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HelicopterMain Discussion › AMAZING! Batterys advance to allow 60 minute flight times!
06-05-2009 11:11 PM  8 years agoPost 1
VooDooX

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http://www.telegraph.co.uk/sciencea...led-by-air.html

scientists say the revolutionary 'STAIR' (St Andrews Air) battery could now pave the way for a new generation of electric cars, laptops and mobile phones.

The cells are charged in a traditional way but as power is used or 'discharged' an open mesh section of battery draws in oxygen from the surrounding air.

This oxygen reacts with a porous carbon component inside the battery, which creates more energy and helps to continually 'charge' the cell as it is being discharged.

By replacing the traditional chemical constituent, lithium cobalt oxide, with porous carbon and oxygen drawn from the air, the cell is much lighter than current batteries.

And as the cycle of air helps re-charge the battery as it is used, it has a greater storage capacity than other similar-sized cells and can emit power up to 10 times longer.

Professor Peter Bruce of the Chemistry Department at the University of St Andrews, said: "The benefits are it's much smaller and lighter so better for transporting small applications.

"The size is also crucial for anyone trying to develop electric cars as they want to keep weight down as much as possible.

"Storage is also important in the development of green power. You need to store electricity because wind and solar power is intermittent."

crazyness

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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06-05-2009 11:44 PM  8 years agoPost 2
VooDooX

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lol noone has anything to say about this? its pretty crazy imagine 60 minute flight times on battery power? AND THE HELI IS MUCH LIGHTER ALSO? Seriously people this is astonishing and will defiantly kill nitro except for those few diehards

so basicly this battery is

1.lighter
2.higher capacity
3. lasts 10 times as long

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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06-05-2009 11:46 PM  8 years agoPost 3
InvertedDude

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06-05-2009 11:48 PM  8 years agoPost 4
VooDooX

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thats what it says you know how tired your hands would be after 50 minutes of hardcore 3D?! PLUS the heli is more agile because its lighter AND the battery has more capacity so its probably like a 5 minute flight turns to a 70 minute flight

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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06-05-2009 11:49 PM  8 years agoPost 5
InvertedDude

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06-05-2009 11:49 PM  8 years agoPost 6
Nashville

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this is astonishing and will defiantly kill nitro
I suggest seeing where this goes, safety, durability, overall real life performance before suggesting anyone sell their i.c. toys. Seems pretty early to predict the demise of nitro. And have we heard that before?

I was Spektrum when Spektrum wasn't cool

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06-05-2009 11:50 PM  8 years agoPost 7
VooDooX

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well it is DEFIANTLY coming 1 day nitro will be gone i dont know when and probably not for a while but one day...i mean seriously if they develop a battery that lasts 70 minutes is lighter then your nitro engine and gas (pretty much guaranteed) and emits more power then your engine why on earth would you stay nitro? that would be like flying hardcore 3D on sport servos when HV8717's are way better the only thing that may kill this is charge times but if you have 2 batts then your pretty much set for the day

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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06-06-2009 12:00 AM  8 years agoPost 8
Philicopter

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This is very great news......but......like the Lipos and the Avant it will likely be quite some time before they trickle down to us RC'rs and will of course, at first, be a very expensive venture when it happens. Especially if they don't allow third party companies to produce and market them to their needs. Still nice to here about major advancements to will some day better the hobby.

Phil

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Thunder Power

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06-06-2009 12:09 AM  8 years agoPost 9
DKNguyen

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Is it credible? Because the thing about flow of air reacting with carbon so it recharges the battery as you are draining it sounds like bunk to me.

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06-06-2009 12:12 AM  8 years agoPost 10
Yug

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Be interesting to see where this goes. Remember reading report on this last year but at the time, it was rather sketchy as to whether the electrode chemistry was sufficient to sustain large migration of ions. We'll see. However it's good that there are now some emerging technologies that claim to be competative.

Vegetable rights and Peace

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06-06-2009 12:14 AM  8 years agoPost 11
VooDooX

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i dunno DKN i read it online theres a link at the top of original post

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06-06-2009 12:18 AM  8 years agoPost 12
NZ_Nitro

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bollocks!!!!!
ell it is DEFIANTLY coming 1 day nitro will be gone
why would I want to change to electric? I love the sound and smell of a glow motor I love tinkering with them and my asp 180 4 stroke well its just a beast electrics have a place but will never out place glow totally

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06-06-2009 12:28 AM  8 years agoPost 13
VooDooX

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again to compete tho you will need electric if there THAT much better then nitros otherwise it would be like flying a hbk against a synergy good luck i too love nitro but hey progress is progress im sure the steam engine finantics felt the same way sure there still around but you will never use one you must admit if a faster better lighter and cheaper power source that lasts 10 times as long as even a nitro comes out bye bye nitro dont try to argue that

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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06-06-2009 12:38 AM  8 years agoPost 14
LaurenceGough

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I would love to see some new tech, unfortunately it seems all new tech is being VERY limited in use and applications.

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06-06-2009 12:48 AM  8 years agoPost 15
Aaron29

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Forgive me if I delay my excitement.

The electrics fanboys have been saying for years how this or that new technology would make nitro obsolete.

We were promised great things with LiPo. And A123. While great, they are hardly a replacement for IC engines.

This may very well be real but I'm not about to start panting over it until I see it take over the hobby.

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06-06-2009 12:52 AM  8 years agoPost 16
Aaron29

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This oxygen reacts with a porous carbon component inside the battery, which creates more energy and helps to continually 'charge' the cell as it is being discharged.
Not to be alarmist but is consuming oxygen and calling it "green power" a good thing? How would that be environmentally better than turning O2 into CO2 the way an IC engine does.

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06-06-2009 12:54 AM  8 years agoPost 17
DougsRC

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otherwise it would be like flying a hbk against a synergy good luck
I love my little King VooDoo I'm all for new battery tech, but if a guy loves nitro-- he loves nitro, the smells, the sound. I'm an electric guy myself and after 5 minutes, I'm ready to land Its more about having Fun and doing what you enjoy, not about how long you can fly, who's got the better heli-- Whoop-Dee-Do. Very few of us will EVER compete Did I say I'm all for new bat. technology

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06-06-2009 02:02 AM  8 years agoPost 18
DKNguyen

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It sounds like this battery vs other batteries is like an air-breathing engine vs a rocket. A normal battery carries all the chemicals it uses onboard while this battery replaces one of these with oxygen. So discharging consumes oxygen from the air, and recharging releases the oxygen back into the air.

Discharging causes the oxygen to combine with the Lithium ions producing Lithium oxide and current. Recharging consumes current while producing lithium ions and releases the oxygen back into the air.

http://www.newscientist.com/article...the-energy.html

It sounds like you might have to force feed them air to get power levels to get mechanical motion. These batteries produce an oxygen deprived region of air around them without a vacuum to draw in new oxygen-enriched air, unlike engines which automatically make a vacuum to draw in more air. Turbocharging them might be necessary.

Also makes you curious about what might happen if the battery breathes dirty air. Engines are just hunks of metal and the oxygen burns before anything else in the air, but isn't is possible that the Lithium might react with something it's not supposed to when opened to the atmopshere?

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06-06-2009 02:42 AM  8 years agoPost 19
Aaron29

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Recharging consumes current while producing lithium ions and releases the oxygen back into the air.
OK, that makes me feel a bit better. Although the recharging process would still likely involve the burning of fossil fuels. At least until people overcome the fear of using nuclear power. Wind/water/solar power just hasn't caught on the way it should have.

I LOVE the idea of a little turbocharged battery. I wonder just how much oxygen we are talking about this consuming.

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06-06-2009 02:47 AM  8 years agoPost 20
Aaron29

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Engines are just hunks of metal and the oxygen burns before anything else in the air, but isn't is possible that the Lithium might react with something it's not supposed to when opened to the atmopshere?
Actually this is a problem with IC engines as well. The EGR is all about lowering temperatures so that you don't create as many nitrogen-related combustion products. Nitrogen isn't totally inert in the combustion process. At least not at the temps you see inside an engine.

Not sure how nitrogen and lithium play together. And if the battery gets hot or not? Shoot I imagine it would.

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HelicopterMain Discussion › AMAZING! Batterys advance to allow 60 minute flight times!
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