RE: yellow dragon21 Sep 2018 07:41
YTSS - Professor Banerjee of Texas A & M University actually commented to me that for polyvalent (i.e. more than just 1+ eg Magnesium 2+) solid state batteries the best performing anode material is actually Vanadium pentoxide. Sodium is only 1+ so that may not apply there, but equally you don't get the benefit of having twice as much charged shunted around with the ion.
Still, ALL solid state batteries break down it is just a question of trying to manage and control to some extent the processes that take place at a mesoscopic (over the range of tens to a few hundreds of atomic diameters) level - which is a branch of science which has masses to explore in and millions of man years of research yet to do in. Great if you are scientist, not great if you are the one having to pay them. I was one of the former, now I am one of the latter,
Vanadium Flow Batteries just work, no fancy new science to be done. And simple as they are they keep on working. You might have to change a pump or a few seals in 10 years, but the electrolyte stays the same in that time and nothing changes. I like them because they are simple and can quite easily be made in a secondary school chemistry class.