GAC AION announces new breakthrough in R&D of solid-state battery technologies

Shanghai (Gasgoo)- In a press conference held by GAC Group on November 17 at the Auto Guangzhou 2023, GAC AION, the group's the electric vehicle (EV) subsidiary, officially announced plans to achieve mass production and installation of solid-state batteries by 2026, with Hyper being the first brand to adopt this technology.

GAC AION announcing plans to achieve solid-state battery production in 2026; photo credit: GAC AION

Within just three days since the press conference, GAC AION Lab declared the successful completion of experimental verifications for solid-state battery interface modification technology, marking a significant technological breakthrough. This advancement is expected to reduce the capacity degradation of solid-state batteries by 50%, ensuring that the battery capacity remains above 90% even after 150 cycles.

Long regarded as the most promising "next-generation power battery," solid-state batteries boast ultra-high energy density exceeding 400 Wh/kg, exceptional safety against high temperatures and punctures, and a wide operating temperature range.

The interface of solid-state batteries involves solid-to-solid contact, resulting in high contact impedance and poor stability. This has historically led to significant capacity decay and a shortened lifespan, hindering the transition of solid-state batteries from the laboratory to mass production.

GAC AION said GAC AION Lab addressed this challenge by employing a specially designed solid electrolyte composition, inducing the formation of an interface buffering layer on the negative electrode surface. This innovation effectively reduces interface impedance and enhances stability. In actual testing, conventional solid-state batteries experienced a substantial capacity drop to 80% after 150 cycles, while those using interface modification technology demonstrated significantly improved cycling stability, maintaining a capacity retention rate above 90% after 150 cycles, representing a 50% reduction in battery lifespan decay.

In addition, GAC AION revealed that ongoing developments in novel solid electrolytes and solid-solid interface modification technologies aim to continually optimize the comprehensive performance of solid-state batteries.