摘要
为了研究煤基活性炭电极对超级电容器性能的影响规律,根据超级电容器的工作原理,阐述了比表面积、孔径分布、表面官能团、石墨化程度、灰分及粒度对电化学性能的影响。研究表明适宜的中孔比例和粒度有利于电解液的扩散;含氧和含氮官能团可以改善电极的表面润湿性;无定型炭结构孔隙更发达,更适合作为活性炭材料;降低灰分可以提高电极的充放电特性和倍率特性。
In order to study the influence of coal-based activated carbon electrode on the performance of supercapacitor. According to the working principle of the sopercapaeitor, the influences of specific surface area, pore size distribution, surface functional groups, degree of graphitization, ash content and granularity of activated carbon on the electrochemical performance were systematically investigated. It shows that proper proportion of naesopore and proper granularity are in favour of the diffusion of the electrolyte ions ; Oxygen-containing functional groups and nitrogen-containing functional groups can improve the wettability of electrode materials;the pore structure of amorphous carbon is well-developed,as activated carbon materialsuitable;reducing the ash content can improve the charge and discharge characteristic and the rate performance.
出处
《洁净煤技术》
CAS
2017年第5期56-61,共6页
Clean Coal Technology
基金
国家自然科学基金-煤炭联合基金重点资助项目(U1361212)
国家自然科学基金资助项目(21506047)
河北省教育厅重点资助项目(ZD2014016)
关键词
煤基活性炭
电极
超级电容器
电化学性能
coal-based activated carbon
electrode material
supercapacitor
electrochemical performance
