A few days ago, Penghui Energy announced that its solid-state battery technology is still in the research and development stage, with plans to launch commercial products within the next 2-3 years. Meanwhile, Yu Feng Li also made a recent announcement, stating that the company intends to establish a wholly-owned subsidiary called Zhejiang Feng Lithium New Energy Technology Co., Ltd., and will invest RMB 250 million of its own funds to build the first-generation solid-state battery R&D pilot line. It's clear that the era of solid-state batteries is fast approaching, and many companies are racing to get ahead in this promising field.
Compared to traditional liquid lithium-ion batteries, solid-state batteries offer higher energy density, better cycle life, improved safety, and faster charging times. Despite the technical challenges that remain, and the fact that mass production is still some time away, solid-state battery technology—often referred to as the "next generation of lithium-ion battery technology"—has captured the attention of numerous domestic and international companies.
Since 2015, major players like British entrepreneur James Dyson and German automotive supplier Bosch have been investing heavily in solid-state battery startups. Dyson acquired SaKti3 and Seeo, and later invested $1.4 billion to build a factory for mass-producing solid-state batteries. Bosch, too, has been active, acquiring Seeo and partnering with GSYUASA Battery Company and Mitsubishi Heavy Industries to create a new facility focused on solid-state anode lithium-ion batteries. BMW is also working on a solid-state battery using a solid electrolyte, with plans for mass production by 2026.
Toyota has been one of the most enthusiastic supporters of solid-state battery technology. Recently, Toyota announced that its solid-state batteries could significantly increase the range of electric vehicles and reduce charging times. The company aims to launch these vehicles in 2022. Additionally, when looking at patent filings related to solid-state batteries, it's evident that Toyota holds a large number of key patents in this area.
Several Chinese institutions, including Ningbo University, China University of Science and Technology, Huawei Technologies, China Electronics 18th Institute, and the Chinese Academy of Sciences, rank among the top ten in solid-state battery-related patents. This highlights the growing interest and investment in this field across China.
According to the Ministry of Science and Technology’s roadmap for power battery development and the “Made in China 2025†initiative, China aims to develop and produce solid-state batteries with monomer energy densities between 300Wh/kg and 400Wh/kg from 2020 to 2025. With 2018 already underway, and considering the time required for construction, the domestic solid-state battery era is no longer far off.
Beyond Penghui Energy and Yu Feng Lithium, many other Chinese companies have also started positioning themselves in the solid-state battery market. For example, Contemporary Amperex Technology (CATL) is accelerating the development of EV solid-state lithium-metal sulfide batteries. Lishen Battery also unveiled new technologies in November 2017. Qin Xingcai, vice chairman of China Power God and party secretary of Tianjin Lishen Battery, outlined a chemical route plan for lithium batteries, with the goal of achieving mass production of solid-state batteries around 2023. Other companies, such as Universal Solar Energy and Henan Lithium Power Supply, have also begun investing in solid-state battery projects.
Miao Lixiao, General Manager of the R&D Department at Thornton New Energy Technology Co., Ltd., noted that while small-scale solid-state batteries are already being produced in some regions, large-scale production still faces significant challenges. While lithium-sulfur and lithium-air batteries fall into similar technological categories, Miao remains optimistic, believing that through continued research and innovation, the era of high-energy-density next-generation batteries is just around the corner.
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