Research progress on silicon-based materials used as negative electrodes for lithium-ion batteries

School of Chemistry, Sun Yat-sen University, 510006 Guangzhou, China

^* Corresponding author: duly6@mail2.sysu.edu.cn

Abstract

People’s need for energy is growing as science and technology advance, and finding effective ways to store and use energy has become crucial in today’s world. Due to its effectiveness, environmental friendliness, and renewable nature, lithium-ion batteries (LIBs) are now a hot topic in study. However, traditional lithium-ion battery anode is usually graphite material, energy density limitations, its theoretical specific capacity is relatively low, difficult to meet the growing demand for high energy density. Moreover, graphite anode also has the disadvantages of limited multiplication performance, low first charge/discharge efficiency, and high charge/discharge platform voltage. Silicon-based materials have great potential for application in LIBs anode due to their high energy density, low de-embedded lithium potential, abundant resources, low cost, and good electrochemical properties. As a result, the materials based on silicon in LIBs are the main topic of this research. First, this paper, summarizes the advantages and challenges of the current silicon-based materials. Then, several forms of current silicon-based anode materials exist, including: silicon-carbon composites and alloying of silicon, are explored. Finally, improvement strategies for silicon-based materials are highlighted.