Spinel Phases LiRExMn2-xO4(RE=Nd,Ce) as Cathode for Rechargeable Lithium Batteries
来源期刊：JOURNAL OF RARE EARTHS2000年第2期
论文作者：JIN Zeng-yuan PENG Zheng-shun JIANG Yang
Key words：rare earths; lithium-manganese-oxide; cathode materials; lithium-ion battery; doping;
Abstract: Several series of LiRExMn2-xO4(RE=Ce, Nd) samples prepared at different contents and in different rare earth metals substitution were studied in order to further understand the dependence of the electrochemical performance on the doping rare earth metals. These cathodes were more tolerant to repeat lithium extraction and insertion than a standard LiMn2O4 spinel electrode in spite of a small reduction in the initial capacity. X-ray photoelectron spectroscopy results show that the Mn4+ contents for spinel LiMn2O4 directly affected the initial capacity and cyclability of LiMn2O4.
JIN Zeng-yuan1，PENG Zheng-shun1，JIANG Yang1
(1.Department of Chemistry, Capital Normal University, Beijing 100037, China)
Abstract:Several series of LiRExMn2-xO4(RE=Ce, Nd) samples prepared at different contents and in different rare earth metals substitution were studied in order to further understand the dependence of the electrochemical performance on the doping rare earth metals. These cathodes were more tolerant to repeat lithium extraction and insertion than a standard LiMn2O4 spinel electrode in spite of a small reduction in the initial capacity. X-ray photoelectron spectroscopy results show that the Mn4+ contents for spinel LiMn2O4 directly affected the initial capacity and cyclability of LiMn2O4.
Key words:rare earths; lithium-manganese-oxide; cathode materials; lithium-ion battery; doping;
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