Rajur Sanjay H, Chikkatti Bipin S, Barnawi Abdulwasa Bakr, Bhutto Javed Khan, Khan T M Yunus, Sajjan Ashok M, Banapurmath Nagaraj R, Raju A B
Department of Electrical and Electronics Engineering, KLE Technological University, Hubballi, 580031, India.
Department of Chemistry, KLE Technological University, Hubballi, 580031, India.
Heliyon. 2024 Apr 15;10(8):e29724. doi: 10.1016/j.heliyon.2024.e29724. eCollection 2024 Apr 30.
The electrochemical act of valve-regulated lead acid batteries can be enhanced by conductive materials like metal oxides. This work aims to examine the preparation and influence of zirconia on poly(vinyl alcohol) based gel valve-regulated lead acid battery. Characterizations like Fourier transform infrared spectroscopy, ionic conductivity, water retention study, cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge techniques were done. The optimized gel system exhibited a discharge capacity of 198.45 μAh cm at the current density of 0.6 mA cm. The battery cell with an optimized gel matrix displayed a maximum discharge capacity of 22.5 μAh at a current of 20 μA. After 500 continuous cycles, the battery attained a discharge capacity retention of 91 %. The presence of zirconia will increase the electrochemical performance of gel valve-regulated lead acid batteries.
阀控铅酸电池的电化学性能可通过金属氧化物等导电材料得到增强。本工作旨在研究氧化锆对基于聚乙烯醇的凝胶阀控铅酸电池的制备及其影响。采用了傅里叶变换红外光谱、离子电导率、保水研究、循环伏安法、电化学阻抗谱和恒电流充放电技术等表征方法。优化后的凝胶体系在电流密度为0.6 mA/cm²时表现出198.45 μAh/cm²的放电容量。具有优化凝胶基质的电池单元在20 μA电流下显示出最大放电容量为22.5 μAh。经过500次连续循环后，电池的放电容量保持率达到91%。氧化锆的存在将提高凝胶阀控铅酸电池的电化学性能。
