The nominating institution Stanford University on the breakthrough:

Efficient batteries are critical for our green energy strategy by powering electric cars and storing solar and wind electricity for grid integration. We pioneered nanotechnology-based materials design to enable novel breakthrough materials including silicon, lithium, and sulfur, which have ten times higher charge storage capacity than the current technology. These batteries have a 2-3 times higher energy density than existing ones, and we have started implementing them in industrial application.

Tags: Energy, Engineering, Environment & Nature, Green Tech, Renewable energies.