Open AccessInfluence of Cu doping and high-pressure torsion on electrochemical performance of lithium-rich cathode material
Author(s) -
Mingcai Wang,
Fan Zhang,
Linfeng Chen,
Bin Xu,
Zhonglu Cui,
Kaveh Edalati
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1750/1/012077
Subject(s) - electrochemistry , cathode , doping , materials science , faraday efficiency , manganese , ion , lithium (medication) , oxide , inorganic chemistry , chemical engineering , electrode , chemistry , metallurgy , optoelectronics , organic chemistry , medicine , engineering , endocrinology
Lithium-rich manganese based layered oxide yLi 2 MnO 3 ∙(1-y)LiMO 2 (M=Ni, Co and Mn) is one of the candidate materials for high-capacity cathodes in next-generation lithium-ion batteries. Ion doping with cation and introducing oxygen vacancy are regarded as two methods to change the electrochemical performance of Li-rich cathode materials. In this work, Li 1.2 Mn 0.54 Co 0.13 Ni 0.13 O 2 was synthesized via one-step co-precipitation process, ion doping with low cost element Cu as well as high-pressure torsion were carried out to modify the Li-rich material. Results show that doping with Cu can slightly improve the specific discharge capacity as well as the coulombic efficiency which may be attributed to the lower cation mixing degree.