Green Car Congress

MAY 14, 2010

Schematic representation and operating principles of the lithium–water electrochemical cell used for hydrogen generation: (1) external circuit and (2) inside of lithium–water electrochemical cell. the high-school chemistry demonstration of the violent reaction between sodium and water.). Source: Wang et al.

Water 186

Water Lithium Ion Li-ion Hydrogen 186

Green Car Congress

JULY 25, 2016

Conventional lithium-air batteries draw in oxygen from the outside air to drive a chemical reaction with the battery’s lithium during the discharging cycle, and this oxygen is then released again to the atmosphere during the reverse reaction in the charging cycle. —Zhu et al.

Cheap 150

Cheap Li-ion Batteries Battery 150

Green Car Congress

APRIL 30, 2010

Today’s technologies for making biofuels all rely on photosynthesis—either indirectly by converting plants to fuels or directly by harnessing photosynthetic organisms such as algae. This process is less than 1% efficient at converting sunlight to stored chemical energy. Water will be the primary byproduct. Engineering E.

Carbon 249

Carbon Batteries Battery Li-ion 249