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A Glass Battery That Keeps Getting Better?

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Re: A Glass Battery That Keeps Getting Better?

#41

Post by baroffoos »

hetman wrote: post #38
audunw wrote: post #25

Earlier 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.

Do you have a source for the candle fact? Thats quite interesting.

Re: A Glass Battery That Keeps Getting Better?

#42

Post by ketralnis »

mikeatlas wrote: post #27
wolfi1 wrote: post #9

there is some critique on previous papers[1] I would wait for an update from this blog to actually assess if these claims can hold water [1] http://lacey.se/2018/07/05/glass-battery-part-2/

what if their claims only hold energy?

Then we still won't have our water batteries with water density better than that of a bucket

Re: A Glass Battery That Keeps Getting Better?

#43

Post by jhayward »

oliveshell wrote: post #35
jhayward wrote: post #34

Earlier quoted context omitted.

As far as I know all ion-exchange (chemical) batteries have a positive temperature coefficient of performance. Lead-acid, NiMH, Alkaline, Lithium-ion, Vanadium flow, etc.

I'm curious, are there types of battery that don't use ion exchange? I'm familiar with physical energy storage using flywheels or compressed air; I suppose you could call something like that a battery if set up to spin a generator.

That's an interesting question. As you say, it depends on definitions.

I would say that some betavoltaic devices would qualify, and perhaps some phase-change stuff that I can't recall right now. Supercapacitors are essentially batteries but I seem to recall they actually do ion exchange as well.

Re: A Glass Battery That Keeps Getting Better?

#44

Post by thatcat »

baroffoos wrote: post #41
hetman wrote: post #38

Earlier quoted context omitted.

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.

Do you have a source for the candle fact? Thats quite interesting.

A quick search shows tnt has 4 kJ / g while paraffin has 42 kJ / g. A lot of energy is in paraffin's hydrocarbon chain, but less energy per bond and it is less accessible.

Re: A Glass Battery That Keeps Getting Better?

#45

Post by Dylan16807 »

TheSpiceIsLife wrote: post #39
kickopotomus wrote: post #32

Earlier quoted context omitted.

Or prohibitively expensive production cost

A Venn diagram with the labels 'production cost, 'energy density', and 'number of charge cycles' with 'Ideal Battery Technology' in the centre.

Only if you declare the center as infinitely perfect in every way. If you allow each axis to trade off with the others, then there is no single ideal. Fixed storage would rather have better prices and cycles in exchange for worse density. Mobile devices would rather have better density in exchange for higher prices.

(You can look at it like a path through the solution space. If you keep letting someone pick which attribute to improve, over and over, you eventually hit infinity/infinity/infinity, but different users will take very different paths to get there. At any particular count of improvements, their ideal batteries are significantly different.)

And with regard to kickopotomus's comment, you can get away with a much higher cost if you're targeting the right niche.

Re: A Glass Battery That Keeps Getting Better?

#47

Post by mycall »

wlesieutre wrote: post #17

The really important bit, comparison to lithium ion: >She did say that large battery banks that might be spun off from this research stand to not only have higher capacity, but also be substantially lighter than lithium ions. Although, she adds, perhaps the greatest weight savings will come not from comparing one battery cell's mass with another. “The biggest difference would be that you don’t have to have the same s…

I would think glass is easy to break under heavy vibration or worse. How is that concern handled?

Re: A Glass Battery That Keeps Getting Better?

#48

Post by mycall »

Baeocystin wrote: post #37
cellularmitosis wrote: post #26

Earlier quoted context omitted.

Cold weather performance is an issue for the folks who replace their motorcycle battery with a lithium ion aftermarket upgrade. https://advrider.com/f/threads/lithium-ion-batteries-in-cold...

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?

Re: A Glass Battery That Keeps Getting Better?

#49

Post by xhgdvjky »

m463 wrote: post #36
gnode wrote: post #15

This sounds similar to the concept of self-healing materials. Such materials aren't necessarily at full health (optimal structure) following manufacture, so could expect to see improvements through use. Some materials and devices also benefit from being broken-in; where properties which impede utility are degraded more rapidly than properties which positively contribute to it.

I thought of concrete vibrators. (probably not the best analogy though) When people pour concrete they get a certain strength out of it. But if they vibrate it, air and excess water gets removed, and the concrete aligns together to become more cohesive.

I think this is a great analogy since air bubbles are easier (for me) to imagine than the polarity of particles

Re: A Glass Battery That Keeps Getting Better?

#50

Post by ricardobeat »

mycall wrote: post #47
wlesieutre wrote: post #17

The really important bit, comparison to lithium ion: >She did say that large battery banks that might be spun off from this research stand to not only have higher capacity, but also be substantially lighter than lithium ions. Although, she adds, perhaps the greatest weight savings will come not from comparing one battery cell's mass with another. “The biggest difference would be that you don’t have to have the same s…

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.
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