What are the star companies that produce positive and negative materials in the lithium battery industry chain?

Cathode material

Lithium battery cathode materials that have been marketed at present include lithium cobaltate, lithium manganate, lithium iron phosphate and ternary materials. The positive electrode material accounts for more than 40% of the total cost of the lithium battery , and the performance of the positive electrode material directly affects the performance indexes of the lithium battery , so the lithium battery positive electrode material occupies a core position in the lithium battery. Although lithium battery cathode materials have a broad market, the outlook is very optimistic. However, lithium battery cathode materials still have certain technical bottlenecks. Especially the advantages of high capacitance and strong safety performance have not been fully exerted.

Anode material

The negative electrode of the lithium ion battery is made by mixing a negative electrode active material carbon material or a non-carbon material, a binder and an additive to form a paste adhesive, which is evenly coated on both sides of the copper foil, and dried and rolled. Whether the lithium-ion battery can be successfully produced is the key to whether a negative electrode material capable of reversibly deintercalating/deintercalating lithium ions can be prepared. At present, the anode materials that have been practically used for lithium ion batteries are generally carbon materials such as graphite, soft carbon (such as coke, etc.), hard carbon, and the like. The anode materials being explored are nitrides, PAS, tin-based oxides, tin alloys, nano-anode materials, and other intermetallic compounds.

The choice of a good anode material should follow the following principles: high specific energy; low electrode potential relative to lithium electrode; good reversibility of charge and discharge reaction; good compatibility with electrolyte and binder; small specific surface area (<10m²/ g), high true density (>2.0g/cm³); good size and mechanical stability during lithium insertion; abundant resources, low price; stable in the air, no toxic side effects.

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