Review on Li-air batteries-Opportunities, limitations and perspective

Li-air batteries are potentially viable ultrahigh energy density chemical power sources, which could potentially offer specific energies up to similar to 3000 Wh kg(-1) being rechargeable. The modern state of art and the challenges in the field of Li-air batteries are considered. Although their implementation holds the greatest promise in a number of applications ranging from portable electronics to electric vehicles, there are also impressive challenges in development of cathode materials and electrolyte systems of these batteries. (C) 2010 Elsevier B.V. All rights reserved.