[ad_1]
It turns out that the secret to making better batteries lies in the use of carbon nanotubes.
A research conducted by scientists from Rice University, published in the journal Advanced Materials, confirmed the benefits of using carbon nanotubes.
They discovered that carbon nanotube films are very powerful, fast charge lithium-metal batteries that are a useful substitute for commonly used lithium-ion batteries.
Lead investigator, James Tour, said the nanotube films effectively block dendrites that grew from unprotected lithium metal anodes into batteries and, over time, could pierce the nucleus of nanotubes. electrolyte from the battery and reach the cathode, possibly resulting in battery failure.
The advantage of lithium metal is that it charges much faster and that it contains 10 times more energy in volume than lithium-ion electrodes.
"One of the ways to slow down dendrites in lithium-ion batteries is to limit their charge speed," Tour said.
He further mentioned that a layer of lithium metal coated with a multi-walled carbon nanotube film did the work.
"The lithium dope nanotube film, which goes from black to red, and the film, in turn, diffuses lithium ions," he added.
According to another lead researcher, Rodrigo Salvatierra, physical contact with lithium metal reduces the nanotube film and equilibrium by adding lithium ions.
"The ions are distributed in the nanotube film," added Salvatierra.
When the battery is in use, the film releases stored ions and the underlying lithium anode fills it, helping to maintain the film's ability to completely stop dendrite growth.
The test revealed that the entangled nanotube film effectively destroyed the dendrites on 580 charge / discharge cycles of a test battery when used with a carbon-sulfur cathode.
The researchers even reported that lithium metal cells retained 99.8% of their effectiveness.
Click on Deccan Chronicle Technology and Science for the latest news and reviews. Follow us on Facebook, Twitter.
…
[ad_2]
Source link
