Securing our energy future is the most important problem that humanity faces in this century. As we all know burning fossil fuels is not sustainable, on the other hand , electricity has the advantages of easy to use , safety ,economical, clean , convenient to transport, widely range of applications. So we can predict that electricity takes place of the fossil fuels is the inevitable trend of the future energy consumption . The widely use of electricity need a drastically increased ability to store electrical energy. In the move toward an electrical economy, efficient energy storage such as sup