Ion conducting Li2SiO3-coated lithium-rich layered oxide exhibiting high rate capability and low polarization.
Lithium-rich Li(1.13)Ni(0.30)Mn(0.57)O2 has been functionally modified with fast Li(+)-ion conducting Li2SiO3via a facile and novel method, based on the reaction between Ni(0.35)Mn(0.65)C2O4·xH2O and Si(OC2H5)4. Due to the unique Li2SiO3 coating layer which greatly improves the Li(+) ion diffusion rate, Li2SiO3@Li(1.13)Ni(0.30)Mn(0.57)O2 exhibits outstanding rate capability, cycle stability and low polarization.
College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China. xlxiao@ucas.ac.cn huzq@ucas.ac.cn.
Enyue
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Zhao
Xiangfeng
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Liu
Hu
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Zhao
Xiaoling
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Xiao
Zhongbo
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Hu