Phimega Group Post #51

Conductive eTextiles: Stanford finds a new use for cloth
posted by soliton at Tue, 2 Mar 2010 - 11:11:20

Stanford researchers have moved from making batteries from paper to
making batteries from cloth. Your T-shirt could become a lighted,
moving display.

A team of Stanford researchers is producing batteries and simple
capacitors from ordinary textiles dipped in nanoparticle-infused ink.
The conductive textiles =96 dubbed "eTextiles" =96 represent a new class
of integrated energy storage device, born from the synthesis of
prehistoric technology with cutting-edge materials science.

"We have been developing all kinds of materials, trying to
revolutionize battery performance," said Yi Cui, assistant professor
of materials science and engineering at Stanford. "Recently, we
started to think about how to make batteries in a very different way
from before."

While conventional batteries are made by coating metallic foil in a
particle slurry and rolling it into compact form =96 a capital-intensive
process =96 the new energy textiles were manufactured using a simple
"dipping and drying" procedure, whereby a strip of fabric is coated
with a special ink formula and dehydrated in the oven.

The procedure works for manufacturing batteries or supercapacitors,
depending on the contents of the ink =96 oxide particles such as LiCoO2
for batteries; conductive carbon molecules (single-walled carbon
nanotubes, or SWNTs) for supercapacitors. Up to now, the team has only
used black ink, but Cui said it is possible to produce a range of
colors by adding different dyes to the carbon nanotubes.

More:
http://news.stanford.edu/news/2010/february1/batteries-from-cloth-020510.ht=
ml

--=20
soliton
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