Research Progress and Optimization Strategies of Cathodes, Anodes and Electrolytes for Lithium-ion Batteries

The importance of lithium-ion batteries is becoming increasingly clear as the world's need for clean energy grows. However, the challenges of realizing their higher energy density, stability and safety remain to be overcome. This paper discusses the working principle of Li-ion batteries and the importance of their core components, then explores the research significance of cathode, anode materials and electrolytes, respectively, and describes the current mainstream materials and their current challenges and optimization strategies. In terms of positive electrode materials, this paper introduces mainstream materials such as Nickel Manganese Cobalt Oxide (NMC), Nickel Cobalt Aluminum Oxide (NCA), and Lithium Iron Phosphate (LFP), and puts forward strategies to improve energy density and enhance stability; in terms of negative electrode materials, this paper lists core materials such as graphite and silicon, and discusses the issues of volume change and how to improve stability, etc. In the electrolyte section, it not only introduces the mainstream electrolytes such as organic liquid electrolytes and solid electrolytes, but also analyzes and discusses the problems of how to improve their ionic conductivity. By synthesizing these reviews and strategies, this paper aims to promote the progress and development of lithium-ion battery technology and bring new research perspectives and values.