【作者】 杨占红； 胡俊； 王升威； 王素琴；

【Author】 YANG Zhan-hong,HU Jun,WANG Sheng-wei,WANG Su-qin (College of Chemistry & Chemical Engineering,Central South University,Changsha 410083,China)

【机构】 中南大学化学化工学院；

【摘要】 采用化学沉积法,在氧化锌表面包覆一层硅化合物,并用透射电子显微镜、X射线衍射、Tafel曲线以及充放电循环（用做锌镍电池的负极材料）等方法,对包覆前后的氧化锌样品进行表征。结果表明,包覆物为SiO₂,SiO₂部分包覆在氧化锌的表面;包覆后的氧化锌的腐蚀电位正移,且其电化学循环性能良好,经过269次循环后,放电容量仍保持设计容量的80.33%。更多还原

【Abstract】 Silicon compound was coated on the surfate of the zinc oxide by chemical deposition.The properties of the samples were characterized by TEM,XRD,Tafel plot,and charge-discharge test as the negative electrode materials of Ni/Zn battery.The results show that the chemical composition of coating material is SiO₂,SiO₂ can be partly coated on the surface of zinc oxide.The zinc oxide coated SiO₂ has a more plus corrosion electric potential. The SiO₂ coated sample shows a much better capacity retention,and it can be retained about 80.33%after 269 charge-discharge cycles.更多还原