Solid-state batteries may be commercially mass-produced and installed in vehicles sooner than the market expects

Global competition for solid-state batteries

Solid-state batteries not only have high safety, high energy density, and "high and low temperature" performance is also very good, as the next generation of power battery, is the strategic high point of competition.

At present, China, Japan, South Korea, Europe and the United States and other countries and regions of solid-state best lithium ion battery machine company have clear indicators, expectations and national planning.

At present, the solid-state battery industry is generally in the research and development and pilot stage. China, Japan and South Korea are in the leading position in the field of solid-state battery development, while the governments and many enterprises in Europe and the United States hope to change the existing pattern of power and energy storage batteries through solid-state batteries.

In the realization of all-solid-state battery development route education,equipment for lithium battery assembly there are mainly polymer, oxide, sulfide three technology research routes, of which sulfide solid electrolyte due to the enterprise has a highest lithium-ion conductivity and good mechanical system performance and has become one of the most promising technology level of China's direction of the problem.

Different countries and regions have obvious preference and optimism for solid-state battery technology routes. For example, Japan and South Korea are continuing to fully develop sulfide all-solid-state batteries with virtually no oxidation routes; China is relatively unique in that it is the only country in the world that has chosen the oxide-polymer composite solid-liquid hybrid electrolyte route.

Japan, South Korea, the United States has enterprises to carry out R & D layout, however, to really realize the mass production and application, sulfide all-solid-state battery is still facing a number of key basic scientific issues and application of the development of difficult problems.

China solid state battery: semi-solid first

At present, most domestic enterprises use oxides as electrolytes to promote the development of solid-state batteries.

However, the addition of a liquid solid-state batteries, due to the enterprises to reduce the use of a solid-state electrolyte, resulting in its energy density continues to improve their own not as good as the full solid-state.

Therefore, although semi-solid-state batteries have been commercialized in China, but its energy density has not significantly improved, the conductivity is not as good as liquid lithium, oxide electrolyte materials are also higher than the price of liquid lithium, can only use semi-solid-state batteries as a transitional product.

It is worth mentioning that, in addition to the semi-solid batteries that have been mass-produced, Professor Ma of the University of Science and Technology of China recently developed a new type of solid electrolyte lithium zirconium oxychloride. Its comprehensive performance is comparable to that of the current state-of-the-art sulfide and oxide solid electrolytes, but at less than 4% of the cost of the latter, making it the latest advancement in the field of solid-state batteries in China.

However, the technology is still in the laboratory stage, and the eventual mass production, there is still a great deal of uncertainty.

The three electrolytes polymer, oxide, and sulfide currently used as the mainstream of solid-state batteries all have different degrees of hardness, resulting in small-scale mass production of solid-state batteries is not cost-effective compared to liquid batteries.

However, in the technology continues to progress as well as government guidance, research institutes to help, capital to follow up and enterprises to land under the common help, the real mass production of solid-state batteries loaded with cars, or has not far away.

solid-state batteries power battery battery technology

0