Carbonized titanium dioxide nanotubes increase efficiency of fuel cells

摘要

Mention of nanotubes usually means carbon nanotubes. But not all tiny tubes are made of carbon. For example, layers made of nano-scopic titanium dioxide have proven to be useful materials for biotechnology, catalytic converters and solar cell technology. Although the semiconducting prop- erties of these nanotubes are critical for many of these applications, their limited conductivity represents a hindrance for other areas of application.