Influence of electrolyte characteristics on the electrochemical parameters of electrical double layer capacitors

Influence of electrolyte characteristics on the electrochemical parameters of electrical double layer capacitors
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电解液特性对双电层电容器电化学参数的影响

DOI:
10.1007/s10008-003-0458-9
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发表时间:
2004
影响因子:
2.5
通讯作者:
M. Arulepp
M. Arulepp
中科院分区:
工程技术4区
文献类型:
--
作者:
E. Lust;A. Jänes;M. Arulepp

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采用循环伏安法、计时电流法和电化学阻抗法测试了在碳酸丙烯酯中添加不同的1 M Me3EtNBF4、Me2Et2NBF4、MeEt3NBF4、Et4NBF4、Et3PrNBF4和Et3BuNBF4电解质的理想极化纳米多孔碳电极的双电层电容器。讨论了理想极化率、低频极限电容和串联电阻、时间常数、Ragone图(能量密度与功率密度的依赖关系)和其他特性的极限。研究了电解质摩尔质量对纳米多孔碳电极电化学性能的影响。的Srinivasan和Weibrant模型的适用性限制进行了测试。
Electrical double layer capacitors based on ideally polarizable nanoporous carbon electrodes in propylene carbonate with the addition of different 1 M Me3EtNBF4, Me2Et2NBF4, MeEt3NBF4, Et4NBF4, Et3PrNBF4and Et3BuNBF4electrolytes have been tested by cyclic voltammetry, chronoamperometry and electrochemical impedance methods. The limits of ideal polarizability, low-frequency limiting capacitance and series resistance, time constant, Ragone plots (energy density vs. power density dependencies) and other characteristics have been discussed. The influence of the electrolyte molar mass on the electrochemical characteristics of the nanoporous carbon electrode cells has been established. The applicability limits of the Srinivasan and Weidner model have been tested.