海藻酸钠水性粘结剂对石墨负极电化学性能的影响

摘要

应用循环伏安、恒电流充放电等电化学方法以及利用扫描电镜对循环后的电极进行分析,研究海藻酸钠水性粘结剂对石墨负极电化学嵌脱锂性质行为的影响.结果表明,海藻酸钠对石墨电极的初始充放电容量、库仑效率、倍率充放电性质以及电化学循环性能均有一定的影响.水性粘结剂对改善石墨电极的嵌脱锂循环方面具有较大的发展前景.%The electrochemical behavior of graphite electrode based on water binder was investigated by u-sing cycling voltammetry, galvanostatic charge-discharge techniques and using SEM for analysis of the e-lectrode after cycling. The effect of water-binder based on sodium alginate on electrochemical performance of graphite electrode was studied. The results showed that sodium alginate as water binder had effect on the first charge-discharge capacity, rate capability and cycling performances of the graphite electrode. The study on effect of water-binder on galvano-chemistry of graphite electrode had a good future.