As anyone who has a smart phone can tell you, battery technology has lagged far behind every other type of innovation.

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.

Joe Scott discusses in depth.