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Old 02-12-2016, 06:21   #1
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Thread for future battery technology.

Batteries with a fraction of the weight of lithium, four times the energy density and a fraction of the price. Bring it on👍

With so many car companies saying half their cars will be electric by 2025 hundreds of millions are being poured into battery R&D. Exciting times.


Electric yachts - the future is here - Sailing Today

"Elsewhere, scientists have made a breakthrough with the lithium-air battery, that uses oxygen as one of the reagents. The claim is a battery that can eventually be made for a fifth of the price and a fifth as light as lithium, but could make phones, cars and boats operate five times longer.

Other research is probing the physics of other materials, like magnesium, gold ‘nanowires’, sodium-ion, and the carbon formulation, graphene. The Spanish company Graphenano has developed a graphene polymer battery called the Grabat, which it claims is 33 per cent the weight of lithium ion and four times the energy density. Better still, the batteries are claimed to recharge 33 times faster than lithium ion, and retain over 80 per cent of their capacity after thousands of cycles."
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Old 03-12-2016, 02:04   #2
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Re: Thread for future battery technology.

Junkyard batteries --

https://news.vanderbilt.edu/2016/11/...nkyard-scraps/
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Old 04-12-2016, 07:17   #3
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Re: Thread for future battery technology.

Diamond batteries... don't need recharging for 5000 years
https://www.engadget.com/2016/11/28/...nto-batteries/
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Old 04-12-2016, 08:11   #4
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Re: Thread for future battery technology.

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Diamond batteries... don't need recharging for 5000 years
https://www.engadget.com/2016/11/28/...nto-batteries/
+1! bump

Yes. Pretty awesome. I hope these will get commercialised soon. Be it in only small devices for the start.

Great job from them scientists, huh?

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Old 04-12-2016, 14:23   #5
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Re: Thread for future battery technology.

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Diamond batteries... don't need recharging for 5000 years
https://www.engadget.com/2016/11/28/...nto-batteries/
More planned redundancy? They're not rechargable.
You have to replace them every 5000 years, probably at great expense.

But seriously: low power output, so we're not going to be using it for electric propulsion on our boats, but just imagine never having to recharge your handheld GPS, portable VHF, cellphone etc. This one has a lot of promise,
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Old 04-12-2016, 15:56   #6
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Re: Thread for future battery technology.

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More planned redundancy? They're not rechargable.
You have to replace them every 5000 years, probably at great expense.

But seriously: low power output, so we're not going to be using it for electric propulsion on our boats, but just imagine never having to recharge your handheld GPS, portable VHF, cellphone etc. This one has a lot of promise,
Yep.

I am on the sailing wing of the CF portfolio so I care less about aux propulsion.

Still, makes me wonder how much theoretical energy could be gotten from say an AA equivalent diamond cell. After all e=mc2 and this implies heaps and heaps of heaps; but ... I would like to know in practical terms, if we could count on say 0.01W or rather 0.00000000001W ... ? etc.

I love such news, but I worry I will not last to see them work for me. I remember the news of graphene membranes (carbon again !!! sic!) for cheap watermaking. That was ... 8 years ago?

;-(

Still, great news and I hope the future will be cleaner and brighter for future sailors.

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Old 04-12-2016, 16:20   #7
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Re: Thread for future battery technology.

I was reading somewhere that there are so many different potentially good battery technologies out there that it was splitting the available funding into too many small pieces and not much was getting through to be commercially viable.

Meanwhile the really big players keep focusing on a technology that has been around since the 70s, lithium.

And then there is the commercial momentum needed to replace an existing technology like lithium with something like graphene or aluminum air batteries. Cassettes lived on despite better technologies until the CD came along with vastly better quality, five times the storage capacity and similar manufacturing costs. I'm not sure if companies like Tesla would like a new technology one after investing in their huge battery factories.
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Old 04-12-2016, 17:30   #8
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Re: Thread for future battery technology.

There are some interesting advances in supercapacitors these days:

https://futurism.com/new-nanotech-co...ge-in-seconds/
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Old 04-12-2016, 18:03   #9
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Re: Thread for future battery technology.

Thanks. I believe Elon Musk has said that capacitors will eventually replace batteries.

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There are some interesting advances in supercapacitors these days:

https://futurism.com/new-nanotech-co...ge-in-seconds/
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Old 04-12-2016, 18:48   #10
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Re: Thread for future battery technology.

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Yep.

I am on the sailing wing of the CF portfolio so I care less about aux propulsion.

Still, makes me wonder how much theoretical energy could be gotten from say an AA equivalent diamond cell. After all e=mc2 and this implies heaps and heaps of heaps; but ... I would like to know in practical terms, if we could count on say 0.01W or rather 0.00000000001W ... ? etc.

b.
That's a bl**dy big diamond!.

FWIW, I did a bit of follow up research and came across this:

A diamond battery containing 20g of carbon-14 would deliver a small electrical charge of 300 joules per day. By contrast, an AA battery outputs 14,000 joules per day.

Note:
14,000 j/d = 0.16 Watts
300 j/d = 0.003 Watts
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Old 04-12-2016, 18:50   #11
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Re: Thread for future battery technology.

Diamond cell contains radioactive materials. Sorry but I think it'll be strictly controlled like atomic batteries used in pacemakers, arctic beacon light hides and satellite probes.

Otherwise the material for a dirty bomb can be had by going to Walmart and buying all the AA.
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Old 04-12-2016, 19:01   #12
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Re: Thread for future battery technology.

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Diamond cell contains radioactive materials. Sorry but I think it'll be strictly controlled like atomic batteries used in pacemakers, arctic beacon light hides and satellite probes.

Otherwise the material for a dirty bomb can be had by going to Walmart and buying all the AA.
Anything that is capable of shattering enough diamonds to release a problematic amount of "radioactive material" is going to be destructive enough in itself.
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Old 04-12-2016, 19:27   #13
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Re: Thread for future battery technology.

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Anything that is capable of shattering enough diamonds to release a problematic amount of "radioactive material" is going to be destructive enough in itself.
Problem with dirty bombs isn't the near term destructiveness but environmental contamination and public irrational fear.

Temp to burn diamond is pretty easily reached and even if not, it doesn't take much to score the coating - diamond cutters have been using impact for thousands of years.

I don't think it is bad environmentally - diamond coated radioactive carbon makes good sense for disposal. But I don't really trust government regulators or people not to do stupid things like buying a AA, score crack it then add it to someone's coffee.
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