Sign up at http://www.brilliant.org/answerswithjoe and get 20% off your subscription. As the world becomes more electrified, the race is on to build cheaper, longer-lasting, more energy-dense batteries. One of the most promising technologies in this space is the solid state battery, developed by an absolute legend in the battery world, one of the inventors of the lithium ion battery and recent Nobel Prize winner John B. Goodenough