纳米银粉对锌负极电化学性能的影响  

Effect of nanosilver on the electrochemical performance for zinc anode

作　　者：张永强[1,2] 杨长春[2] 

机构地区：[1]河南教育学院化学与环境学院,河南郑州450046 [2]郑州大学化学与分子工程学院,河南郑州450001

出　　处：《电池》2014年第4期217-219,共3页Battery Bimonthly

基　　金：河南省自然科学基金(132102210161)

摘　　要：以葡萄糖为还原剂、聚乙烯吡咯烷酮（PVP）为分散剂,在碱性条件下化学还原硝酸银溶液制备纳米银粉,再通过共沉积掺入到锌负极中,考察制备的锌镍电池的充放电、倍率和循环性能。锌负极中掺入银后,氢气的析出受到抑制,放电电压和容量都得到提高。掺银0.07%的锌负极以1 C在2.0-1.3 V循环30次,放电容量为最高值的46.6%。Nanosilver powder was obtained by reducing AgNO3 solution in alkaline condition with glucose as reductant, PVP as dispersant, then was doped into Zn anode by codeposition, the charge-discharge, rate and cycle performance of prepared Ni-Zn battery was investigated. After doping Ag, hydrogen evolution was suppressed,the discharge voltage and capacity was elevated. After cycle 30 times at 1 C in 2. 0 - 1.3 V,the discharge capacity of Zn anode doped with 0.07% Ag was 46. 6% of the maximum value.

关 键 词：纳米银 锌负极 锌镍二次电池 电化学性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]