中国物理B ›› 2010, Vol. 19 ›› Issue (11): 117101-117102.doi: 10.1088/1674-1056/19/11/117101
赵灵智1, 李伟善1, 黄钊文2, 胡社军2, 侯贤华2, 汝强2, 张志文2
Huang Zhao-Wen(黄钊文)a), Hu She-Jun(胡社军)a)†, Hou Xian-Hua(侯贤华)a), Zhao Ling-Zhi(赵灵智)b), Ru Qiang(汝强) a),Li Wei-Shan(李伟善)b), and Zhang Zhi-Wen(张志文)a)
摘要: The mechanism of lithium intercalation/deintercalation for phase Al0.8Ni3Sn0.2 as anode material used in lithium ion battery was studied carefully based on the first-principle plane wave pseudo-potential method. The calculated results indicated that Sn--Ni--Al alloy had high theoretical capacity when used as anode material, however, there was high initial irreversible capacity loss because of the large volume expansion. Therefore the technological parameters during preparing the Sn-Ni-Al anode should be controlled strictly to make the content of Al0.8Ni3Sn0.2 phase as low as possible and to make the anode consist of promising Sn--Ni and Al--Ni phases. For comparison, an experiment based on magnetron sputtering was done. The result showed that the calculation is in good agreement with the experiment. We found that the first-principle investigation method is of far-reaching significance in synthesising new commercial anode materials with high capacity and good cycle performance.
中图分类号: (Electrodes)