Solid-state lithium batteries are expected to become dominant power batteries

With the rapid development of new energy automobile market, the demand for power batteries is increasing. In this context, a number of listed companies have accelerated the layout of solid-state lithium batteries. Industry insiders say that solid-state batteries have longer range because of their high energy density. With the improvement of comprehensive technical indicators such as cyclicity and safety, the application market of solid-state batteries will gradually expand.

Have many advantages

Ganfeng lithium industry said that extensive testing of solid-state batteries was being carried out, and a research and development center and a test production line were set up in Ningbo to speed up the commercialization of solid-state lithium battery technology. At present, the company's solid-state lithium batteries are still in the experimental stage, but have passed a number of third-party safety tests.

On March 18, Fujian Bidding and Purchasing Group invested in the construction of monomer high-capacity solid-state polymer power lithium-ion batteries phase I project officially put into production. This power lithium-ion battery has passed the authoritative test recently. The 10.5-meter pure electric bus carrying the power lithium-ion battery pack was tested last month. The single charge can run more than 410 kilometers safely.

Power battery is the key component of new energy vehicle. According to the requirements of "Road Map of Energy Conservation and New Energy Vehicle Technology", the energy density target of pure electric vehicle power battery is 300 Wh/kg by 2020, 400 Wh/kg by 2025 and 500 Wh/kg by 2030.

Compared with liquid lithium-ion batteries, solid-state lithium-ion batteries have the advantages of good safety, high energy density and long cycle life. Chen Liquan, academician of the Chinese Academy of Engineering, said earlier that "in order to further improve the energy density, it is necessary to consider all-solid-state lithium batteries. The medium-term and long-term development of the electric vehicle industry needs technical reserves, and all-solid-state lithium batteries are expected to become the leading technology route for the next generation of vehicle power batteries.

Active Distribution of Listed Companies

From the current situation, BYD, Zhongtian Technology and other enterprises have carried out layout in the field of solid-state lithium batteries.

In December 2017, Ganfeng Lithium Industry announced that it planned to invest no more than 250 million yuan to build the first generation of solid-state lithium battery R&D pilot production line. According to the plan, in December 2018, the first generation solid-state lithium battery production line will deliver samples; in December 2019, 300 million yuan will be sold, and the second generation solid-state lithium battery technology is mature.

In November 2017, Yicheng Xinneng announced that it planned to buy 70% of Henan Pingmei Guoneng for 70 million yuan and enter into the lithium battery manufacturing sector. Pingdingshan Guoneng's 10GWh high specific energy lithium-ion battery project has invested 5 billion yuan.

Industry insiders believe that solid-state batteries are expected to solve the problem of low energy density and improve the safety of batteries. It is expected that all-solid-state lithium secondary batteries will enter the terminal market in 2020. With the improvement of comprehensive technical indicators such as cyclicity, rate, high and low temperature, safety and so on, the application of solid-state batteries in electric vehicle market will gradually expand.

The page contains the contents of the machine translation.