Comment Lithium isn't rare, and it is important (Score 5, Interesting) 51
There's a lot of papers, many which appear here on /., talking up alternative non lithium battery chemistries because "they're cheaper". The assumption often is that lithium is somehow rare. It's really not, there's already lithium reserves for decade after decade of battery production at much larger scales than now. The thing is that's it's just not lithium cheaply accessible via today's mining and processing technologies, at least by those already in well established use. And we want lithium, lithium is inherently a very good battery material, being the lightest atomic weight metal there is. In theory it could be stretched to the same energy density as rocket and jet fuel (yes this means EV planes). But all that lithium stuck bound up to rocks needs to be cheap, and so that's why we research like in this article.