Domestic companies are actively developing all-solid-state lithium batteries

by:CTECHi     2021-08-11

In order to seize the opportunity in the new energy field in the future, domestic companies are also actively developing all-solid-state lithium batteries, of which five companies are the most prominent, namely: Ningde Times, Qingtao Energy, Jiawei Co., Ltd., Ganfeng Lithium Industry, Beijing Weilan.

Ningde Times

Ningde Times has determined its own development direction after investigating global solid-state battery companies. In October 2016, Dr. Liu Na of CATL New Energy introduced CATL’s layout and Ru0026D path in the fields of polymer solid-state lithium metal batteries and sulfide solid-state batteries.

The entire manufacturing process of solid-state batteries is different from the traditional lithium-ion manufacturing process and requires new equipment and new processes. During the research and development of solid-state batteries, CATL also paid attention to the manufacturing issues of solid-state batteries, so it also carried out process research and development at the same time.

Qingtao Energy

On November 19, 2018, Qingtao (Kunshan) Energy Development Co., Ltd. announced that The country's first solid-state lithium battery production line built by it was officially put into operation in November. This production line with a total investment of 100 million yuan has a production capacity of 0.1GWh. The first batch of solid-state battery products has been mass-produced, and it can currently produce 10,000 cells per day. However, mass-produced solid-state batteries cannot yet be used in electric vehicles, and are mainly used in special safety fields.

Qingtao Energy was established in 2014 by the team of Nan Cewen, an academician of the Chinese Academy of Sciences and the dean of the Institute of Materials Science and Engineering of Tsinghua University. The Qingtao team is a pioneer in the development of all-solid-state lithium batteries in China. Through the original development of key materials for lithium batteries, the innovative design of equipment, and the optimization of mass production processes, they have taken the lead in realizing the industrialization of solid-state lithium batteries and built a complete independent knowledge. Property rights system. Qingtao developed solid-state battery products with high safety, high energy density, and flexibility, and the energy density can reach more than 400Wh/kg.

Jiawei shares

As early as November 2016, Jiawei shares held the world’s first 'solid-state 'Lithium battery and fast-charge lithium battery product launch conference

According to Jiawei shares, their solid-state lithium batteries are used in electric vehicles. The fast charge can reach 97% in 15 minutes, and the cycle life is more than 7000 times. Up to 400 kilometers or more, which means that Jiawei's solid-state lithium battery can run more than 2.8 million kilometers.

Jiawei shares stated that the company will vigorously develop fast-charging, high-safety and long-life composite nano-material-like solid-state batteries, further strengthen capacity construction, and comprehensively expand passenger vehicles and logistics Automobile and commercial vehicle customers should expand and strengthen their lithium battery business as soon as possible.

Ganfeng Lithium Industry

In 2017, Ganfeng Lithium officially entered the In the solid-state battery sector, the laboratory's technology has made breakthroughs. It plans to invest 250 million yuan to build a pilot production line with a scale of more than 100 million watt-hours. The 600 million watt-hour power battery production line will focus on matching with solid-state batteries in the future.

On June 30, 2018, the technical indicators of the first-generation solid-state lithium battery reached: a single capacity of 10Ah, an energy density of not less than 240Wh/kg, and a capacity after 1000 cycles The retention rate is greater than 90%, the battery cell has a 5C rate of charge and discharge capability, and the battery research and development products have passed the safety inspection of a third-party organization.

Beijing Weilan

Beijing Weilan New Energy Technology Co., Ltd. was established in 2016 and is a company focused on the next generation A high-tech enterprise engaged in the research and development and production of all-solid-state batteries is one of the few battery companies in China that has core patents and technologies for all-solid-state batteries. The company focuses on hybrid solid-liquid electrolyte batteries and all-solid-state battery products with high energy density, high safety, high power and wide temperature range adaptability. The product applications cover drones, power tools, large-scale energy storage, electric vehicles and other fields. Beijing Weilan’s development concept is to advance hybrid solid-liquid electrolyte batteries to oxide-polymer composite all-solid-state lithium batteries, while being able to cycle at low temperatures and 90°C, taking into account both rate and safety.

Some analysts claim that quasi-solid-state lithium batteries will be industrialized in 2020, and all-solid-state lithium batteries will finally be industrialized by 2025. According to statistics, there are more than 50 manufacturing companies, start-up companies, and scientific research institutes in universities around the world dedicated to solid-state battery technology. Leading foreign companies in this field include Bollore of France, Sakit3 of the United States, and Toyota of Japan. In 2015, France launched 3,000 shared electric vehicles using solid-state lithium batteries. The solid-state lithium batteries used were produced by French battery manufacturer Bollore. However, such batteries have not yet been commercialized on a large scale.

In addition, domestic companies such as BYD, Guoxuan High-tech, Zhongtian Technology, Dangsheng Technology, Yiwei Lithium Energy, Hengdian Dongci, Guojia Interstellar and other enterprises have also deployed Solid state battery. In order to gain a leading edge in the electric vehicle market in the future, all countries are stepping up the deployment of all-solid-state lithium batteries, striving to have the dominant power in technological competition.

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