http://www.bbc.co.uk/news/business-39420729
There is no shortage of researchers looking for the next breakthrough. Some are developing "flow" batteries, which work by pumping charged liquid electrolytes. Harvard researchers working on "flow" batteries have identified a new class of organic molecules, inspired by vitamin B2, that can safely store electricity. Some are experimenting with new materials to combine with lithium, including sulphur and air. Some are using nanotechnology in the wires of electrodes to make batteries last longer. But history counsels caution: game changers haven't come along often.....