How can you use crab shells without throwing them away?
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Scientists wondered: how else can you use crab shells so as not to throw them away? Interest in this protective coating is not accidental – a biodegradable zinc-ion battery has already been developed from the chitin contained in it.
This time, the waste was turned into solid carbon to serve as electrodes for sodium-ion batteries. Today, they are able to successfully replace lithium batteries. True, there are fears that the amount of material being mined will not satisfy the growing needs, so science is looking for options.
Scientists heated crab shells to over 500 degrees to produce “crab carbon”. They then added iron and tin sulfides to the solution. After testing on a model battery, the researchers found that both composites had decent capacity and could last at least 200 cycles.
According to the telegram channel #zerowaste
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