You have to love the folks at MIT, that's a pretty good headline.
"By making such batteries safer, the new material could help clear the way for the widespread use of lithium-ion batteries in hybrid and electric vehicles."
I was just about to write that it may not matter, that there are other battery approaches just coming over the horizon, when I see reference to this in the comments section:
Followed by this comment: "Funny, I'm still waiting for people to stop hyping EEStor on these posts. I guess people just wait for different things. I have a feeling neither one of us will get what we're waiting for anytime soon."
From MIT's Technology Review