Glass electrolyte battery technology

[Tom L]

New battery technology posts are a dime a dozen but this one comes with pedigree (the guy was co-creator of the Li battery): https://news.utexas.edu/2017/02/28/goodenough-introduces-new-battery-technology

It seems to tick all the boxes, safer, more energy dense, high charge and discharge rates, larger cycle life, etc... I wonder what the challenges are that still have to be overcome for this to be a commercial product.

 

[amberwolf]

https://endless-sphere.com/forums/viewtopic.php?f=14&t=57256&p=1264887&hilit=silicon#p1268358
https://endless-sphere.com/forums/viewtopic.php?f=14&t=57256&p=1264887&hilit=silicon#p1269150

 

[spinningmagnets]

I agree that, if it wasn't for the fact someone of Goodenough's stature was involved, I would think this is "just another press release". However, this looks like the real deal. Hard to pick which characteristic is the most impressive, since each is a major benefit.

Sodium is cheaper and more readily available than lithium

Triple the energy per volume (even if its actually only double, that's huge. Double the range? or same range in half the volume of battery?)

Robust fire-resistance.

Solid-state batteries (of various chemistries) are all the rage, but they are now sounding like we might actually see a product soon.

 

[amberwolf]

another thread for the same topic

https://endless-sphere.com/forums/viewtopic.php?f=14&t=86760


Perhaps they should all be merged to keep the discussions together?

 

[ddk]

...

Robust fire-resistance.

uhmmmm... nope
"Like all the alkali metals, sodium reacts exothermically with water, and sufficiently large pieces melt to a sphere and may explode. The reaction produces caustic soda (sodium hydroxide) and flammable hydrogen gas. " (wikipedia en)

I tested this once upon a time and the result was frightening, as in: burn, baby, burn.

 

[Tom L]

Sure if you pierce the battery and expose it to water you're probably going to have a bad time.

However it is unlikely that this battery will explode/catch fire during normal use.

What has happens with current lithium technology is that excessive heat from a battery fault vaporises the extremely flammable electrolyte. As the electrolyte in the proposed battery is a ceramic this is not a possible failure mode.

Over or under charging this battery is not dangerous as is the case with today's lithium technology.

 

[Tom L]

another thread for the same topic

https://endless-sphere.com/forums/viewtopic.php?f=14&t=86760


Perhaps they should all be merged to keep the discussions together?

Good idea.