Improving the energy density of batteries (limited to capacity batteries) is the first priority in designing batteries. If the capacity is not enough, no matter how low the unit price is, how good the cycle is, and how high the safety is, the battery that is made may not be interested. So how can we improve the energy density of the battery? It can be considered from several aspects:(Lithium - Ion Battery Equipment) 1. Increase the performance of materials that contribute to battery capacity; 2. Reduce the