Scientists for decades to try to create a safe and durable battery with anode of lithium metal, but have not yet solved the problem of dendrites. American researchers, it seems to have succeeded – they have used carbon nanotubes and created the anode, which generally do not form dendrites. The solution dramatically improves the efficiency of lithium-ion battery and will speed up the charging process.
The problem is that in the process of charging lithium-ion batteries on the surface of the anode formed dendrites, branching crystals, which can “scrape” the key battery components and cause an electric shock or fire. If this does not happen, the battery will still quickly lose charge, пишетEurekAlert.
How to solve the problem
Experts from the University of Texas say they found the solution in ultrathin carbon nanotubes. They produced porous scaffolds, coated with molecules that cause lithium ions connect with surface.
Model development the Texas scientists
Experimentally scientists have found the correct concentration of molecules, but has not yet created anode, which does not occur in the dendrites.
Another advantage of the uniform distribution of lithium ions – increase of battery capacity to give and to keep higher currents, up to five times more than modern counterparts. These batteries will not only be safer and more efficient, but can be recharged much faster – in 3-5 times faster than existing. Most promising to use them to power electric cars.
“The creation of lithium metal anodes, which are safe and have long service life, it was a research issue for many decades. We have developed anodes to overcome these obstacles,” said one of the study’s authors Yuran But.
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