[China's research and development of new lithium battery cathode materials can improve fast charging efficiency and durability] On October 2, the scientific research team of the Shenyang National Research Center for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, proposed a new strategy for cathode material design based on the laws of physical and chemical interactions of trace elements, promoting the exploration of cathode materials from "experience trial and error" to "goal-oriented". The relevant results were published in the international academic journal "Nature·Synthesis" on October 1. In response to the two problems of "lithium ions run slowly" and "the material structure is unstable", the scientific research team proposed a more targeted element screening method based on the underlying physical and chemical mechanisms: one type of elements is responsible for making lithium ions run more smoothly, and the other type of elements is responsible for making the material structure stronger. These two effects are closely related to the ionic charge density and metal-oxygen bonding strength of the element respectively. Elements with lower charge density can reduce the obstacles encountered during the migration of lithium ions, making it easier for lithium ions to move quickly in the material; elements that combine more firmly with oxygen can enhance the stability of the crystal skeleton, making the material less likely to undergo structural damage during repeated charge and discharge processes.