Improved Nanotubes for Microbatteries

Improved Nanotubes for Microbatteries

Author: ChemPlusChem

Titanium dioxide is an attractive anode material for lithium-ion batteries because it is thermally and chemically stable as well as cheap. However, a disadvantage for its use centers on the transport problem in bulk materials caused by limited electronic conductivity.

Limin Zhou and co-workers, Hong Kong Polytechnic University, have overcome this limitation and improved the rate performance of TiO2 nanotubes by annealing the arrays in a reducing atmosphere (5 % H2 and 95 % Ar). This simple approach transforms the whole TiO2 nanotube layer into a highly conductive n-type semiconductor (see figure).

Furthermore, the high-rate capability of rutile TiO2 nanowire arrays and anatase TiO2 nanoparticles can also be considerably improved by similar means.

This article is available for free as part of the ChemPlusChem free trial.

Leave a Reply

Kindly review our community guidelines before leaving a comment.

Your email address will not be published. Required fields are marked *