Who: Stanford University.
What: Smart lithium-ion battery that warns user before it overheats using a nanolayer of copper. http://www.nature.com/ncomms/2014/141013/ncomms6193/full/ncomms6193.html
Image: Copper nanolayer (Stanford University)
Where: Conventional lithium-ion batteries.
When: The technology is at the proof of concept stage.
