摘要
低温下(0℃)化学氧化合成了盐酸掺杂聚吡咯。分别以聚吡咯和活性炭为电极材料组装成电化学电容器。采用扫描电镜、恒流充放电、循环伏安和交流阻抗测试仪研究了混合电容器的电化学性能。结果表明:低温下合成的聚吡咯呈颗粒状堆积,粒径为100～300nm;电流密度为6×10–3A/cm2时,混合电容器在1mol/LNa2SO4电解液中比电容高达178.6F/g,100次循环后比电容为初始容量的88.4%,漏电流仅为0.16×10–3A/cm2。
Hydrochloride-doped polypyrrole （PPy） was synthesized by chemical oxidation at low temperature condition（0 ℃）. Electrochemical capacitor was assembled with the PPy and activated-carbon as electrode material. The property of the hybrid capacitor was studied by SEM, constant current charge-discharge, cyclic voltammetry and AC impedance. The results indicate that PPy synthesized at low temperature condition is granular and with particle sizes of 100-300 nm. The hybrid capacitor has higher specific capacity （178.6 F/g） and better cycle property when the current is 6 × 10^-3 A/cm^2, and the leakage current is only 0.16 × 10^-3A/cm^2.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2009年第4期64-66,共3页
Electronic Components And Materials
基金
河南省教育厅攻关资助项目(No.2006530006)
关键词
电化学电容器
聚吡咯
活性炭
electrochemical capacitor
polypyrrole
activated-carbon
