【作者】 徐文东； 陈进富； 李术元；

【Author】 XU Wen-dong, CHEN Jin-fu, LI Shu-yuan (National Heavy Oil Laboratory, University of Petroleum, Beijing 102200, China)

【机构】 石油大学国家重质油研究室；

【摘要】 研究了KOH电解液浓度和电极中PTFE粘接剂含量对电极电容及等效串联电阻的影响。实验结果表明,随电解液浓度的增加,电极的容量先增加后减小,在KOH的浓度为14.1%(质量分数)时出现极大值。随电极中粘接剂含量的增大,其比表面积逐渐下降,比容量明显减小,其含量为6.1%(质量分数)时电极性能最佳,控制粘接剂含量是改善电极性能的重要因素。通过设计和计算电极简化的等效电路,定量分析了电解液浓度对电极性能的影响,与实验测量结果一致,证明其等效电路合理准确,为今后研究其他性能提供理论和微观依据,并为确定最佳工艺参数提供快捷、有效的途径。更多还原

【Abstract】 The effects on electric double layer capacitor about electrolyte concentration and bonder content were studied. It is shown that electrode capacitor increases, and then decreases with electrolyte concentration rising. When KOH concentration is approximate 14.1wt%, its capacitor shows maximum about 160 F/g. As the concentration of bonder increasing, its specific surface area is gradually decreasing, storage capability is falling, and specific capacitor is reducing in evidence. Then the optimize bonder concentration is about 6.1wt%. The effects of KOH concentration on electrode were analyzed qualitatively through designing and calculating the simple equivalent circular, which is consistent with experiment measures. The equivalent circular is testified to be rational and various, which offers theoretic and microcosmic evidence to qualitative analyzes, and provides effectively measures on the quantitive choice of optimize technical parameter.更多还原