To hope for a change

Batteries free of metals

https://www.seas.harvard.edu/news/2...ry-promises-breakthrough-for-renewable-energy

That is cool, hope it pans out. Wondering about its efficacy.

A quick look at the "organic" (crude oil is also 'organic') redox chemistry reveals a pretty toxic electrolyte stew after use that must be recycled off-site unless you want to deal with the sludge. Organics means critters will find a way to grow in it. If the waste can be safely and cheaply recycled hundreds to thousands of times that would be a breakthrough to rival conventional batteries.