Li-ion battery with ~3X specific energy (Wh/kg) increase
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Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
Interesting. Would be nice to know what sort of power density it has. If the rates are anything like contemporary Li-ions, this is disruptive indeed.
Imagine a Tesla Roadster with a 1,200 mile range.
Imagine a Tesla Roadster with a 1,200 mile range.
"Courage is not just a virtue, but the form of every virtue at the testing point." C. S. Lewis
Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
I'd be rather pleased with a cell phone battery I could go a week between charges on...
(Okay, I'm an underachiever in the realm of wishful thinking, lol...)
(Okay, I'm an underachiever in the realm of wishful thinking, lol...)
When opinion and reality conflict - guess which one is going to win in the long run.
Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
I think we'd be talking more like an 800 mile range on the Tesla... not that's anything to shake a stick at. But more exciting, I think, would be an affordable Tesla with a 250 mile range.
Yet, every month or so there's a similar announcement from someone. I feel like making a list of all the announcements of various battery techs and charting their progress (or lack thereof). I have a feeling that > 50% of them, such a list would have no followup after the initial announcement. Here's hoping this one is different...
Yet, every month or so there's a similar announcement from someone. I feel like making a list of all the announcements of various battery techs and charting their progress (or lack thereof). I have a feeling that > 50% of them, such a list would have no followup after the initial announcement. Here's hoping this one is different...
Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
More energy density would be in some ways nice, but did anyone else think "bang"? System stability under large scale manufacture and real world use is important.
The daylight is uncomfortably bright for eyes so long in the dark.
Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
Yes. Greater energy density = more mischief when things go wrong.hanelyp wrote:More energy density would be in some ways nice, but did anyone else think "bang"? System stability under large scale manufacture and real world use is important.
Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
Looks like the trick is going to be good cycling.
[They seem pretty convinced that their electrolyte will work.]
[They seem pretty convinced that their electrolyte will work.]
Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
Range? Ha! Supercar Tesla...
You can do anything you want with laws except make Americans obey them. | What I want to do is to look up S. . . . I call him the Schadenfreudean Man.
Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
Help me out here...hanelyp wrote:More energy density would be in some ways nice, but did anyone else think "bang"? System stability under large scale manufacture and real world use is important.
Wh = mAh * (V / 1000)
1 watt hour = 3600 joules
so at 5V: 1200mAh/g * (5V / 1000) * 3600 J/Wh = 21600 J/g
and at 12V: 1200mAh/g * (12V / 1000) * 3600 J/Wh = 51840 J/g
So this stuff at 12v would be better than gas. While the
energy density of gasoline is ~46000 J/g, gas tends not
to be able to suddenly dump all its energy.
The energy density of TNT is only 4184 J/g but it can
discharge the lot rather suddenly.
I expect these would be rather closer to TNT in their
ability to suddenly discharge stored energy. Have I
done the conversion wrong here, or is this going to be
rather nasty in a car wreck?
"Reality is that which, when you stop believing in it, doesn't go away."
--Philip K. Dick
--Philip K. Dick
Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
You can't vary the voltage that way; this isn't a capacitor. Individual voltaic cells have a characteristic potential that depends only on their chemistry (and a bit on the state of charge, especially near empty).
Given the fairly wide range of energy densities (and variation in characteristic potential) in different types of lithium ion cells, I'm not sure we have enough information here to figure out what the power density of this new entry would actually be.
They do make a big deal out of the design's "inherent safety", for what that's worth...
Given the fairly wide range of energy densities (and variation in characteristic potential) in different types of lithium ion cells, I'm not sure we have enough information here to figure out what the power density of this new entry would actually be.
They do make a big deal out of the design's "inherent safety", for what that's worth...
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Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
You're not trying to build the equivalent of the JATO-equipped Chevy, are you? That didn't end well, apocryphally speaking.Betruger wrote:Range? Ha! Supercar Tesla...
Re: Li-ion battery with ~3X specific energy (Wh/kg) increase
Crash And Burn !
You can do anything you want with laws except make Americans obey them. | What I want to do is to look up S. . . . I call him the Schadenfreudean Man.