炭气凝胶为电极的超级电容器的研究

Study on carbon aerogel electrodes for supercapacitor

采用低分子线性酚醛树脂 糠醛为原料通过溶液 溶胶 凝胶途径成功合成了炭气凝胶,探讨了结构对电化学性能的影响。采用直流循环法测定炭气凝胶为电极的超级电容器的电化学性能,结果表明,炭气凝胶电极在0.5mA充放电时电极的比电容为121F/g,充放电效率为95%,具有性能稳定、充放电效率高等优良性能。

Carbon aerogel was synthesized from resorcinol and formaldehyde by sol-gel process. The structure and pore size distribution of carbon aerogel were studied. Constant current cycle was used to measure the electrochemical property of supercapacitor made of carbon aerogel electrode in NaOH electrolyte. The results showed that carbon aerogel electrode exhibited excellent high efficiency and stable electrochemical behavior. The specific capacitance was as high as 121 F/g at 0.5 mA current and the efficiency of charge-discharge achieved 95%.