, Electric Vehicle News Search 2500+ EV News articles skip to main skip to sidebar Home Toyota Toyota , BMW to Research Lithium-Air Battery Thursday , January 24, 2013 Toyota , BMW to Research Lithium-Air Battery Toyota Motor Corp and BMW AG will jointly research a lithium-air battery expected to be more powerful than the lithium-ion batteries used in many hybrid and electric vehicles , the two firms said . Toyota uses lithium-ion batteries in its Prius plug-in hybrid , some Prius v , and the eQ electric car . A lithium-air battery has its anode filled with lithium , and cathode with air . Theoretically , the battery can store more than 5,000 watt-hours per kilogram . A123 M1 cells are around 120 wh kg The technology is being studied by researchers including IBM which is working to develop