Salt, silicon or graphite: energy storage goes beyond lithium ion batteries

Technologies that use gels, liquids, and molten silicon or salt could all claim a slice of the growing renewable energy storage market
Between the political bickering following a spate of blackouts in South Australia and the billionaire entrepreneur Elon Musk tweeting that he had a fix, and then the South Australian government announcing that it will build a grid-connected battery storage facility, interest in renewable energy storage has never been higher.While lithium ion batteries sold by Tes