Li-ion battery, can work for 400 years Bashny.Net

Nanowires used in Li-ion batteries thousands of times thinner than a human hair, have a high conductivity and provide a large active surface area for the storage and transfer of electrons. However, in a typical lithium-ion battery during repeated cycles of charge-discharge, such fibers increase in volume, become brittle and disintegrate.

Graduate student at the University of California, Irvine unexpectedly made a discovery that may allow you to create batteries that can work for orders of magnitude longer than today's batteries.

Experimenting in the lab with different materials, Maya, Le Thai to put on gold nanowires manganese dioxide and all this covered with a gel electrolyte. The result is nanoaccumulator with virtually unlimited number of cycles of charge-discharge, can work for 400 years.





Batteries with electrodes based on nanowires have high conductivity and large area for the transmission and storage of electrons. In practice, they are degraded by a large number of cycles of charge-discharge. In lithium-ion batteries nano-wires become brittle and break.

During the experiments, created by Le Thai to the nanowires within 3 months withstood 200 thousand cycles, it was not recorded any signs of wear.

In an article published in the journal Energy Letters to the authors of opening explain this anomalous stability — so far, these electrodes are hardly experienced, at best, 6-7 thousand of cycles — the influence of the gel on the oxide coating. In their assumptions, it gives the oxide plasticity, necessary for without prejudice to withstand cyclic changes in volume of the nanowires.

It is assumed that due to the electrolyte gel nanowires is flexible, holds its shape better and does not break. In addition, the experiments were able to significantly strengthen the electrodes used in lithium-ion batteries. published

 

P. S. And remember, only by changing their consumption — together we change the world! ©

Source: altenergiya.ru/accumulator/litij-ionnyj-akkumulyator-prorabotaet-400-let.html