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Last updated: 28th October 2018 21:12 IST
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Washington DC, [USA] Oct. 28 (ANI): 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 produced high-power, fast-charging lithium metal batteries, which were a useful substitute for commonly used lithium-ion batteries. Dendrites that develop from unprotected lithium metal anodes into batteries and can, over time, pierce the battery's electrolyte core and reach the cathode, eventually resulting in failure of the battery. drums.
The advantage of lithium metal is that it charges much faster and holds up a long time. 10 times more energy in volume than lithium-ion electrodes.
"One of the ways to slow dendrites in lithium-ion batteries is to limit their charge speed," Tour said.
It further mentions that a layer of lithium metal coated with a multilayer carbon nanotube film does the job.
"Lithium coats the film of nanotubes, which goes from black to red, and the film, in turn, diffuses the lithium ions," he added.
According to another principal investigator, Rodrigo Salvatierra, physical contact with lithium metal reduces the nanotube film and equilibrates 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, which helps maintain the film's ability to completely stop the growth of dendrites.
The test revealed that a film of nanotubes effectively destroyed dendrites on 580 charge / discharge cycles of a test battery when used with a sulfide carbon cathode.
The researchers even reported that lithium metal cells retained 99. 8% of their effectiveness. (ANI)
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