引用本文:
张宝宏, 张娜. 纳米MnO2超级电容器的研究[J]. 物理化学学报,
2003, 19(03): 286-288.
doi:
10.3866/PKU.WHXB20030323
Citation: Zhang Bao-Hong, Zhang Na. Research on Nanophase MnO2 for Electrochemical Supercapacitor[J]. Acta Physico-Chimica Sinica, 2003, 19(03): 286-288. doi: 10.3866/PKU.WHXB20030323
Citation: Zhang Bao-Hong, Zhang Na. Research on Nanophase MnO2 for Electrochemical Supercapacitor[J]. Acta Physico-Chimica Sinica, 2003, 19(03): 286-288. doi: 10.3866/PKU.WHXB20030323
纳米MnO2超级电容器的研究
摘要:
用固相合成法制备纳米MnO2，作为超级电容器材料，通过循环伏安、交流阻抗与恒电流充放电等测试手段对MnO2电极进行分析.结果表明,以1 mol•L－1 KOH为电解液， MnO2电极在－0.1～0.6 V(vs. Hg/H )的电压范围内具有良好的法拉第电容性能.在不同电流密度下，电极比容量达240.25到325.21 F•g－1.恒电流充放电5000次后，电极容量衰减不超过10％.
English
Research on Nanophase MnO2 for Electrochemical Supercapacitor
Abstract:
The nanophase MnO2 was synthesized by solid-phase reaction as electrode material for electrochemical supercapacitor and the MnO2 electrode was tested by cyclic voltammetry(CV),electrochemical impedance spectrometry (EIS) and constant charge-discharge curves. The result shows that MnO2 electrode has od performance of faradic pseudocapacitance in 1mol•L－1 KOH between －0.1 and 0.6 V(vs Hg/H ). The electrode can provide a specific capacitance of 240.25 to 325.21 F•g－1 at different current densities. After 5000 cycles of constant charge-discharge the capacitance reduces no more than 10％.
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