A "sulfide-based solid-state battery that offers driving ranges of up to 3,000 kilometres and ultra-fast charging in just five minutes" has been patented by Huawei.

"The patent outlines a solid-state battery architecture with energy densities between 400 and 500 Wh/kg, potentially two to three times that of conventional lithium-ion cells. The filing also details a novel approach to improving electrochemical stability: doping sulfide electrolytes with nitrogen to address side reactions at the lithium interface, a long-standing obstacle to the commercialisation of sulfide-based batteries. Huawei's design aims to boost safety and cycle life by mitigating degradation at this critical junction."

"China's EV and tech sectors are aggressively exploring solid-state battery technologies to reduce reliance on established battery suppliers such as CATL and BYD."

"CATL aims to begin pilot production of a hybrid solid-state battery by 2027. Going High-Tech's 'Jinshi' battery -- featuring 350 Wh/kg energy density and 800 Wh/L volume density -- has entered small-scale production. At the same time, Beijing WeLion has begun manufacturing a 50 Ah all-solid-state cell with national certification."

Keep in mind, this is a patent. Nothing happens with most patents. They get filed, but the idea is never commercialized. Sometimes they get involved in patent lawsuits or threats of patent lawsuits. Or they just sit around as part of a corporations "war chest" that protects it against patent lawsuits.

Huawei's 3,000km solid-state battery patent with 5-minute charge ignites industry race

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Huawei’s 3,000km solid-state battery patent with 5-minute charge ignites industry race

Huawei’s patent filing describes a sulfide-based solid-state battery targeting higher energy density and reduced charging time

^{Adrian Leung (CarNewsChina.com)}