摘要
利用金相显微镜、扫描电镜、接触角测试、恒流充放电和交流阻抗法研究了聚丙烯酸钠(PAANa)作为分散剂对活性炭电极超级电容器性能的影响,结果表明:0.3%PAANa的分散性最好,能有效地阻止活性炭颗粒的团聚,使电极表面润湿性增加,正负极比电容分别从249.63 F/g和310.55 F/g提高到384.11 F/g和394.41 F/g。
The influences of polyacrylate sodium （PAANa） as dispersant on the performance of supercapacitors with activated carbon electrodes were studied by metaUoscope, SEM, contact angle measurement, galvanostatic charge-discharge and AC impedance methods. The results showed that 0.3% PAANa had the best dispersibility. It prevented the agglomeration of activated carbon efficiently,increased the wettability of the electrode surface. The specific capacitances of anode and cathode were improved from 249.63 F/g and 310.55 F/g to 384.11 F/g and 394.41 F/g,respectively.
出处
《电池》
CAS
CSCD
北大核心
2008年第1期34-36,共3页
Battery Bimonthly
基金
河南省科技攻关项目子项目(0624210004)
关键词
超级电容器
分散剂
聚丙烯酸钠
supercapacitor
dispersant
polyacrylate sodium （PAANa）
