无机材料学报2012，Vol.27Issue(6)：580-584,5.DOI:10.3724/SP.J.1077.2012.00580
球磨对ZnO的结构、形貌和电化学性能的影响
Effect of Mechanical Milling on Structure, Morphology and Electrochemical Performance of Zinc Oxide Powders
摘要
Abstract
ZnO powders were treated by mechanical milling. The structure and morphology of ZnO powders milled for different periods were characterized by XRD and SEM. The discharge behavior and cycle life of ZnO electrodes in Zn/Ni batteries were studied by galvanostatic charge and discharge tests. The incorporation of cycle voltammetry was adopted to investigate charge and discharge mechanisms of ZnO electrodes. The results showed that the grain size of the powders decreased from 135.6 nm to 17.9 nm while the lattice strain increased from 0.06% to 0.57% during milling, which could be attributed to the formation and movement of dislocations. The electrochemical reaction activity of ZnO powders was improved by mechanical milling, resulting in an increase of discharge capacity. ZnO powders milled for 100 h shows a high discharge capacity of 300.6 mAh/g, which is 50 mAh/g higher than that of the unmilled ZnO powders.关键词
球磨/ZnO/结构/电化学性能Key words
mechanical milling/ ZnO/ structure/ electrochemical performance分类
化学化工引用本文复制引用
李佳佳,赵相玉,马立群,杜伟,丁毅..球磨对ZnO的结构、形貌和电化学性能的影响[J].无机材料学报,2012,27(6):580-584,5.基金项目
江苏高校优势学科建设工程资助项目 （）
江苏省2011年度普通高校研究生科研创新计划项目 （）
稀土资源利用国家重点实验室开放课题(2011010) （2011010）
