Tokyo, Japan, October 27, 2010-Toyota Motor Corporation (TMC), Toyota Chemical Engineering Co., Ltd. (Toyota Chemical Engineering), Sumitomo Metal Mining Co., Ltd. (Sumitomo Metal Mining) and ...

Lithium batteries store energy in a chemical form, and are widely used because they offer a relatively high energy density, but as anyone who owns a smartphone or electric car knows, they charge ...

And, NiMH batteries have a higher self-discharge rate than lithium-ion batteries, which means they can lose a more significant portion of their stored energy when not in use.

Batteries are so ubiquitous today that they're almost invisible to us. Yet they are a remarkable invention with a long and storied history, and an equally exciting future.

Previously, NiMH (nickel-metal-hydride) batteries were recovered by car dealers and vehicle dismantling businesses, where any scrap containing nickel was recycled as a raw material for stainless ...