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There are many raw materials used in the processing of lithium-ion battery packs, and the important components of lithium-ion battery packs include: positive electrode materials, negative electrode materials, separators, and electrolytes. Lithium ion batteries are a new generation of green high-energy batteries with excellent performance, and have become one of the focuses of high-tech development. At present, the supply of raw materials for lithium-ion battery packs is sufficient, with sufficient production of some products and fierce competition. The lithium-ion battery industry is still hot.

The overall situation of surplus production of raw materials for lithium-ion battery pack processing is that there is a shortage of high-end products in demand. Among them, positive electrode materials, negative electrode materials, and electrolytes have gradually become self-sufficient. Due to the relatively low technical barriers of negative electrode materials and electrolytes, Chinese companies have a clear cost advantage and strong competitiveness on a global scale.

1. Positive electrode material

Among positive electrode materials, the most commonly used materials are lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate, and ternary materials (nickel cobalt manganese polymers). The positive electrode material accounts for a large proportion (the mass ratio of positive and negative electrode materials is 3:1~4:1), because the performance of the positive electrode material directly affects the performance of lithium-ion batteries, and its cost directly determines the cost of the battery.

The positive electrode material of lithium-ion battery packs has a broad market and a very optimistic prospect. However, there are still certain technological bottlenecks in the positive electrode materials of lithium-ion batteries, especially the advantages of high capacitance and strong safety performance have not been fully utilized. Our company should strengthen the research and development of key technologies for positive electrode materials, gain an international leading position, enhance core competitiveness, and gain an advantage in international competition.

2. Negative electrode material

Among negative electrode materials, natural graphite and artificial graphite are currently the main types of negative electrode materials. The negative electrode materials being explored include nitrides, PAS, tin based oxides, tin alloys, nano negative electrode materials, as well as some other intermetallic compounds. As one of the four major components of lithium-ion battery packs, negative electrode materials play an important role in improving battery capacity and cycling performance, and are at the core of the lithium-ion battery industry.

3. Diaphragm

The important market-oriented diaphragm materials are polyolefin diaphragms mainly composed of polyethylene and polypropylene. In the structure of lithium-ion batteries, the separator is one of the key inner components. The performance of the separator determines the interface structure, internal resistance, and other characteristics of the battery, directly affecting its capacity, cycling, and safety performance. An excellent separator plays an important role in improving the comprehensive performance of lithium-ion battery packs.

4. Electrolyte

The electrolyte of lithium-ion batteries is the carrier for ion transport in batteries. It is generally prepared from high-purity organic solvents, electrolyte lithium salts, necessary additives, and other raw materials under certain conditions and in a certain proportion. Electrolyte plays a role in conducting ions between the positive and negative electrodes of lithium-ion battery packs, ensuring that lithium-ion batteries achieve high voltage, high specific energy, and other advantages.

Prospects for assembly and processing of lithium-ion batteries:

The application of lithium-ion battery assembly and processing market is becoming increasingly widespread, and the market share is also increasing exponentially. Regarding the current lithium-ion battery market, power lithium-ion batteries are the most widely used, with electric bicycles being the main vehicle for transportation.

Energy storage technology is a strategic support for the future transformation of energy structure and the transformation of electricity production and consumption patterns. Driven by the development and commercialization trend of energy storage technology, power lithium-ion battery packs, as one of the main players in the new energy industry, will also usher in new opportunities for development. The large-scale development of energy storage will promote the extension and integration of the lithium-ion battery assembly and processing industry chain, promote the upstream, midstream, and downstream of the power lithium-ion battery industry to connect with capital, synchronize with the market, and achieve win-win cooperation.

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