Briefly describes seven Japanese lithium battery technology

Despite the proportion of lithium electricity markets around the world, Japan is in decline, but Japan has always been firmly occupy the lithium electricity high-end market dominant position, its lithium-ion battery technology is also an indicator of the whole industry.

First, Overview of the technical route of Japanese lithium battery companies

Second, each enterprise technical route for details

1, Panasonic, Sanyo electric

The anode material

Research and development of a solid solution cathode material in which lithium manganate is doped with elements such as nickel and aluminum, and this is used as a positive electrode material for a battery. At present, the positive electrode materials that have been developed include lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminate, etc., and have been used in large-scale applications.

In addition, in order to solve the problems of low thermal stability and safety of nickel oxide, nano-coating treatment was performed on the surface of the positive electrode material.

Anode materials

At present the main use of carbon materials, but at the same time in silicon alloy anode materials, positive development and application has been partial implementation.

2、NEC-AESC

By doping nickel, aluminum and other elements to improve the low energy density of the lithium manganate material, the actual route is similar to Panasonic. However, NEC seems to be more daring and developing specific capacity double drill of nickel alloy material to replace manganese material.

At present, the application of this new positive electrode material has solved the problem of battery durability. NEC is actively developing electrode materials for power lithium batteries, and has been applied.

3, Hitachi

Anode materials

There are currently two routes for the development of Hitachi anode materials:

1. Improve on the basis of carbon materials;

2. Development of a mixture of silicon alloy material and carbon material SiO-C.

At the same time, a new type of copper foil with high elastic limit stress and excellent processing properties was developed as an electrode material.

The diaphragm

In terms of the diaphragm, has developed the 200 ℃ high temperature resistant ceramic membrane material, is made in the ordinary course of Polyolefin (Polyolefin) porous membrane coated plate of inorganic particles, the diaphragm materials have implemented application at present.

4, Toshiba

Toshiba mainly increases the energy density of the battery by increasing the particle density of the positive electrode material. To optimize the performance of the manganese-titanium battery, Toshiba uses a higher-burning electrolyte and a separator with excellent heat resistance.

5, when the resistance of

Ying Nai has firmly adhered to the lithium manganate route, and its lithium battery technology level is among the leading companies in all Japanese companies. At present, the product data of the power battery provided by Ying Nai is good, but it also needs to be inspected by mass production.

6, GS Yuasa

GS Yuasa in manganese acid lithium and lithium iron phosphate on the two routes are actively, the main products are EH6 of manganese acid lithium, LEV50, the main products of the lithium iron phosphate has LEV25, LIM40.

7, SONY

SONY's development lithium iron phosphate batteries at the same time, also in the positive development of cobalt acid lithium + tin base alloy power battery. SONY is on the surface of the particles that cobalt acid lithium materials "for 0.1 ~ 1 PM thick coated processing", the anode materials by cobalt acid mixture of tantalum and ternary material, using the ceramic diaphragm improve security at the same time.

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