Effects of ZnSO₄ and Zn(CF₃SO₃)₂ Electrolytes on HER, Corrosion, Dendrite Formation, and Electrochemical Performance in Aqueous Zn-Ion Batteries Basil Chacko, W. Madhuri Battery Energy, 2026 Aqueous zinc‐ion batteries (AZIBs) have garnered attention as a promising energy storage technology due to its low cost and improved safety. However, their practical application is hindered by challenges such as hydrogen evolution reaction (HER), zinc corrosion, and dendrite formation during repeated Zn plating/stripping cycles, which significantly affect cycling stability and electrochemical performance. Herein, investigations on the impact of ZnSO₄ and Zn(CF 3 SO 3 )₂ electrolytes at varying molar concentrations (1 M, 2 M, and 3 M) on these limiting factors are reported. Our results indicate that higher electrolyte concentrations are more effective in suppressing HER and corrosion while enhancing ionic conductivity. Notably, Zn(CF 3 SO 3 ) 2 demonstrated superior electrochemical performance compared to ZnSO₄, attributed to the bulky CF₃SO₃⁻ anions, which reduce the coordination between Zn²⁺ and water molecules, thereby facilitating faster ion transport. Hydrothermally synthesized α‐MnO₂ was utilized as the cathode in complete cell systems. Electrochemical tests demonstrated that a 3 M Zn(CF 3 SO 3 )₂ electrolyte enabled an impressive initial discharge capacity of 252 mAh g⁻¹. Additionally, the cell exhibited outstanding cycling durability and capacity preservation over repeated cycles. This enhanced electrochemical performance can be attributed to the distinctive characteristics of the Zn(CF 3 SO 3 ) 2 electrolyte, which effectively suppresses harmful side reactions while facilitating superior charge storage and transport processes.
Glass forming ability and critical exponents in Hf-Modified Fe-Zr-B-Cu amorphous alloys for near room temperature magnetocaloric application Anjana Vinod, D. Arvindha Babu, N. V. Rama Rao, M. M. Raja, K. Guruvidyathri, et al. Scientific Reports, 2025 Rare earth free magnetocaloric materials have emerged as a potential candidate for application in magnetic refrigeration presented in this work. A systematic investigation of Hafnium (Hf) substitution effects on the structural, thermal, magnetic, and magnetocaloric properties of rare earth free Fe-Zr-B-Cu alloys, synthesized via arc melting and melt spinning is reported in the present work. Comprehensive characterization using X-ray diffraction, differential scanning calorimetry, and vibrating sample magnetometry reveals enhanced magnetocaloric performance, with magnetic entropy change $$\:(\:-{\varDelta\:S}_{M}^{max})$$ ≈ 1.856 J/kg K, 1.767 J/kg K, full-width at half-maximum ( $$\:{{\Delta\:}T}_{FWHM}$$ ) of 12.59 K, 31.98 K, and relative cooling power $$\:\left(RCP\right)$$ ≈ 23.36 J/kg, 56.50 J/kg under 2.5 T for Fe 88 Zr 3 Hf 4 B 4 Cu 1 ,Fe 88 Zr 1 Hf 6 B 4 Cu 1 alloys respectively. The analysis of critical exponents substantiates the occurrence of a second-order phase transition from paramagnetic to ferromagnetic at $$\:{T}_{C}$$ = 293 K for Fe 88 Zr 3 Hf 4 B 4 Cu 1 alloys and $$\:{T}_{C}$$ = 303 for Fe 88 Zr 1 Hf 6 B 4 Cu 1 alloys, in accordance with the mean-field model and the Widom scaling relation. These findings demonstrate the potential of Hf substitution in optimizing magnetocaloric properties and elucidating critical behavior, paving the way for advanced magnetic refrigeration materials.
Effects of ZnSO₄ and Zn (CF₃SO₃) ₂ Electrolytes on HER, Corrosion, Dendrite Formation, and Electrochemical Performance in Aqueous Zn‐Ion Batteries B Chacko, W Madhuri Battery Energy 5 (1), e70066 , 2026 2026 Citations: 3
Near room temperature magnetocaloric effect in Co: LaFe13− xSix ribbons through melt Spinning: Boosting δTFWHM and Curie temperature A Vinod, DA Babu, W Madhuri Intermetallics 185, 108896 , 2025 2025 Citations: 4
Nanofillers in Energy Industry: Significance in Lithium Ion Batteries B Chacko, CC Parhi, A Vinod, W Madhuri Handbook of Nanofillers, 2773-2789 , 2025 2025
Glass forming ability and critical exponents in Hf-Modified Fe-Zr-B-Cu amorphous alloys for near room temperature magnetocaloric application A Vinod, D Arvindha Babu, NV Rama Rao, MM Raja, K Guruvidyathri, ... Scientific Reports 15 (1), 24223 , 2025 2025 Citations: 3
Correlating critical behaviour and the magnetocaloric effect in Fe–Hf–Zr–B–Cu metallic glasses A Vinod, DA Babu, MR Muthuvel, S Srinath, W Madhuri Materials Advances 6 (24), 9505-9515 , 2025 2025
A sustainable and cost-effective industrial biomass-based coin cell supercapacitor for powering up electronic devices P Yadav, S Patel, G Mahar, W Madhuri, KR Gopal, PA Azeem Journal of Materials Chemistry A 13 (44), 38039-38052 , 2025 2025 Citations: 3
Nanofillers in Energy Industry: Significance of Nanofillers in Lithium Ion Batteries B Chacko, CC Parhi, A Vinod, W Madhuri Handbook of Nanofillers, 1-17 , 2025 2025
Unveiling the magnetic, magnetocaloric and critical behaviour of melt spun lanthanum iron silicon alloys: a comprehensive study A Vinod, DA Babu, W Madhuri Journal of Materials Chemistry C 13 (19), 9673-9684 , 2025 2025 Citations: 1
Critical behaviour and magnetocaloric properties of Fe 88 Zr 5 Hf 2 B 4 Cu 1 metallic glass for near-room temperature magnetic refrigeration application A Vinod, DA Babu, MR Muthuvel, P Ramasamy, W Madhuri Journal of Materials Chemistry C 13 (16), 8228-8237 , 2025 2025 Citations: 2
A comprehensive investigation on the electrochemical performance, synthesis, modification, and recycling methods of LiFePO4 for sustainable future B Chacko, W Madhuri Journal of Energy Storage 98, 112851 , 2024 2024 Citations: 29
Microwave assisted cobalt nickel ferrite as exhaust thrust sensor and EMI shield IS Kapte, S Niyogi, PJ Qureshi, V Khade, TA Babu, W Madhuri Ceramics International 50 (17), 30754-30762 , 2024 2024 Citations: 14
Structural, optical and magnetic properties of MgFe2O4 and Ni0. 5Zn0. 5Fe2O4 A Anagha, A Joshua, B Chacko, TA Babu, S Srigiri, W Madhuri Materials Chemistry and Physics 313, 128746 , 2024 2024 Citations: 30
Carbon Quantum dots doped Chitosan/HPMC nano composites and their Functional, Structural, Morphological, Dielectric and Tensile properties SN Shareef, BP Narasaiah, W Madhuri, K Vagdevi, Ramnarayan E3S Web of Conferences 430, 01149 , 2023 2023 Citations: 2
Structural, morphological, dielectric and tensile properties of BaTiO3-doped PVA/PVP polymer blend nanocomposites W Madhuri Polymer Bulletin 80 (3), 2389-2412 , 2023 2023 Citations: 20
Microwave synthesis technique for LTCC and colossal dielectric constant in PZT TA Babu, W Madhuri Chemical Physics Letters 799, 139641 , 2022 2022 Citations: 13
Structural characteristics of commercially available and self synthesized carbon nanomaterials A Roy, W Madhuri, B Chacko Electrochemical Society Transactions 107 (1), 16199-16211 , 2022 2022 Citations: 1
Bismuth modified zinc ferrites for low-temperature ceramic co-firing technology B Chacko, A Roy, AM Richard, J Swathy, BT Avanish, W Madhuri Materials Chemistry and Physics 276, 125401 , 2022 2022 Citations: 15
A hybrid microwave sintered PZT composite as a flexible piezoelectric nanogenerator TA Babu, W Madhuri RSC advances 12 (53), 34454-34462 , 2022 2022 Citations: 24
Characterization methods used for the identification of ferroelectric beta phase of fluoropolymers K Thiyagarajan, TA Babu, W Madhuri, A Chandrasekhar Engineered Polymer Nanocomposites for Energy Harvesting Applications, 43-64 , 2022 2022 Citations: 7
Effect of Cobalt on Microwave Sintered Pb 1-x Co x Fe 12 O 19 (x=0.25, 0.50 and 0.75) Nanoparticles: Structural and Dielectric Studies S Prathap, W Madhuri Journal of Electronic Materials 50 (12), 7005-7016 , 2021 2021
MOST CITED SCHOLAR PUBLICATIONS
Hydrothermal synthesis of NiFe 2 O 4 nano-particles: structural, morphological, optical, electrical and magnetic properties KC BABU NAIDU, W Madhuri Bulletin of Materials Science 40 (2), 417-425 , 2017 2017 Citations: 134
Microwave processed bulk and nano NiMg ferrites: a comparative study on X-band electromagnetic interference shielding properties KCB Naidu, W Madhuri Materials Chemistry and Physics 187, 164-176 , 2017 2017 Citations: 127
Structural, magnetic and electrical properties of NiCuZn ferrites prepared by microwave sintering method suitable for MLCI applications MP Reddy, G Balakrishnaiah, W Madhuri, MV Ramana, NR Reddy, ... Journal of Physics and Chemistry of Solids 71 (9), 1373-1380 , 2010 2010 Citations: 97
Influence of copper substitution on magnetic and electrical properties of MgCuZn ferrite prepared by microwave sintering method MP Reddy, W Madhuri, NR Reddy, KVS Kumar, VRK Murthy, RR Reddy Materials Science and Engineering: C 30 (8), 1094-1099 , 2010 2010 Citations: 93
Optically active polymer nanocomposite composed of polyaniline, polyacrylonitrile and green-synthesized graphene quantum dot for supercapacitor application D Arthisree, W Madhuri International Journal of Hydrogen Energy 45 (16), 9317-9327 , 2020 2020 Citations: 88
Effect of sintering temperature on structural and magnetic properties of NiCuZn and MgCuZn ferrites MP Reddy, W Madhuri, MV Ramana, NR Reddy, KVS Kumar, VRK Murthy, ... Journal of Magnetism and Magnetic Materials 322 (19), 2819-2823 , 2010 2010 Citations: 82
Studies on the morphology and conductivity of PEO/LiClO4 J Gurusiddappa, W Madhuri, RP Suvarna, KP Dasan Materials Today: Proceedings 3 (6), 1451-1459 , 2016 2016 Citations: 71
Microwave processed NiMgZn ferrites for electromagnetic intereference shielding applications KCB Naidu, SR Kiran, W Madhuri IEEE Transactions on Magnetics 53 (2), 1-7 , 2016 2016 Citations: 69
Microwave assisted solid state reaction method: investigations on electrical and magnetic properties NiMgZn ferrites W Madhuri Materials Chemistry and Physics 181, 432-443 , 2016 2016 Citations: 67
Microwave processed NiMg ferrite: Studies on structural and magnetic properties KCB Naidu, W Madhuri Journal of Magnetism and Magnetic Materials 420, 109-116 , 2016 2016 Citations: 66
Investigations on transport, impedance and electromagnetic interference shielding properties of microwave processed NiMg ferrites S RoopasKiran, W Madhuri Materials Research Bulletin 89, 125-138 , 2017 2017 Citations: 59
Microwave sintering of iron deficient Ni–Cu–Zn ferrites for multilayer chip inductors MP Reddy, W Madhuri, G Balakrishnaiah, NR Reddy, KVS Kumar, ... Current Applied Physics 11 (2), 191-198 , 2011 2011 Citations: 55
Magnetic properties of Ni-Zn ferrites prepared by microwave sintering method MP Reddy, W Madhuri, NR Reddy, KVS Kumar, VRK Murthy, RR Reddy Journal of electroceramics 28 (1), 1-9 , 2012 2012 Citations: 52
Effect of Nonmagnetic Zn 2+ Cations on Initial Permeability of Microwave‐Treated NiMg Ferrites K Chandra Babu Naidu, W Madhuri International Journal of Applied Ceramic Technology 13 (6), 1090-1095 , 2016 2016 Citations: 51
Comparison of initial permeability of MgCuZn ferrites sintered by both conventional and microwave methods W Madhuri, M Penchal Reddy, N Rammanohar Reddy, KV Siva Kumar, ... Journal of Physics D: Applied Physics 42 (16), 165007 , 2009 2009 Citations: 50
Microwave sintering of nickel ferrite nanoparticles processed via sol–gel method M Penchal Reddy, W Madhuri, K Sadhana, IG Kim, KN Hui, KS Hui, ... Journal of sol-gel science and technology 70 (3), 400-404 , 2014 2014 Citations: 46
Multiferroic properties and Mössbauer Study of M-type hexaferrite PbFe12O19 synthesized by the high energy ball milling S Prathap, W Madhuri, SS Meena Materials Characterization 177, 111168 , 2021 2021 Citations: 43
A ternary polymer nanocomposite film composed of green-synthesized graphene quantum dots, polyaniline, polyvinyl butyral and poly (3, 4-ethylenedioxythiophene) polystyrene … D Arthisree, W Madhuri, N Saravanan, B Dinesh, S Saikrithika, AS Kumar Journal of Energy Storage 35, 102333 , 2021 2021 Citations: 39
Conductivity and dielectric behavior of polyethylene oxide-lithium perchlorate solid polymer electrolyte films J Gurusiddappa, W Madhuri, RP Suvarna, KP Dasan Indian J Adv Chem Sci 4 (1), 14-19 , 2016 2016 Citations: 32
Structural, optical and magnetic properties of MgFe2O4 and Ni0. 5Zn0. 5Fe2O4 A Anagha, A Joshua, B Chacko, TA Babu, S Srigiri, W Madhuri Materials Chemistry and Physics 313, 128746 , 2024 2024 Citations: 30