Thursday, May 06, 2021

Researchers develop new metal-free, recyclable polypeptide battery that degrades on demand

I avoide batteries when I can.  Eg., I have a wired computer mouse and keyboard. 


https://www.eurekalert.org/pub_releases/2021-05/tau-rdn050621.php

 

News Release 6-May-2021
This could result in battery production moving away from strategic elements like cobalt
Texas A&M University


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Current Li-ion [lithium-ion] batteries utilize significant amounts of cobalt, which in several well-documented international cases is mined using child labor in dangerous working environments. Additionally, only a very small percentage of Li-ion batteries are recycled, increasing the demand for cobalt and other strategic elements.

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The all-polypeptide organic radical battery composed of redox-active amino-acid macromolecules also solves the problem of recyclability. The components of the new battery platform can be degraded on demand in acidic conditions to generate amino acids, other building blocks and degradation products -- one of the major breakthroughs in this research, according to Lutkenhaus.

"The big problem with lithium-ion batteries right now is that they're not recycled to the degree that we are going to need for the future electrified transportation economy," Lutkenhaus added. "The rate of recycling lithium-ion batteries right now is in the single digits. There is valuable material in the lithium-ion battery, but it's very difficult and energy intensive to recover."

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