(Chemical & Engineering News and ACS Nano)
Credit: Yi Cui, Stanford University
Ultrathin
rechargeable lithium-ion batteries have been fabricated on a single
sheet of paper, resulting in highly flexible and lightweight portable
power sources. Researchers coated a solid support with a thin film of
carbon nanotubes and deposited a film of a metal-containing lithium
compound on top of the nanotubes. Then the team deposited the
double-layer films on both sides of ordinary paper. The lithium layers
function as battery electrodes and the nanotube films serve as current
collectors. The paper is the electrode separator and also serves as a
mechanical support. The new batteries, which are just 300 μm thick, are
thinner and more flexible, and exhibit higher energy density and other
electrical advantages, compared to other types of thin batteries,
according to the researchers.
Thin, Flexible Secondary Li-Ion Paper Batteries
ACS Nano, Article ASAP September 13, 2010. DOI: 10.1021/nn1018158
_________________________________
Gopal R. Rao, Ph.D.
Web Science
Editor
Materials Research Society
(MRS)
Comments