Affiliation:
1. Jiangsu Province Engineering Laboratory of High Efficient Energy Storage Technology and Equipments School of Materials Science and Physics China University of Mining and Technology Xuzhou 221116 China
2. Guangdong-Hong Kong-Macau Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Institute of Applied Physics and Materials Engineering University of Macau Macau 999078 China
3. Jiangsu Key Laboratory of Electrochemical Energy Storage Technology College of Material Science and Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China
4. Contemporary Amperex Technology Co. Limited Ningde 352100 China
Abstract
AbstractLithium‐ion batteries (LIBs) have been widely used as a new energy storage system with high energy density and long cycle life. However, the solid electrolyte interface (SEI) formed on the surface of anode consumes excess active lithium during the initial cycle, resulting in an initial irreversible capacity loss (ICL) and reducing the overall electrochemical performance. To solve the critical issue, pre‐lithiation technology has been accepted as one of the most promising strategies. Due to the pre‐lithiated treatment provides additional active lithium to compensate for the ICL and effectively improves initial Coulombic efficiency (ICE), leading to raising the working voltage, increasing the Li+ concentration, as well as improving the energy density and cycle stability of LIBs. In this overview, the causes of ICL in LIBs are analyzed from different perspectives, and various pre‐lithiation strategies are systematically classified and summarized. Finally, some current problems and development prospects in this field are summarized, with prospects for realizing industrialized technologies.
Funder
Natural Science Foundation of Jiangsu Province
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Natural Science Foundation of Guangdong Province
VNU Science and Technology Development Fund