Report: Japanese Company Develops Cheap, Powerful Home And Car Battery

Serkan Toto

Dr. Serkan Toto is an independent consultant and advisor focusing on Japan’s web, mobile and social gaming industries. Based in Tokyo, he works together with financial institutions and startups worldwide. Serkan has been the Japan contributor for TechCrunch.com since 2008. He is sept-lingual, holds an MBA and is a PhD in economics. → Learn More

Friday, March 4th, 2011

Looks like we’re getting better, cheaper batteries soon: Sumitomo Electric Industries succeeded in developing a molten-salt battery that’s supposedly 90% cheaper to produce than lithium-ion batteries. The company claims that even though molten-salt batteries are nothing new, the sodium material in their prototype starts melting at 57C to keep the electrolyte in a liquid state (and not at more than 300C like in existing batteries).

The rechargeable battery is said to have twice the energy density of a typical lithium ion battery. In other words, makers of electric cars, for example, could save space and offer vehicles with a longer travel range. Sumitomo expects the new battery to be priced at about $240 per kWh, about 10% of the price of made-in-Japan lithium-ion batteries.

Sumitomo plans to start offering the battery for use in cars and homes around 2015 and already applied for a patent. Following the news, Sumitomo Electric Industries stocks soared a respectable 8% at the Stock Exchange today.

Via Response [JP]