Ganfeng Lithium's 650 Wh/kg hybrid battery redefines energy storage limits

Gangfeng Lithium has developed a new solid-liquid hybrid battery with energy densities reaching up to 650 Wh/kg. The technology uses advanced materials to improve performance, including lithium metal anodes and multi-element alloys. While the batteries are already in use outside the automotive sector, the company is now pushing toward all-solid-state solutions.

Founded in 2000, Gangfeng Lithium entered the electric vehicle market in 2017 by supplying batteries for passenger cars. Its latest breakthrough involves a lithium hybrid solid-liquid battery, combining high-performance electrodes with lithium metal anodes. These materials boost energy density while maintaining low potential and high capacity.

The company's multi-element alloy technology tackles a key challenge in battery development: lithium dendrite growth. By suppressing these formations, the battery achieves a critical current density of 50 mA/cm² and an areal capacity of 1 mAh/cm². Another innovation, the 'zero-strain' lithium alloy anode paired with a sulfur cathode, limits volume expansion to just 3%–5% during charging and discharging. This design also passes extreme safety tests, including penetration and heating up to 250°C.

Gangfeng Lithium has already begun mass-producing solid-liquid-state batteries with an energy density of 650 Wh/kg. Meanwhile, its all-solid-state battery packs, featuring lithium alloy anodes, remain in the sample production phase. The company has signed memorandums of understanding with Changan Automobile in 2023 and Hyundai in 2024. However, no concrete supply contracts or series production deals for its hybrid battery technology have been announced with automakers so far.

Gangfeng Lithium's hybrid battery technology is currently applied in non-automotive fields, with energy densities ranging from 400 to 650 Wh/kg. The company's progress in solid-liquid and all-solid-state batteries suggests potential future applications in electric vehicles. For now, its partnerships with carmakers remain at the memorandum stage, without confirmed production agreements.