acid-myristic acid as form-stable phase change material G Hekimoğlu, M Nas, M Ouikhalfan, A Sarı, Ş Kurbetci, VV Tyagi, ... Construction and Building Materials 274, 122105 , 2021 2021 Citations: 111
Capric-stearic acid mixture impregnated carbonized waste sugar beet pulp as leak-resistive composite phase change material with effective thermal conductivity and thermal … A Sarı, G Hekimoğlu, Y Karabayır, RK Sharma, H Arslanoğlu, O Gencel, ... Energy 247, 123501 , 2022 2022 Citations: 104
Long-term thermal and chemical reliability study of different organic phase change materials for thermal energy storage applications RK Sharma, P Ganesan, VV Tyagi Journal of Thermal Analysis and Calorimetry, 1-10 , 2016 2016 Citations: 101
Integration of lauric acid/zeolite/graphite as shape stabilized composite phase change material in gypsum for enhanced thermal energy storage in buildings N Kumar, PKS Rathore, RK Sharma, NK Gupta Applied Thermal Engineering 224, 120088 , 2023 2023 Citations: 99
Evaluation of carbon based-supporting materials for developing form-stable organic phase change materials for thermal energy storage: A review P Singh, RK Sharma, M Khalid, R Goyal, A Sarı, VV Tyagi Solar Energy Materials and Solar Cells 246, 111896 , 2022 2022 Citations: 97
Advances in the developments of solar cooker for sustainable development: A comprehensive review R Khatri, R Goyal, RK Sharma Renewable and Sustainable Energy Reviews 145, 111166 , 2021 2021 Citations: 97
Numerical study for enhancement of solidification of phase change materials using trapezoidal cavity RK Sharma, P Ganesan, JN Sahu, HSC Metselaar, TMI Mahlia Powder technology 268, 38-47 , 2014 2014 Citations: 92
Accelerated thermal cycle and chemical stability testing of polyethylene glycol (PEG) 6000 for solar thermal energy storage RK Sharma, P Ganesan, VV Tyagi, TMI Mahlia Solar Energy Materials and Solar Cells 147, 235-239 , 2016 2016 Citations: 87
Computational study of heat transfer enhancement using porous foams with phase change materials: A comparative review E Hamidi, PB Ganesan, RK Sharma, KW Yong Renewable and Sustainable Energy Reviews 176, 113196 , 2023 2023 Citations: 85
Analysis of double diffusive convection in electroosmosis regulated peristaltic transport of nanofluids A Sharma, D Tripathi, RK Sharma, AK Tiwari Physica A: Statistical Mechanics and its Applications 535, 122148 , 2019 2019 Citations: 85
Beeswax as a potential replacement of paraffin wax as shape stabilized solar thermal energy storage material: An experimental study PKS Rathore, KK Gupta, B Patel, RK Sharma, NK Gupta Journal of Energy Storage 68, 107714 , 2023 2023 Citations: 83
GRANT DETAILS
1. USD 3400.00
• Principal Investigator, Endowment fund of Manipal University Jaipur, - Development of
High Thermal Conductive Organic Phase Change materials for Thermal Energy
Storage, 2017, Duration 2 years.
2. EURO 75496.00
• Co-PI, ERASMUS +, titled “APPLY Project” for computational Fluid Dynamics. 2020-
2023.