锌负极表面改性对锌镍蓄电池性能的影响

Effects of surface modification of Zn anode on electrochemical performance of Ni-Zn secondary battery

介绍了采用导电碳黑、石墨、石墨水悬浊液、T255镍粉对密封锌镍(Zn-Ni)蓄电池锌负极进行的表面改性处理,比较了上述材料对电池电化学性能的影响。实验结果表明:采用导电碳黑表面处理对提高电池的充放电效率和循环性能、降低内阻效果最明显;而用石墨和石墨水悬浊液对锌负极进行表面处理,效果则不明显。

The surface modification of Zn anode with carbon black, graphite, graphite suspension, T255 nickel powder was introduced. The effects of the mentioned materials on electrochemical performance of Ni-Zn batteries were investigated. The results showed that, the surface modification with carbon black had the best effects for improving the charge/discharge capability and cyclic performance of Ni-Zn battery and for reducing the internal resistance. The effects of surface modification with graphite or graphite suspension were not obvious.