本文研究了一种新型的制备锂离子电池正极材料的工艺方法通过喷雾干燥法制备出 Ｌｉ Ｃｏ Ｏ２超细粉试验中， 进行了混合粉体的 Ｄ Ｔ Ａ/Ｔ Ｇ Ａ 分析； Ｘ Ｒ Ｄ 谱分析显示， 所得 Ｌｉ Ｃｏ Ｏ２ 为具有α- Ｎａ Ｆｅ Ｏ２ 层状结构的 Ｈ Ｔ-Ｌｉ Ｃｏ Ｏ２ ； 从 Ｓ Ｅ Ｍ 照片可见， Ｌｉ Ｃｏ Ｏ２ 粉末元素分布均匀， 粒径为几百纳米；电化学性能测试结果表明， 其充电容量为１４８ｍ Ａ·ｈ/ｇ ， 放电容量为１３５ｍ Ａ·ｈ/ｇ， 具有优良的电化学性能.
A novel technique was studied to prepare cathode materials for lithium-ion battery. Ultrafine LiCoO2 powders were synthesized by a spray drying method. DTA/TGA
were employed to analyze the mixed powders. XRD results show that the prepared LiCoO2 is HT-LiCoO2 which has α-NaFeO2 structure type. SEM photographs
show that the powders are homogeneous with grain size of hundreds of nanometer. Electrochemical property experiments testify that the powders have excellent
electrochemical properties with initial charge capacity of 148mAh/g and discharge capacity of 135mAh/g. Its prospect of industrialization is attractive.
参考文献
| [1] | Megahed S, Ebner W. J. Power Sources, 1995, 54： 155--162 2 Koksbang R, Barker J, Shi H, et al. Solid State Ionics, 1996, 84?： 1--21 3 杨华铨，孙宝云，王纲群等. 物理化学学报，1996， 12： 716--720 4 小木规，勉古森秀树，永山雅敏等? J. of the Ceram. Soc. of Japan, 1992, 100?： 346--349 5 Amatucci G G, Tarascon J M, Larcher D, et al. Solid State Ionics, 1996, 84?： 169--180 6 Sun Yang-Kook, Oh In-hwah, Hong Seong-ahn. J. Mater. Sci., 1996, 31?： 3617--3621 7 Chiang Yet-Ming, Jiang Young-Il, Wang Hai-Feng, et al. J. Electrochem. Soc., 1998, 145?： 887--891 8 Le Dinh Ba, Smyrl William H, Owens Boone, et al. WO96,38865(PCT), 1996 9 Gummow R J, Liles D C, Thackeray M M. Mat. Res. Bull., 1993, 28?： 1177--1184 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%