Analysis of methods to increase the capacity of lithium batteries

Ways to increase the capacity of lithium batteries Lithium batteries.jpg ●By using silicon anode materials, the capacity of lithium batteries can be effectively increased. The specific capacity of pure Si can reach 4200mAh/g (Li4.4Si) in the state of fully intercalating lithium, but it is also accompanied by a volume expansion of up to 300%, which will cause particle rupture and differentiation of pure silicon materials during the lithium intercalation process. , The negative electrode falls off, which leads to serious capacity decline during the material cycle. ●Use materials with a smaller rebound thickness: After the lithium battery is cycled, the thickness will rebound to a certain extent; the rebound thickness after the cycle should be reserved in the design; and when the material with a smaller rebound thickness is used, it can be omitted The reserved space for thickness rebound is transferred to the design thickness of the cell, thereby increasing the design capacity of the cell. ●Lithium batteries can be connected in parallel to increase the capacity. In other words, by connecting the positive electrode of the battery to the positive electrode of other batteries and the negative electrode to the negative electrode of other batteries, the battery capacity can be increased without changing the output voltage of the battery pack. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How does the factory choose lithium battery UPS?