节点文献
以混合价镍氢氧化物为镍源固气合成LiNi0.7Co0.25Al0.05O2
Synthesized of LiNi0.7Co0.25Al0.05O2 by solid-gas method with preoxidized 2NiOOH·Ni（OH）2 as nickle source
【Abstract】 LiNi0.7Co0.25Al0.05O2 was prepared by solid-gas method in O2 at the temperature of 700oC for 8h using preoxidized nanometer-scale Ni3O2(OH)4 powders as nickel source.The products were tested by XRD,XPS,SEM and electrochemistry methods.The results indicated that the prepared product was LiNi0.7Co0.25Al0.05O2 single-phase,having the average size of 1.5μm with globe morphology.In the LiNi0.7Co0.25Al0.05O2,the valence of nickel was +3.In the case of voltage range 4.3~2.5V and the current rate 0.25mA/cm2,the first charge and discharge specific capacities were 172mAh·g-1 and 161mAh·g-1 respectively.According to the cycling tests,LiNi0.7Co0.25Al0.05O2 exhibited good cycling performance.
【关键词】 预氧化；
2NiOOH.Ni(OH)2；
LiNi0.7Co0.25Al0.05O2；
镍价态；
电化学性能；
【Key words】 preoxidized； 2NiOOH·Ni(OH)2； LiNi0.7Co0.25Al0.05O2； nickel valence； electrochemical performance；
【Key words】 preoxidized； 2NiOOH·Ni(OH)2； LiNi0.7Co0.25Al0.05O2； nickel valence； electrochemical performance；
【基金】 教育部博士点基金项目资助(20020610027)
- 【文献出处】 化学研究与应用 ,Chemical Research and Application , 编辑部邮箱 ,2007年12期
- 【分类号】O614.1
- 【下载频次】76