3/14/11
New high resolution images of electrode wires made from materials used in rechargeable
thium ion batteries shows them contorting as they become charged with electricity.
The thin,
ano-sized wires writhe and fatten as lithium ions flow in during...
More
3/14/11
New high resolution images of electrode wires made from materials used in rechargeable
thium ion batteries shows them contorting as they become charged with electricity.
The thin,
ano-sized wires writhe and fatten as lithium ions flow in during charging, according to a paper
n this week s issue of the journal Science.
The work suggests how rechargeable batteries
ventually give out and might offer insights for building better batteries.
Battery developers know that recharging and using lithium batteries over and over
amages the electrode materials, but these images at nanometer scale offer a real-life glimpse
nto how.
Thin wires of tin oxide, which serve as the negative electrode, fatten by a third and
tretch twice as long due to lithium ions coursing in.
In addition, the lithium ions change the tin
xide from a neatly arranged crystal to an amorphous glassy material.
"Nanowires of tin oxide were able to withstand the deformations associated with electrical
ow better than b
Less
