Me, from an earlier post:  "In the field of stationary battery supply, hydrogen is just one of a huge number of players, and probably not one of the best at that.  That niche is exploiding with various other players."

Alternative battery chemistries are certainly rapidly expanding, in terms of development, across labs from all over the world, but the field of stationary energy storage is much broader than just the area of alternative battery chemistries, as evidenced by just one of the many other possibilities for energy storage linked in this article below:

Can gravity batteries solve our energy storage problems? - BBC Future

I can't find the article at the moment, but I read some time ago about a proposal in California for a railroad train track on a steep hill that would have an electric powered engine transport huge blocks of concrete up the hill to a depository at the top of the hill.  The train would be powered by excess alternative energy production that could not be immediately used otherwise that was generated from solar, wind or some other alternative energy source.  When the energy was needed by the grid then the reverse direction would be used in that the same very heavy concrete blocks would then be transported down the same rail line via the force of gravity and, in the process, be used to turn their kinetic energy back into electricity to feed the grid.  This method, too, was also touted as one way to stabalize the grid.  The same claim is made in the article from BBC about gravity batteries.  The train on a hill method is just a variation of the direct vertical stacking of heavy weights mentioned inthe BBC article.

Energy Storage is a wide open field now in terms of the science and engineering aspects and also in terms of the possible investment opportunities.  Lithium batteries are only one part of the picture for the future of Energy Storage and as time goes on they will play an increasingly smaller part of that picture.  Thankfully, that decline in portion of the pie is not something that will be seen in the area of EV utilization of lithium batteries for many years, just the reverse in fact as the demand and utilization of lithium batteries in the field of Electric Vehicles continues to expand for a considerable number of years in the future.

LAC is well positioned to take advantage of that expanding demand for lithium.

Okiedo