采用浸渍法和掺杂法分别在活性炭中负载金属Cu,初步电化学性能测试表明,活性炭负载金属Cu可以提高活性炭电极的放电容量,但不同负载方法对其循环性能造成较大的影响.通过电镜照片和XRD等手段对金属在活性炭上的负载状态进行分析比较,结合电极的充放电性能,发现在活性炭中均匀掺杂金属Cu,可以提高电容器的放电容量,且电化学性能稳定.
Cu-activated carbon composite electrodes were prepared by the impregnation method and the mixing method. The
porous structures and electrochemical double-layer capacitance of activated carbons loaded with metal Cu were investigated by using nitrogen gas adsorption and
constant current cycling (CCC) methods. The results show that activated carbon loaded with metal Cu can improve the discharge capacitance of the electrodes,
however, the different loading methods will lead to the varied influences on the cycle characterization of the electrodes. SEM, TEM and XRD technologies
show that the stable electrochemical characterization obtained from the activated carbon mixed metal Cu electrode mainly depends on the metal particles
dispersed homogeneously in all parts of the activated carbon.
参考文献
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