GAC Group Details All-Solid-State Battery Technology, Plans Production Vehicles in 2026
GAC Group explains how all-solid-state batteries differ from conventional lithium-ion cells and announces plans to introduce the technology in production vehicles under its Hyper brand this year.
- over 400 Wh/kg
- over 1,000 km
- above 60 Ah
- over 35%
What Happened
An all-solid-state battery (ASSB) replaces the liquid or gel electrolyte in conventional lithium-ion cells with a solid material such as ceramics, glass, polymers, or sulfide-based compounds. This fundamental change improves safety by eliminating flammable liquids, prevents leakage and gas formation, and suppresses dendrite growth that can cause short circuits. Solid electrolytes also enable higher energy density by allowing lithium metal anodes, thinner separators, and more compact cell designs.
- High (organic solvents) vs. Low to none
- Yes vs. No
- Moderate vs. High
Despite the promise, mass-producing all-solid-state batteries remains challenging. Manufacturing requires high precision and processes are still maturing. Materials like sulfide-based compounds and lithium metal are expensive. Interface stability between solid electrolyte and electrodes can degrade over time, a research challenge that requires sustained investment.
over 400 Wh/kg
GAC's third-generation sponge silicon anodes (4x reversible capacity of graphite) and high areal-capacity cathodes enable over 1,000 km range.
- Full-process production unlocked: dry electrode, thin electrolyte transfer, in-situ interface fusion
- Reduces equipment investment by 15%
- Reduces factory space by 40%
- Reduces costs by over 35% at scale
GAC has been researching solid-state batteries since 2014. In 2025, the company moved all its solid-state batteries from laboratory to pilot production, with automotive-grade cells achieving capacities above 60 Ah. GAC plans to introduce solid-state battery EV technology in production vehicles this year, starting with models under its premium Hyper brand.
Why this matters
All-solid-state batteries promise longer range, faster charging, improved safety, and longer life for electric vehicles. GAC's breakthrough, including over 400 Wh/kg energy density and intrinsic safety, could help overcome key barriers to EV adoption, potentially benefiting drivers worldwide. The company plans to launch the technology in its premium Hyper models in 2026.
Terms in This Story
- All-solid-state battery (ASSB)
- A rechargeable battery that uses a solid electrolyte instead of a liquid or gel, improving safety and energy density.
- Electrolyte
- The medium in a battery that allows ions to move between the anode and cathode during charging and discharging.
- Energy density
- The amount of energy a battery can store relative to its weight or volume, measured in Wh/kg or Wh/L.
- Thermal runaway
- A chain reaction in batteries where overheating causes cell failure, potentially leading to fire or explosion.
Summarised from the linked release; details can be imperfect — always verify against the original source.