Huawei, the Chinese tech company based in Guangdong, has filed a new patent that could revolutionise electric vehicles. The company claims to have developed a solid-state EV battery with a massive range of over 3000 kilometres on a single charge and the ability to charge fully in just 5 minutes.
According to the patent, the battery uses a nitrogen-doped sulfide electrolyte, which significantly boosts the energy density to around 400–500 Wh/kg. This is two to three times higher than what current lithium-ion batteries offer. The nitrogen doping helps to stabilise the lithium interface and reduce the risk of harmful chemical reactions, which have long been major challenges in the development of solid-state batteries.
While the innovation is impressive on paper, industry experts remain cautious. They point out that these results are based on laboratory testing and may not translate to mass-produced models in real-world conditions. One major issue is the high production cost of sulfide electrolytes, which are priced at around $1,400 per kWh or nearly 1.20 lakh. Another significant hurdle is the lack of infrastructure to support ultra-fast charging technology on a wide scale.
Huawei is not currently a manufacturer of power batteries, but its increasing investments in battery research and materials signal a clear intent to enter the sector more aggressively in the future.
It’s also important to note that the 3000+ km range is based on the CLTC (China Light-Duty Vehicle Test Cycle). Under the EPA (Environmental Protection Agency) test cycle, the range drops to over 2000 kilometres, which still surpasses any electric vehicle currently available globally.
Global battery giants like Toyota, Samsung SDI, and CATL are aiming to roll out commercial solid-state batteries between 2027 and 2030. However, Huawei’s recent patent and claims have caught the industry by surprise. If the company succeeds in bringing this technology to market, it could eliminate range anxiety and drastically reduce charging times, pushing the EV sector into a new era of innovation and convenience.
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