混合锌粉包覆工艺中PTFE替代PVA的可行性  

The feasibility of PTFE substituting PVA in mixed zinc powder coating technology

作　　者：张锡军[1] 徐雅琴[1] 段志宇[1] 李仕锦[1] 

机构地区：[1]中国电子科技集团公司第十八研究所,天津300381

出　　处：《电池》2010年第4期198-200,共3页Battery Bimonthly

摘　　要：在混合锌粉包覆过程中,添加质量比为10%的聚四氟乙烯(PTFE)取代传统工艺的聚乙烯醇(PVA)。考察了极板的成形性、均匀性,并采用实验电池进行电性能分析。添加10%的PTFE的混合锌粉在电极成形性、均匀性(厚度、质量)、充放电性能(循环性能、湿寿命)等方面,都略优于添加PVA的混合锌粉,第36次循环(湿寿命性能)的放电容量高出近10%。Polytetrafluoroethylene （PTFE） with mass ratio of 10% was added in the coating process of mixed zinc powder to sub- stitute polyvinyl alcohol （PVA） of traditional technology. The electrode formability, uniformity of plate were investigated, the elec- tric performance was analyzed by experimental cell. The electrode formability, uniformity （thickness, weight） and charge-discharge performance （cycle performance, wet life） of mixed zinc powder adding 10% PTFE were slightly better than mixed zinc powder adding PVA, the discharge capacity at the 36th cycle（wet life performance）was higher,about 10%.

关 键 词：锌电极 包覆 粘合剂 聚四氟乙烯(PTFE) 聚乙烯醇(PVA) 

分 类 号：TM910.5[电气工程—电力电子与电力传动]