用户名: 密码: 验证码:
阳离子掺杂FeF_3·0.33H_2O的理论设计
详细信息    查看官网全文
摘要
FeF_3·0.33H_2O是一种新一代的锂电池正极材料,但较差的导电性阻碍了其实际应用。本文采用第一性原理方法研究不同Ti掺杂对FeF_3·0.33H_2O结构其电子结构的影响,对Ti掺杂体系进行了晶体结构、Bader电荷和能带结构分析,结果表明Ti掺杂不仅能改善FeF_3·0.33H_2O的电子导电性能,而且还能进一步拓宽FeF_3·0.33H_2O的一维通道,有利于锂离子在FeF_3·0.33H_2O中的传输。
FeF_3·0.33H_2O is promising next generation of cathode material as Li-ion battery.However, the poor conductivity of FeF_3·0.33H_2O has prevented its practical application.In this paper, first principles calculations have been implemented to investigate the effect of Ti doping on the crystal structure and electronic structure of FeF_3·0.33H_2O.Ti doped FeF_3·0.33H_2O has been investigated by analysis of crystal structure, Bader charge and energy band.Calculated results indicate the electronic conductivity of FeF_3·0.33H_2O can be improved by Ti-doping.Besides, it can be confirmed that Ti-doping also can broaden the one-dimensional cavity, which is beneficial to Li-ion transmission in the FeF_3·0.33H_2O.
引文
[1]C.L.Li,C.L.Yin,X.K.Mu,J.Maier,Chem.Mater.2013,25:962-969.
    [2]L.Liu,H.P.Guo,M.Zhou,Q.L.Wei,Z.H.Yang,H.B.Shu,X.K.Yang,J.L.Tan,Z.C.Yan,X.Y.Wang,J.Power Sources,2013,238:501-515.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700