Friday, February 20, 2009

Nanotubes can help improve lithium battery

Researchers working at Rice University, have found a way to improve lithium batteries, which are currently the main sources of power wireless devices.

The basic idea of development is to use arrays of coaxial structures formed by carbon dioxide nanotubes and, as a material for the manufacture of electrodes.

Nanotubes are characterized by high conductivity and ability to «absorb» lithium. Metal oxide provides a high capacity and good insulation. As a result, according to scientists, the number of charge-discharge cycles, which can withstand the battery is substantially increased.

While this is a conceptual design, which the researchers are moving to experiments with a coaxial structure to find that their configuration, which provides the best performance. The diagram shows the process of forming an array of coaxial structures on a gold film using a template of the aluminum oxide.

According to researchers, found the approach to be effective and other sources of food, for example, in fuel cells.

Source: American Chemical Society's Nano Letters -