刮浆式锌负极初步研究

采用了一种新型锌负极制备工艺——刮浆工艺制备锌负极,该工艺不仅可以实现电极的连续生产,而且可以制备均匀一致的薄型电极。选用羟丙基甲基纤维素(HPMC)、羧甲基纤维素(CMC)、甲基纤维素(MC)、聚乙烯醇(PVA)四种材料作为负极粘结剂,研究了粘结剂种类对刮浆工艺的影响,同时对刮浆式锌电极的电化学性能进行了测试。试验结果表明,采用HPMC或HPMC与PVA混合作为粘结剂,并加入少量淀粉溶液,可以合成与导网具有较好粘附性的锌浆,实现连续刮浆,制备出均匀一致的锌电极。电性能测试结果表明,刮浆工艺制作的锌电极可以满足大功率锌银电池的性能要求。

Investigation of the slurried zinc negative electrode

Slurry technique is initiated in preparing zinc electrode in this paper.This technique can not only realize the continuous manufacture of the zinc electrode,but also prepare homogeneous and thin zinc electrode.Four kinds of binder HPMC,CMC,MC,PVA were selected as the negative electrode binder candidate.Effects of the binders on slurry technique and electrochemical performances of the zinc electrode were investigated.The results showed that the zinc slurry with HPMC or HPMC PVA and amylum solution as binders could meet the requirement of the zinc slurry technique and realized the continuous manufacture and the products were homogeneous.The results of the electrochemical performance tests showed that zinc electrode prepared by slurry technique could meet the requirements of the high rate silver-zinc battery.