Greater Bay Technology, backed by GAC Group, announced the roll-out of its first A-sample all-solid-state battery cells, marking a significant step toward mass production of next-generation batteries. The Guangzhou-based manufacturer said its composite electrolyte design has moved successfully from lab to pilot production, laying the groundwork for large-scale output.
The new cells eliminate liquid electrolytes and passed nail penetration, crushing, and thermal-shock tests without fire or explosion, addressing thermal runaway risks associated with traditional lithium-ion designs. Company data indicates energy densities ranging from 260 Wh/kg to 500 Wh/kg—well above most commercial liquid-electrolyte batteries—and support fast charging at 2C to 3C, potentially overcoming a key barrier to solid-state battery commercialization.
Greater Bay’s deep eutectic-based composite electrolyte system employs multiple materials to enhance ionic conductivity and structural stability. This approach aims to balance performance, manufacturing yield, and cost, differentiating it from semi-solid or quasi-solid-state alternatives. According to the company, production yield and consistency have already reached automotive-grade standards at its Nansha facility in Guangzhou.
With more than 50 patent applications filed in areas such as electrolyte materials and cell manufacturing, Greater Bay is preparing to scale from pilot processes to gigawatt-hour-level output in 2026, aligning with industry forecasts for solid-state battery commercialization between 2026 and 2027. The company plans to integrate the cells into electric vehicles later this year.
Globally, solid-state battery development remains divided among various material routes—including sulfide, oxide, and polymer systems—all of which face challenges related to ionic conductivity and manufacturing complexity. In March, Greater Bay reported installation volumes of 0.21 GWh in China, accounting for a 0.37% share of national battery capacity and ranking 15th, according to the China Automotive Battery Innovation Alliance.
Source: China News EV Post
