TOKYO – Toyota Motor Corp. is taking another step toward a breakthrough in solid-state batteries for electric cars with a new partnership to develop mass-production methods for the critical electrolyte, the automaker said in a statement.
The batteries, which have a ceramic-like electrolyte instead of a liquid one, are much more energy-dense, faster charging and considered safer than today’s liquid-electrolyte lithium ion batteries. The batteries are seen as especially beneficial in sports cars and big SUVs. Toyota plans two versions of all-solid-state batteries. The first will arrive around 2027 to 2028. Toyota targets a range of 1,000 kilometres for that battery and predicts it will recharge to 80 per cent state of charge from 10 per cent in about 10 minutes.
Idemitsu has been working on the fundamentals of solid-state batteries since 2001, while Toyota began its own R&D in 2006, the companies said. Idemitsu already has a small pilot plant making sulfide solid electrolytes and is building a large pilot factory as a test bed for commercialization in the next four to five years.
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