Showing posts from May, 2013

Tin Nanocrystals for future battery

Li-Ion Rechargeable Batteries Li-Ion (Lithium-Ion) batteries are the most common rechargeable batteries in portable electronics. Lithium ion batteries have one of the best energy densities, no memory effect,  slow loss of charge when not in use and environmentally safe because there is no free lithium metal, in comparison with other types of rechargeable batteries. Rechargeable lithium ion batteries are the preferred compact light weight storage media of choice to store a large amount of energy in a small space. They provide power for electric cars, electric bicycles, smart phones and laptops. Globally researchers are currently in the process of developing new generation of such batteries with an improved performance. In most lithium ion batteries these days, the plus pole is composed of the transition metal oxides cobalt, nickel, and manganese, the minus pole of graphite. In more powerful lithium ion batteries of the next generation, however, elements such as tin or silicon may well b