摘要
采用固相烧结法合成了具有Li1+XV3O8结构组成为Li1+XV2.9M0.1O8(M=B,Bi,Ce)和Li1+XV3O7.9F0.1的掺杂正极材料,充放电循环实验表明,在所有掺杂样品中,理论组成为Li1+XV3O7.9F0.1的样品的放电性能和循环性能是最好的,400℃,500℃,600℃烧结的掺氟样的充放电循环实验表明,400℃样品的首次放电容量为235 mAh/g,40循环的放电容量为176 mAh/g,表现出较好的放电性能和循环性能.
Doped lithium vanadium oxides, with the structure of Li1 ＋ xV3O8 and the composition of Li1 ＋xV2.9M0.1O8（M = B, Bi, Ce） and Li1 ＋ XV3O7.9F0.1, were prepared by the solid-state sintering method. The charge-discharge cycle experiments showed the discharged performance and cycle stability of Li1＋x V3O7.9F0.1 sample is best in all doped samples. We then further compared the electrochemical performance of the fluorion doped samples prepared at 400 ℃, 500 ℃, 600 ℃, respectively. The experimental results showed that the fluorion doped sample sintered at 400 ℃ exhibited a capacity of 235 mAh/g at the first cycle and 176 mAh/g at the 40 cycles.
出处
《吉林化工学院学报》
CAS
2006年第1期29-32,共4页
Journal of Jilin Institute of Chemical Technology
基金
教育部重点(03065
JA02159)
福建省自然科学基金(E0510014)
福建省科技厅(K0510011)资助项目
