Recent developments in advanced anode materials for lithium-ion batteries

Hui Chang,Ting-Feng Yi,Xiao Han,Yu-Rong Wu

doi:10.20517/energymater.2021.02

Abstract

The rapid expansion of electric vehicles and mobile electronic devices is the main driver for the improvement of advanced high-performance lithium-ion batteries (LIBs). The electrochemical performance of LIBs depends on the specific capacity, rate performance and cycle stability of the electrode materials. In terms of the enhancement of LIB performance, the improvement of the anode material is significant compared with the cathode material. There are still some challenges in producing an industrial anode material that is superior to commercial graphite. Based on the different electrochemical reaction mechanisms of anode materials for LIBs during charge and discharge, the advantages/disadvantages and electrochemical reaction mechanisms of intercalation-, conversion- and alloying-type anode materials are summarized in detail here. The methods and strategies for improving the electrochemical performance of different types of anode materials are described in detail. Finally, challenges for the future development of LIBs are also considered. This review offers a meaningful reference for the construction and performance optimization of anode materials for LIBs.

Highlights

With the decline of oil and other traditional energy sources, the development and utilization of renewable energy sources, such as solar, wind and tidal power, have become critical problems to be solved in the new era[1-3]
The results show that Li5 Cr7Ti6O25 has the best electrochemical performance when the coating amount of CeO2 is 3 wt.%
The advantages and problems of each type of anode material and the corresponding optimization strategies are described in detail

Summary

Introduction

With the decline of oil and other traditional energy sources, the development and utilization of renewable energy sources, such as solar, wind and tidal power, have become critical problems to be solved in the new era[1-3]. There are two main methods to improve the electrochemical performance of graphite anodes, namely, accelerating the diffusion of lithium ions into graphite and the entire electrode and enhancing the interfacial reaction between graphite and electrolyte to form a thinner and more stable SEI layer.

Results

Conclusion