> “This proof-of-concept design shows that lithium-metal solid-state batteries could be competitive with commercial lithium-ion batteries,” said Li. “And the flexibility and versatility of our multilayer design makes it potentially compatible with mass production procedures in the battery industry.
From the article they don't appear to be making such a claim:
> Scaling it up to the commercial battery wont’ be easy and there are still some practical challenges, but we believe they will be overcome
Do you have anything concrete to say about this technology?
is this a problem? I mean li-ion cells used by tesla only have around 4 volt and ~3000mA. I would consider size per cell/thermal per cell (as you stated warm/cold environments and charging) more important to make a good distinction.