Scientists say new material can triple lithium-ion battery energy density

Post by Tloewald » Sun, Jun 17, 2018, 3:35 AM UTC

Amygaz wrote: post #38

linsomniac wrote: post #33

If even half of these amazing battery technologies had come true, my car would be driven by a D cell battery. But I'm ok that it hasn't, because I once heard a battery chemistry guy say that "the higher capacity a battery is the more it resembles a bomb." I can't find the reference any more, but with all the Samsungs and Teslas catching fire, it rings true.

These have not much to do with attempt at increasing power density, but everything to do with particle contamination during the manufacturing process.

Post by skookumchuck » Sun, Jun 17, 2018, 3:46 AM UTC

Gibbon1 wrote: post #31

jwatte wrote: post #25

Isn't there a new cathode material promising manyfold improvement announced about every three weeks or so? I'd like to see one of them actually deliver in new batteries. But instead, the 50% or so improvement we've seen over the last ten years have all been because of incremental refinement. Color me skeptical until it's proven in production.

There has been an enormous amount work on battery technology for the last 30 years. Probably 99% of it leads to dead ends. Standard rule of battery development, if everything goes right it takes ten years to market. And another ten to get market share. In the late 90's early 2000's there was paper after paper published on lithium iron phosphate batteries and dick all nothing for sale until ~2010. And ten years later…

Post by bdamm » Sun, Jun 17, 2018, 4:30 AM UTC

jwatte wrote: post #25

Isn't there a new cathode material promising manyfold improvement announced about every three weeks or so? I'd like to see one of them actually deliver in new batteries. But instead, the 50% or so improvement we've seen over the last ten years have all been because of incremental refinement. Color me skeptical until it's proven in production.

Post by function_seven » Sun, Jun 17, 2018, 4:37 AM UTC

bdamm wrote: post #46

packet_nerd wrote: post #21

Earlier quoted context omitted.

> used up by shaving millimeters off the thickness I wish they didn't do that, I would gladly carry around a slightly bigger phone if it had much better battery life.

Many phone models do have expansion options like this, even iPhones. I for one am appreciative of “low power mode” so I get to choose efficiency over app freshness.

Post by givinguflac » Sun, Jun 17, 2018, 4:54 AM UTC

Tloewald wrote: post #41

Amygaz wrote: post #38

Earlier quoted context omitted.

These have not much to do with attempt at increasing power density, but everything to do with particle contamination during the manufacturing process.

They have everything to do with increasing power density. By definition power density is potential energy and when you release that energy you get waste heat.