Salt batteries are finally taking shape: it’s good for the planet

The following is an excerpt from our Fix the Planet climate newsletter. Discover our range of newsletters and register here.

The clean energy revolution depends on batteries, but almost all the batteries we use today are made from lithium, a metal with a limited supply and devastating environmental impact. Can we replace it with something more readily available?

New scientist published a report on batteries made from common salt in January 2021. These sodium-ion versions promised a cheaper alternative to those made in…