The most important of polymer lithium-ion batteries are four major materials: positive electrode material, negative electrode material, separator, and electrolyte.

In recent years, policies related to polymer lithium-ion batteries have been introduced successively to promote the establishment of upstream and downstream companies in the industry like mushrooms. Cathode materials account for more than 40% of the total cost of polymer lithium ion batteries, and the performance of the cathode material directly affects the performance indicators of polymer lithium ion batteries, so from the four main materials, lithium battery cathode materials It occupies a core position in polymer lithium-ion batteries.

Among the cathode materials, the most commonly used materials are lithium cobaltate, lithium manganate,polymer lithium-ion batteries lithium iron phosphate and ternary materials (a polymer of nickel, cobalt and manganese). Cathode materials occupies a large proportion, because the performance of the cathode material directly affects the performance of polymer lithium-ion batteries, and its cost directly determines the cost of the battery.

Among the anode materials, the current anode materials are mainly natural graphite and artificial graphite. The anode materials being explored include nitrides, PAS, tin-based oxides, tin alloys, nano-anode materials, and other intermetallic compounds. As one of the four major components of polymer lithium-ion batteries, anode materials play an important role in improving battery capacity and cycle performance, and are at the core of the polymer lithium-ion battery industry.

Among the diaphragm materials, the diaphragm material is a polyolefin diaphragm mainly composed of polyethylene and polypropylene.polymer lithium-ion batteries In the structure of polymer lithium-ion batteries, the diaphragm is one of the key internal components. The performance of the diaphragm determines the interface structure and internal resistance of the battery, which directly affects the capacity, cycle and safety performance of the battery. A diaphragm with excellent performance has an important purpose for improving the overall performance of the battery.

Among the electrolyte materials, the main components of the electrolyte are ethylene carbonate, propylene carbonate, diethyl carbonate, dimethyl carbonate, ethyl methyl carbonate, lithium hexafluorophosphate, phosphorus pentafluoride, and hydrofluoric acid. Electrolyte is the medium used by chemical batteries, electrolytic capacitors, etc. (with certain corrosiveness), which provides ions for their normal work and ensures that the chemical reaction that occurs during work is reversible.

In addition, more auxiliary materials, such as copper foil and aluminum foil, are needed in polymer lithium-ion batteries  the production process of lithium batteries. Shell (aluminum shell, steel shell, etc.), cover plate, protective plate, sticker packaging, etc. Some batteries also need to use aluminum plastic film and so on.