<
https://reneweconomy.com.au/zinc-iodine-battery-breakthrough-brings-safer-cheaper-storage-tech-closer-to-reality/>
"Australian researchers are reporting a breakthrough on aqueous zinc-iodine
batteries, an up-and-coming alternative to lithium-ion batteries that promises
to be safer, more sustainable and cheaper for grid-scale storage – if
performance issues can be ironed out.
The team from the University of Adelaide team has developed a new “dry
electrode” for zinc-iodine batteries that has been found to boost energy
density, reduce battery degradation and ensure greater overall stability.
Professor Shizhang Qiao, director at the Centre for Materials in Energy and
Catalysis at the university’s School of Chemical Engineering says the new
electrode technique avoids traditional wet mixing of iodine, which can reduce
storage capacity, degrade performance and shorten cycle life.
“We mixed active materials as dry powders and rolled them into thick,
self-supporting electrodes,” said Qiao, who leads the research team.
“At the same time, we added a small amount of a simple chemical, called
1,3,5-trioxane, to the electrolyte, which turns into a flexible protective film
on the zinc surface during charging.
“This film keeps zinc from forming sharp dendrites – needle-like structures
that can form on the surface of the zinc anode during charging and discharging
– that can short the battery.”"
Cheers,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
