Researchers at
Stanford
University claim to be able to extend the battery life of lithium-ion
batteries by a factor of 10 using silicon nanowires.
The new version of the batteries produces 10 times the amount of electricity
of existing lithium-ion batteries.
This means that a laptop that currently runs on battery for two hours could
operate for 20 hours.
"It is not a small improvement, it is a revolutionary development," said Yi
Cui, assistant professor of materials science and the head of the project.
The breakthrough was published online at
Nature
Nanotechnology, and was written by Cui, his graduate chemistry student
Candace Chan and five other researchers.
Cui suggested that the greatly expanded storage capacity could make Li-ion
batteries attractive to electric car manufacturers.
He also suggested that they could also be used in homes or offices to store
electricity generated by rooftop solar panels.
"Given the mature infrastructure behind silicon, this new technology can be
pushed to real life quickly," he said.
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