摘要
用sol-gel法制备了水合二氧化钌,进而制备了二氧化钌/活性炭复合电极,并对各种不同配比的复合电极的电化学性能和物理性能进行了实验研究。引入参数Cp,RuO2·xH2O,解释复合电极的电容特性,更好地考察了水合钌氧化物的利用率。结果表明,在二氧化钌中加入适量的活性炭,可以改善电极材料的阻抗特性,但将以降低电容量为代价,当二氧化钌含量为60%(质量分数)时,复合电极的比容量为567F/g,内阻为0.4331Ω,是一种理想的超级电容器电极材料。
Amorphous hydrous ruthenium oxide/active carbon composite electrodes were prepared, which amorphous hydrous ruthenium oxide was formed by a sol-gel process, Several different proportions of composite electrodes were fabricated with the RuO2·xH2O and active carbon, and tested in their electrochemical performances and physical characteristics. To evaluate the degree of ruthenium oxide utilization, a new parameter （Cp, RuO2·xH2O） was introduced to account for the capacitance proportions of composite electrodes. The results show that it can improve the impedance characteristic and expense the capability of composite electrode by joined with active carbon. The results show that the composite electrode with 60 % （mass fraction） amorphous hydrous ruthenium oxide and 40 % active carbon is ideal, and its specific capacitance and inner resistance are 567 F/g and 0.433 1 Ω, respectively,
出处
《电子元件与材料》
CAS
CSCD
北大核心
2006年第10期23-25,共3页
Electronic Components And Materials
基金
国家自然科学基金资助项目(50577075)
关键词
电子技术
超级电容器
复合电极
二氧化钌
比容量
electronic technology
supercapacitors
composite electrodes
RuO2 · xH2O
specific capacitance
