What is the cause of the power lithium battery self-discharge

What is the cause of the power lithium battery self-discharge, self-discharge why lithium battery? What is the cause of the self-discharge? Do you know? About the cause of the lithium battery self-discharge we listen to the guangdong lithium battery manufacturer is how to say! 1 the anode materials are positive influence is mainly positive transition metal precipitation and impurities in the cathode lead to internal short circuit, thereby increasing the self-discharge of lithium-ion batteries. 是的, Mei Teng et al. studied the physical and electrochemical properties of two kinds of LiFePO4 battery anode materials. Study found in raw materials as well as the middle pig iron high impurity content of battery charging and discharging process its high self-discharge rate, poor stability, the reason is that iron reduction precipitation gradually in the cathode, puncture the diaphragm, which caused a short circuit in the battery, resulting in high self-discharge. 2 anode materials anode materials for self-discharge is mainly due to the influence of anode materials and electrolyte irreversible reaction. As early as 2003, Aurbach et al. proposed the reduction of electrolyte and release the gas, make graphite parts surface exposure in the electrolyte. Embedded in the process of charging and discharging, lithium ion and emergence, graphite layers easily destroyed, resulting in larger self-discharge rate. Three main performance is: the influence of electrolyte electrolyte electrolyte or impurities on the surface of the cathode corrosion; Electrode materials dissolved in the electrolyte; Electrodes were electrolyte decomposition of insoluble solid or gas cover, form a passivation layer, etc. At present, a large number of researchers dedicated to the development of new additives to control the influence of electrolyte on the self-discharge. Jun Liu, and others MCN111 battery electrolyte additive such as adding VEC, found the battery high temperature cycle performance improvement, lower self-discharge rate. The reason is that these additives can improve the SEI film, thus protecting the battery cathode. The influence factors of 4 storage storage state general for storage temperature and battery SOC. The higher the temperature, the higher the SOC, the greater the self-discharge of the battery. Takashi waiting in the quiet place for lithium iron phosphate battery capacity attenuation under the condition of experiment. Results show that with the rise of temperature, retention capacity with dwindling on time, the battery self-discharge rate to rise. Yun-jian liu et al. , the commercialization of manganese acid lithium power battery, it is found that with increasing battery charged state, the positive relative potential is higher and higher, its oxidizing is becoming more and more strong; Relative potential of the cathode is more and more low, the reducibility is becoming more and more strong, both can accelerate Mn precipitation, which resulted in increased self-discharge rate. Five other factors affected by many factors of battery self-discharge rate, besides the above several, mainly there are the following aspects: in the process of production, cutting a little while the burr, due to the production environment and the introduction of impurities in the battery, such as dust, on the sheet metal powder, etc. , all these may cause battery of internal short circuit; External environment humidity, external line insulation, such as incomplete and poor battery shell isolation caused by the battery storage has an external electronic circuits, which can lead to self-discharge; For a long time storage process, the electrode material and active materials of adhesive failure, leading to loss of active material and stripping, leading to a less capacity self-discharge increase above each factor or a combination of multiple factors can cause the self-discharge behavior of lithium batteries, find the reasons for the self-discharge and estimate the battery storage performance. Focusing on our lithium battery manufacturer can realize more knowledge!