期刊论文

Chen, Zhaoyong

英文

Journal of Alloys and Compounds

0925-8388

2015

650

684-691

10.1016/j.jallcom.2015.08.041

This work was financially supported by the National Natural Science Foundation of China (No. 51304031 ), the Hunan Provincial Natural Science Foundation of China (No. 14JJ3089 ), the Hunan Provincial Scientific Program of China (No. 2014FJ3159 ), the Construct program of the Key Discipline in Hunan province and Aid program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province .

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Li2MnO3-coated LiNi0.5Co0.2Mn0.3O2 materials are successfully synthesized by sol-gel method. The effects of various pH values and Li2MnO3 contents on the structural and electrochemical properties of LiNi0.5Co0.2Mn0.3O2 cathode materials are systematically investigated, respectively. Scanning electron microscope, transmission electron microscope and energy dispersive spectrometer confirm that the particles of LiNi0.5Co0.2Mn0.3O2 are completely coated by crystalline Li2MnO3 phase. Electrochemical tests show that suitable Li2MnO3-coated samples ex...