Ganfeng said its first-generation solid-state battery can reach an energy density of 260 Wh/kg, with a production line capable of producing 4 GWh per year.
(Image credit: Ganfeng Lithium)
China's Ganfeng Lithium -- the world's largest lithium producer by market capitalization -- said it has begun mass production of its first-generation solid-state battery, after announcing the new technology in late 2021.
Ganfeng revealed the progress in a May 19 investor conference meeting minutes, saying its first-generation solid-state batteries can reach an energy density of 260 Wh/kg and that the production line is designed to have an annual capacity of 4 GWh.
Production of the solid-state battery is currently undergoing capacity creep, with application scenarios including power batteries and energy storage, according to the minutes.
Ganfeng's second-generation hybrid solid-state lithium battery uses lithium metal as the anode and can reach an energy density of 400 Wh/kg, the company said.
The safety performance of the second-generation solid-state battery meets automotive requirements, and the cycling performance of the sample battery has met the requirements of car companies, Ganfeng said.
Ganfeng unveiled its first-generation solid-state battery, a hybrid solid-state and liquid lithium-ion battery, on December 10, 2021.
The battery has an oxide electrolyte and uses graphite for the anode. It has a diaphragm, but unlike conventional diaphragms, it uses a solid electrolyte diaphragm.
Ganfeng did not announce the energy density of the first-generation solid-state battery at the time, but said the second-generation solid-state battery had an energy density of more than 360 Wh/kg.
The company's latest announcement means that it has made new progress in the development of the second-generation solid-state battery over the past year and a half, allowing for a further increase in energy density.
Current mainstream lithium-ion battery cells have an energy density of just over 200 Wh/kg, and NIO's (NYSE: NIO) 150 kWh semi-solid-state battery, expected to be available within months, is 360 Wh/kg.
The Condensed Battery will be available for use in electric vehicles and will have mass production capability within this year, said Wu Kai, CATL's chief scientist at the time.