General Research Institute for Nonferrous Metals,Beijing,100088,China;
School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;
School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;
School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;
lithium-ion batteries; positive materials; LiMn2O4; solid-state reaction; electrochemical properties; doping;