Super environmentally friendly: The 'fool's gold battery

(Swiss Federal Laboratories for Materials Science and Technology (EMPA)) High-performance lithium ion batteries face a major problem: Lithium will eventually start to run out as batteries are deployed in electric cars and stationary storage units. Researchers from Empa and ETH Zurich have now discovered an alternative: the 'fool's gold battery'. It consists of iron, sulfur, sodium and magnesium --all elements that are in plentiful supply. This means that giant storage batteries could be built on