If batteries are the question, calcium could be the answer

Could calcium provide a new sustainable approach for battery technology applications? Professor Palacìn of the CARBAT project answers key questions. Everybody needs energy. Our smartphones, computers and cars draw it from their batteries, which have different traits according to various materials they are made from. Currently, lithium-ion batteries represent a huge part of the market, but have technological limitations: it is not super abundant on Earth so its costly. And lithium batteries have low-density energy, which means they can store only a limited amount of energy, in the order of 200 Wh/kg (watt-hour per kilo). There might be another option. CARBAT (calcium Rechargeable BAttery...