What are the acquired factors that affect the self-discharge rate of lithium-ion battery?

Acquired factors that affect the self-discharge rate of lithium-powered lithium-ion batteries The self-discharge rate of lithium-powered lithium-ion batteries varies in different use environments, application states, and life stages. 1) Temperature. The higher the ambient temperature, the higher the activity of the electrochemical materials of the lithium-powered lithium-ion battery, and the more intense the side reactions involved in the positive electrode material, negative electrode material, and electrolyte of the lithium-powered lithium-ion battery. In the same period of time, Cause more capacity loss. The chemical self-discharge of lithium-powered lithium-ion batteries is more significant at high temperatures, and it is more effective to use high-temperature storage to judge the self-discharge of lithium-powered lithium-ion batteries. 2) External short circuit. For open-circuit lithium-powered lithium-ion batteries, the external short circuit is mainly affected by the degree of air pollution and air humidity. Lithium-powered lithium-ion batteries will strictly require the laboratory environment and humidity range when conducting self-discharge characteristics test experiments, which is the reason. High air humidity will lead to an increase in conductivity, and air pollution importantly refers to the possibility of conductive particles in pollutants, which will increase the conductivity of the air. 3) The amount of charge. By comparing the impact of lithium-power lithium-ion battery charge on self-discharge rate, the general trend is that the higher the charge of lithium-power lithium-ion battery, the higher the self-discharge rate. That is, the higher the charge of the lithium-ion battery, the higher the positive electrode potential and the lower the negative electrode potential. In this way, the stronger the oxidation of the positive electrode and the stronger the reduction of the negative electrode, the more intense the side reaction. 4) Time. Lithium-powered lithium-ion batteries have the same power and capacity loss efficiency, the longer the time, the more power and capacity they lose. However, the self-discharge performance is generally used as an indicator for comparing different lithium-power lithium-ion battery cells, that is, under the same preconditions and at the same time, to compare, so the purpose of time can only be said to affect the self-discharge. The physical micro-short circuit of lithium-power lithium-ion batteries has an obvious relationship with time, and long-term storage is more effective in determining physical self-discharge. 5) Loop. Cycles will cause the internal micro-short-circuit melting of the lithium-powered lithium-ion battery, thereby reducing the physical self-discharge. Therefore: if the self-discharge of the lithium-powered lithium-ion battery is mainly physical self-discharge, the self-discharge after the cycle will be significantly reduced; if the lithium-powered lithium The self-discharge of ion batteries is dominated by chemical self-discharge, and there is no obvious change in self-discharge after cycling. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.