Abstract：
Manganese oxide is a potential agent in the field of energy storage owing to its changeable redox characteristics, high theoretical specific capacitance and valence shells for charge transfer. On the other hand, due to huge surface area, affordability, customisable composition, layered structure and high theoretical specific capacitance, layered double hydroxides, or LDHs, have drawn a lot of interest. This study employs a three-electrode setup to investigate the supercapacitive performance of λ-manganese dioxide/Cu-Al LDH composite at different compositional ratios. To enhance the adhesive and conductivity capabilities, 10% of CNT additive and PVDF binder are added for the composites. Out of all the composites, the one with the greatest weight percentage of λ-manganese dioxide shows the best electrode performance with a superior specific capacitance of 164 F/g at a scan rate of 10 mV/s. Additionally, using a symmetrical two-electrode setup, the best-performing electrode is examined. The result shows an exceptional potential window of 2.7 V in a basic electrolyte, a power density of 4.04 kW/kg at 3 A/g, an energy density of 20.32 Wh/kg at 1 A/g, and a specific capacitance of 37 F/g.
摘要：
氧化锰由于其具有多变的氧化还原特性，是储能领域的潜在试剂，高理论比电容和价壳电荷转移。另一方面,由于巨大的表面积，负担能力，可定制的构图，层状结构和高理论比电容，层状双氢氧化物，或LDH，引起了很多兴趣。本研究采用三电极设置来研究不同组成比的λ-二氧化锰/Cu-AlLDH复合材料的超电容性能。为了增强粘合和导电能力，为复合材料添加10%的CNT添加剂和PVDF粘合剂。在所有的复合材料中，在10mV/s的扫描速率下,具有最大重量百分比的λ-二氧化锰显示出最佳的电极性能,具有164F/g的优异的比电容。此外,使用对称的双电极设置，检查性能最好的电极。结果表明，在碱性电解质中，异常的电势窗口为2.7V，3A/g时的功率密度为4.04kW/kg，1A/g时的能量密度为20.32Wh/kg，和37F/g的比电容。
