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Ru incorporation Enhanced electrochemical performance of spray deposited Mn: Co 3 O 4 nano-composite: Electrochemical approach
Journal of Analytical and Applied Pyrolysis ( IF 5.8 ) Pub Date : 2018-06-01 , DOI: 10.1016/j.jaap.2018.01.013
R.C. Ambare , B.J. Lokhande

Abstract Paper highlights, enhanced electrochemical performance of spray pyrolysed ruthenium (Ru) incorporated manganese-cobalt oxide (Mn: Co3O4) thin films, prepared via non aqueous route on to stainless-steel at 623 ± 2 K. In the 1st phase of the work, prepared samples were characterized by XRD, SEM, TEM, SAED, EDAX and XPS and in the 2nd phase, samples were analyzed electrochemical characterizations. CV study shows mixed capacitive behavior for all electrodes. For optimized Ru-incorporation, prepared electrode exhibits maximum specific capacitance 1440.0 F/g at 1 mV/s scan rate in 1 M KOH. Excellent electrochemical stability is observed at 100 mV/s scan rate. Using charge-discharge study, the calculated values of specific energy, specific power and columbic efficiency were found as 1.1 Wh/kg, 2.80 kW/kg and 96.72% respectively. Electrochemical impedance measurement is scanned in the frequency range 1 mHz to 1 MHz. The internal resistance exhibited by the electrode as observed using Nyquist plot is ∼1.12 Ω. By using ZsimpWin software, equivalent circuit was searched.

中文翻译:

加入 Ru 增强喷涂沉积的 Mn:Co 3 O 4 纳米复合材料的电化学性能:电化学方法

摘要 论文重点介绍了喷雾热解钌 (Ru) 结合锰钴氧化物 (Mn: Co3O4) 薄膜的增强电化学性能,该薄膜通过非水性途径在 623 ± 2 K 下制备到不锈钢上。 在工作的第一阶段, 制备的样品通过 XRD、SEM、TEM、SAED、EDAX 和 XPS 进行表征,并在第二阶段对样品进行电化学表征分析。CV 研究显示所有电极的混合电容行为。对于优化的 Ru 掺入,制备的电极在 1 M KOH 中以 1 mV/s 扫描速率显示出最大比电容 1440.0 F/g。在 100 mV/s 扫描速率下观察到优异的电化学稳定性。通过充放电研究,比能量、比功率和库伦效率的计算值分别为1.1 Wh/kg、2.80 kW/kg和96.72%。电化学阻抗测量在 1 mHz 至 1 MHz 的频率范围内进行扫描。使用奈奎斯特图观察到的电极表现出的内阻为~1.12 Ω。使用ZsimpWin软件搜索等效电路。
更新日期:2018-06-01
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