【摘 要】
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At present,Li4Ti5O12(LTO) is regarded as a "zero-strain" insertion material which has exhibited the more excellent cycling stability than the carbon material [1-2].But its shortage is also obvious wit
【机 构】
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College of Chemistry and Chemical Engineering,Xiamen University Xiamen 361005,China
论文部分内容阅读
At present,Li4Ti5O12(LTO) is regarded as a "zero-strain" insertion material which has exhibited the more excellent cycling stability than the carbon material [1-2].But its shortage is also obvious with low theoretic capacity(175 mAh g-1) and low electronic conductivity which hinder LTO to be applied widely.It is considered as an efficient method that the metal cations Mz+ are doped in LTO material to improve the electrochemical performance of LTO.Doping Mz+ not only can improve practical capacity and electronic conductivity,but also can maintain the framework of Ti-based material.More recently,Li2MTi3O8(M = Co,Zn,Mg) have been synthesized and exhibited excellent electrochemical performance.For instance,Li2ZnTi3O8 can perform excellent cycling property and Li2CoTi3O8 has high practical capacity.
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