Citation:
Yang Hua-Quan, Sun Bao-Yun, Wang Gang-Qun, Li Neng, Zhang Wan-Jing, Lin Bing-Xiong. Study on the Structure and Electrochemical Performances of LiCoO2 Dopped with Ni2+[J]. Acta Physico-Chimica Sinica,
;1996, 12(08): 716-720.
doi:
10.3866/PKU.WHXB19960809
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The relationship of the synthesis conditions of the materials, modification of their imperfect structure as well as electrochemical performances are investigated systematically for the series of complex oxides LixCo1-yNiyO(2-δ) (x=1, 0<y<0.5). The results indicate that during the substitution of Co ion Ni2+ ion occupies the A site with finite probability. The empties A or B and O sites occur with different proportion when Ni2+ ions are dopped in ABO2 type of LiCoO2. The Co ion have a super-high average valence state and the distance of Li(Ni)-O and O-O increase in the imperfect structure. Therefor, the conductivities of these series of complex oxides and the specific capacity of the batteries are increased.
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