Great Wall Motor (GWM) Chairman Wei Jianjun has stated that widespread commercial deployment of the company’s solid-state battery (SSB) technology is at least five years away, despite early prototypes showing promise. While GWM has achieved key milestones – including kilogram-scale sulfide solid electrolyte production and 20 Ah cell samples – significant hurdles remain in cost, safety, and sustained performance.
Solid-State Battery Challenges Remain
SSBs are seen as the next leap in EV battery technology, offering higher energy density and improved safety over traditional lithium-ion cells. However, scaling SSB production to commercial levels is proving difficult across the industry. GWM’s initial 2022 prototype, a 20 Ah sulfur-based cell, demonstrated an energy density of 350-400 Wh/kg and passed basic safety tests (nail penetration, high-temperature exposure). Yet, progress has stalled in the last four years.
Competition Accelerates While GWM Lags
GWM is facing increased pressure from rivals who are advancing SSB technology at a faster pace. GAC Group has already established a small-batch production line for 60 Ah SSB cells, with mass production targeted between 2027 and 2030. CALB, another battery maker, is also showcasing competitive 60 Ah cells claiming 450 Wh/kg energy density. Even Dreame, a vacuum cleaner manufacturer, has entered the SSB arena with its own 60 Ah prototypes. This suggests GWM is falling behind in a rapidly evolving field.
Diversified Approach: ICE Engines Remain a Priority
Despite the push toward EVs, GWM continues to invest in traditional internal combustion engines (ICE). The company plans to launch vehicles this year featuring a 3-liter diesel V6 and a 4-liter petrol V8, demonstrating a commitment to both legacy and emerging technologies. This diversified strategy highlights GWM’s flexibility in a shifting automotive market.
The delay in GWM’s SSB rollout underscores the complexities of commercializing next-generation battery technology. While early prototypes are encouraging, achieving mass production at competitive costs and safety standards remains a major challenge. The company’s continued investment in ICE engines suggests a pragmatic approach to navigating the energy transition.
