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release time:2024-09-24 Hits: Popular:AG11 battery
Inventory of the technical routes of Japan's seven major rechargeable button cell battery cr2025 companies
Details of the technical routes of each company
1. Panasonic-Sanyo Electric
Cathode materials
Research and develop solid solution cathode materials of lithium manganese oxide doped with nickel, aluminum and other elements as cathode materials for batteries. At present, the cathode materials that have been developed include nickel cobalt manganese oxide, nickel cobalt aluminum oxide, etc., and have been applied on a large scale.
In addition, in order to solve the problems of low thermal stability and safety caused by nickel oxide, nano-coating treatment is performed on the surface of the cathode material.
Negative electrode materials
Currently, carbon materials are mainly used, but at the same time, silicon alloy cathode materials are actively developed, and some applications have been realized.
2. NEC-AESC
By doping with nickel, aluminum and other elements to improve the low energy density of lithium manganese oxide materials, the route is actually similar to Panasonic. However, NEC seems to be more bold and is developing nickel-cobalt alloy materials with twice the capacity to replace manganese materials.
At present, the application of this new cathode material has solved the problem of battery durability. NEC is actively developing electrode materials for power lithium-ion batteries, which have been put into use.
3. Hitachi
Negative electrode materials
There are currently two routes for the development of Hitachi's negative electrode materials:
1. Improvement based on carbon materials;
2. Developing a mixture of silicon alloy materials and carbon materials SiO-C.
At the same time, a new type of copper foil with high elastic limit stress and excellent processing performance is developed as an electrode material.
Diaphragm
In terms of diaphragms, a ceramic diaphragm material that can withstand high temperatures of 200°C has been developed. It is a porous membrane made of ordinary polyolefins coated with plate-shaped inorganic microparticles. Currently, this diaphragm material has been put into use.
4. Toshiba
Toshiba mainly improves the energy density of the battery by increasing the particle density of the positive electrode material. In order to optimize the performance of manganese-titanium batteries, Toshiba uses an electrolyte with a high ignition point and a diaphragm with excellent heat resistance.
5. Ines
Ines firmly follows the lithium manganese oxide route, and its lithium-ion battery technology level is in the leading ranks among all Japanese companies. At present, the product data of power lithium batteries supplied by Innersys are good, but they still need to be tested in mass production.
6. GS Yuasa
GS Yuasa is actively advancing in both lithium manganese oxide and lithium iron phosphate. The important products of lithium manganese oxide are EH6 and LEV50, and the important products of lithium iron phosphate are LEV25 and LIM40.
7. Sony
While developing lithium iron phosphate lithium-ion batteries, Sony is also actively developing power lithium batteries made of lithium cobalt oxide + tin-based alloy materials. Sony's method is to "carry out a 0.1~1pm thick coating treatment" on the surface of the particles of the lithium cobalt oxide material. The positive electrode material is a mixture of tantalum cobalt oxide and ternary materials, and a ceramic diaphragm is used to improve safety.
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