Farasis Energy, a Chinese battery manufacturer backed by Mercedes-Benz, announced on July 21 that it has entered the pilot production phase for its sulfide-based solid-state batteries and has begun delivering sample cells to strategic partners, according to IT-Home. The company expects to complete a pilot production line with a design capacity of 0.2 gigawatt-hours (GWh) by the end of 2025. As part of this initial rollout, Farasis will supply 60-ampere-hour sulfide solid-state battery samples to its existing partners and plans to expand deliveries to additional new energy vehicle manufacturers that have expressed interest.
Farasis projects that, based on market feedback and internal planning, it will be able to scale its all-solid-state battery production to gigawatt-hour levels in 2026. The company’s current solid-state cell design incorporates high-nickel ternary cathodes, soft-pack structures, and stacked cell architecture. These cells pair high-nickel cathodes with either high-silicon or lithium metal anodes, targeting an energy density exceeding 400 watt-hours per kilogram. Farasis reports that these cells have already entered real-world testing, demonstrating stable cycling performance.
On the safety front, Farasis states that its solid-state electrolytes have passed puncture, shear, and thermal chamber tests. The battery cells are also equipped with a self-shutdown mechanism to mitigate risks associated with thermal runaway.
In addition to its sulfide-based platform, Farasis is developing a second battery architecture based on oxide/polymer composite electrolytes. This variant also uses lithium metal anodes and high-nickel cathodes, with a target energy density of up to 500 Wh/kg. Farasis has completed the development of compatible composite electrolyte materials and introduced a proprietary process for producing ultra-thin electrolyte layers.
Founded in 2009 and listed on the Shanghai Stock Exchange Star Market in 2020, Farasis is known for its high-performance ternary soft-pack lithium-ion batteries used in electric vehicles and energy storage. The company led domestic soft-pack battery shipments from 2017 to 2023 and holds partnerships with Mercedes-Benz, Geely, Togg, and FAW. It also operates the Siro joint venture with Togg. In early 2025, the Guangzhou Municipal Government acquired control of Farasis through Guangzhou Industrial Investment Holding Group.
Source: CarNewsChina
