First-principles investigation of the effects of Sb doping on the LiNiO2
First-principles investigation of the effects of Sb doping on the LiNiO2
复制标题
Sb掺杂对LiNiO2影响的第一性原理研究
DOI:
10.1016/j.jssc.2016.09.015
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发表时间:
2016-12
影响因子:
3.3
通讯作者:
Shuangying Wei
中科院分区:
文献类型:
--
作者:
Zhenhua Yang;Zhijuan Zhang;Yanjun Pan;Shu Zhao;Yunqing Huang;Xianyou Wang;Xiaoying Chen;Shuangying Wei
First-principles calculations have been carried out to investigate the effects of Sb doping on the LiNiO2. It is found that crystal lattice parameters of the Sb-doped LiNiO2increase with the increasing doping concentration of Sb. In order to properly assess the difficulty of Sb doping in the LiNiO2, the formation energies of SbxNi12−xO24(x=1,2,3) are firstly obtained according to the elemental chemical potentials determined by the phase stability conditions. Calculated formation energies indicate that the growth conditions of Sb2O5-rich, O-rich and Ni-rich contribute to the formation of SbxNi12−xO24(x=1,2,3). Furthermore, Sb1Ni11O24, Sb2Ni10O24and Sb3Ni9O24all have good thermodynamic stability if their growth conditions are reasonably adjusted. Besides, among Li12Ni12O24, Li12SbNi11O24, Li12Sb2Ni10O24and Li12Sb3Ni9O24,Li12Sb2Ni10O24has the smallest ratio of volume change and the highest theoretical average intercalation voltage during Li ion lithiation/delithiation process. Therefore, electronic structures of Li12Ni12O24and Li12Sb2Ni10O24are further analyzed. The calculated results demonstrate that Li12Sb2Ni10O24has better stability and conductivity than Li12Ni12O24. Moreover, in the Li12Sb2Ni10O24, the electrostatic interaction between Li+and Ni-O layers reduces compared with LiNiO2, which suggests that the diffusion ability of Li can be improved by Sb doping. Moreover, Li12Sb2Ni10O24has better electrochemical properties than LiNiO2.
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影响因子:
3.7
作者:
Kresse, G;Furthmuller, J
通讯作者:
Furthmuller, J
DOI:
10.1140/epjb/e2008-00303-x
发表时间:
2008-07
期刊:
The European Physical Journal B
影响因子:
--
作者:
Wei‐Bing Zhang;N. Yu;W. Y. Yu;Bi‐Yu Tang
通讯作者:
Wei‐Bing Zhang;N. Yu;W. Y. Yu;Bi‐Yu Tang
影响因子:
--
作者:
M. Jansen
通讯作者:
M. Jansen
影响因子:
5.2
作者:
S. Kwon;Jihong Song;D. Mumm
通讯作者:
S. Kwon;Jihong Song;D. Mumm
影响因子:
3.7
作者:
Zhou, F;Cococcioni, M;Ceder, G
通讯作者:
Ceder, G