Earlier quoted context omitted.
I would think glass is easy to break under heavy vibration or worse. How is that concern handled?
Haven’t read the paper, but it seems to use glass powder.
You mean sand? :D
A Glass Battery That Keeps Getting Better?
51–57 of 57 posts
Re: A Glass Battery That Keeps Getting Better?
#52Earlier quoted context omitted.
I have a LiFEPO4 battery in my motorcycle, and even here in the bay area of California, I notice the change it its cranking ability on colder days. It's a real issue with the chemistry, as attempting to charge it while cold causes some unfavorable reactions as well, so relying on resistive heating to bring it up to temp isn't a great idea. It is kind of amusing that cranking it a few times until it peters out from la…
Have you tried heating blanket?
For my location, it would be more trouble than it's worth. If I lived somewhere a little colder, though, I think some kind of thermal control would be a real necessity.
Re: A Glass Battery That Keeps Getting Better?
#53> In fact, she adds, up to a point, rising temperatures only increase the electrolyte’s performance. This is the case for normal lithium-ion batteries as well; they perform better at 120°F than at 70°F (and lose significant performance at even lower temperatures).
I wonder how many people know that electric vehicles have heaters and AC units for the battery packs?
Re: A Glass Battery That Keeps Getting Better?
#54Earlier quoted context omitted.
Probably the only way of releasing the energy fast is to short the battery with a thick wire, or to burn the whole battery with an external source. There's no rule that having lots of bound up energy has to be dangerous, that it has to be possible to release it quickly. There's enormous amount of potential energy in pure hydrogen gas. If you can just fuse the atoms. But it's incredibly hard to release it.
Similarly, a candle carries over 10 times the energy of the same sized stick of TNT but you'd have to work pretty hard to get that energy out quickly.
Just throw the candle in a bucket of LOX.
The candle energy density number is very biased, as you still need to bring O₂, which weights a lot.
Re: A Glass Battery That Keeps Getting Better?
#55Earlier quoted context omitted.
I almost feel like this is a straw man to make this controversial. I don't see why anyone, even a layman, would say this.
A false "entropy of matter natural law" argument used to be forwarded by "evolution debunkers." Richard Dawkins debunked this fake natural law with a thought exercise involving an hourglass with water in one chamber and salt in the other. You can tilt the hourglass to mix the salt and water in one chamber, but if you sit the device in the sun, such that the sun shines on the full chamber, you will eventually see the…
It's too bad no one ever did this on YouTube. That would be highly persuasive.
Re: A Glass Battery That Keeps Getting Better?
#56> thermodynamics might seem to demand that a battery only deteriorates over many charge-discharge cycles. Well that's just nonsense. Any armchair "physicist" claiming that entropy must decrease over time is completely ignoring the fact that the battery is getting energy from an outside source every time it's charged.
I see what you mean (entropy always increases is valid only in a closed system assumption). But didn't you mean "claiming that entropy must increase" instead of "decrease" in your sentence?
Whoops, you're right.
Re: A Glass Battery That Keeps Getting Better?
#57This is the second release from the Goodenough lab from early 2018?
I wish there was more evidence of confirmed working prototypes. It sounds too good to be true, like the 2018 announcement.