采用络合法制备了锂离子电池的活性正极材料LiNi0.9Co0.1O2粉体,实验表明合成的LiNi0.9Co0.1O2粉体结晶良好,层状结构发育完善.电池充放电测试结果表明,其容量及循环性能与LiNi0.9Co0.1O2粉体的合成温度有关,其中900℃合成得到的LiNi0.9Co0.1O2材料具有最好的电化学性能,首次放电比容量高达120.5mAh/g,循环30次后可逆放电比容量仍高达118.8mAh/g,容量损失仅为1.4%.文中对容量退化的原因进行了分析.
参考文献
[1] | Fey G T K, Hsieh M C, Jaw H K, et al. J. Power Sources, 1993, 43-44: 673-680. |
[2] | Hajime Arai, Shigeto Okada, Yoji Sakurai, et al. Solid State Ionics, 1997,. 95: 275-282. |
[3] | Koksbang R, Barker J, Shi H, et al. Solid State Ionics, 1996, 84: 1-21. |
[4] | Desilvestro J, Haas O. J. Electrochem. Soc., 1990, 137: 5C-22C. |
[5] | Hajime Arai, Shigeto Okada, Yoji Sakurai, et al. Solid State Ionics, 1997, 95: 275-282. |
[6] | Molenda J, Wilk P. J. Marzee. Solid State Ionics, 1999, 119: 19-22. |
[7] | Richard Gover, Kanno Ryoji, Brian Mitchell, et al. J. Power Sources, 2000, 90: 82-88. |
[8] | Liu Jing, Wen Zhaoyin, Gu Zhonghua, et al. J. Electrochem. Soc., 2002, 149: A1405-A1408. |
[9] | Ohzukum T, Ueda A, Nagayama M. J. Electrochem. Soc., 1993, 140: 1862-1870. |
[10] | Prabaharan S R S, Nasiman B. Saparil, Michael S S, et al. Solid State Ionics, 1998, 112: 25-34. |
[11] | Lu Zhonghua, Huang Xuejie, Huang Hong, et al. Solid State Ionics, 1999, 120: 103-107. |
[12] | 刘景,温兆银,吴梅梅,等.中国科学技术大学学报,已接受. |
[13] | Larcher D, Palacin M, Amatucci G, et al. J. Electrochem. Soc., 1997, 144: 408-417. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%