Anode material of lithium battery

Abstract

The invention discloses an anode material of a lithium battery. The anode material is prepared from the following components in percent by mass: 62-80% of an anode active substance, 5-10% of a binder,5-12% of a conductive agent, 3-6% of a conductive enhancer, 0.2-1% of a dispersant, 1-3% of an auxiliary agent and 2-6% of a mixed solvent, wherein the mixed solvent is a mixture of N,N-dimethylacetamide, dimethyl sulfoxide, tetramethylurea, trimethyl phosphate, dimethylformamide and water. According to the anode material disclosed by the invention, the lithium battery is excellent in high temperature performance, high in capacity retention ratio, good in circulating performance and long in service life.

Description

technical field

[0001] The invention belongs to the technical field of lithium batteries, and in particular relates to a lithium battery cathode material. Background technique

[0002] With the wide application and rapid development of lithium batteries, people have higher and higher performance requirements for lithium-ion batteries, which not only require lithium batteries to have a higher capacity, but also require better capacity retention during repeated charging and discharging. rate, exhibits good cycle performance, and has a long service life.

[0003] In order to increase the battery capacity, there are usually two methods, one is to increase the specific capacity of the electrode active material, and the other is to increase the proportion of the electrode active material in the positive electrode material, while reducing the content of other substances such as binders and conductive agents. Since the specific capacity of the positive electrode active material is ...