What types of anode materials for lithium batteries?

Types of lithium battery anode materials 1. The most typical embedded anode materials are carbon materials, which can usually be divided into soft carbon, hard carbon and graphite. Graphite materials have good conductivity, high crystallinity, and stable charging and discharging platforms. They are currently the most commercialized anode materials for lithium batteries; hard carbon materials have a higher discharge capacity than graphite, due to low cycle efficiency and varying voltage Large changes in capacity, lack of a stable discharge platform, hard carbon as a negative electrode material, application has been limited. 2. Alloyed anode materials Alloyed lithium storage materials refer to metals and their alloys, mesophase compounds and composites that can undergo alloying reactions with lithium. The theoretical specific capacity and charge density of alloyed anode materials are much higher than that of embedded anode materials. At the same time, this type of material has a high lithium insertion potential, and it is difficult to deposit lithium in the case of high current charging and discharging, and no lithium dendrites will cause battery short circuit, which is of great significance for high-power devices. 3. In the past, this type of material was not favored for conversion-type anode materials, because there was no place for lithium ion insertion and extraction in the space structure, which did not conform to the traditional lithium ion insertion and extraction mechanism, and the reaction with lithium at room temperature was considered It is irreversible. It was not until several transition metal oxides were found to have high reversible discharge capacity that this material gradually attracted the attention of researchers. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it.