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Zinc batteries that offer an alternative to lithium just got a big boost
(www.technologyreview.com)
this post was submitted on 09 Sep 2023
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I wonder if it can be cheaper and better at scale than iron-air batteries. Those seem inexpensive to make, and can carry a large enough capacity if you put a whole lot of them in parallel with each other, and have a long lifetime. They're just really heavy for their amount of energy density and fairly low current per cell, but that shouldn't be a problem when building enough to be grid-scale.
At that point one can use Na/O2... Much higher energy released by redox reaction, much lighter