What are the functions of the major raw materials of battery cells and what are their representative companies?

In the previous article, we talked about the main components of the battery cell. This article will continue the above content and talk about which Chinese representative companies have each raw material, and what role each raw material plays in the battery cell.

Cathode:

Representative companies: Rongbai Technology/Dangsheng Technology/Defang Nano

Function: Determines the energy density ratio, power density ratio and cycle life of the battery

Anode:

Representative companies: B&T/Putailai/Shanshan Co., Ltd.

Function: During the charging and discharging process, it is the carrier of lithium ions and electrons, and plays the role of energy storage and release

Electrolyte:

Representative companies: Tianci Materials/Xinzhoubang/Zhuhai Saiwei/Yuneng/Duofuduo

Function: Prevent short circuit between positive and negative electrodes, and determine the key parameters such as high and low temperature use environment, cycle life and safety performance of the battery

Seperator:

Representative companies: Enjie Co., Ltd./Xingyuan Materials/Sinoma Technology

Function: Determines the key parameters such as battery capacity, cycle life and safety performance

Copper foil (Anode current collector) ：

Representative companies: Nord Co., Ltd./Defu Technology/Longdian Huaxin/Tongguan Copper Foil/Zhongyi Technology/Jiayuan Technology

Function: Mainly conductive, copper foil is the core material of the anode current collector of lithium batteries. It not only acts as a carrier of the anode active material of the electrode in the battery, but also plays a role in collecting and transmitting current, which has a great impact on the internal resistance and cycle life performance of lithium-ion batteries

Aluminum foil (Cathode current collector):

Representative companies: Dingsheng New Materials/Wanshun New Materials/Tianshan Aluminum/Shenhuo Co., Ltd./Nanshan Aluminum

Function: Mainly conductive, aluminum foil is the core material of the cathode current collector of lithium batteries. It not only acts as a carrier of the anode active material of the electrode in the battery, but also plays a role in collecting and transmitting current, which has a great impact on the internal resistance and cycle life performance of lithium-ion batteries