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Print 99 comment(s) - last by sdoorex.. on Mar 23 at 1:33 PM


Iron phosphate  (Source: MIT)
The new battery isn't ready for commercial development, but it shows great promise

A new battery material created by researchers from the Massachusetts Institute of Technology (MIT) could lead to much faster recharge times for batteries.

MIT professor Gerbrand Ceder and researcher Byoungwoo Kang said the material can discharge energy and recharge nearly 100 times faster than batteries currently used in mobile phones.  Lithium-ion batteries are widely used in laptops as well, and could allow longer battery life and faster recharge time if a user is away from a power source for long durations of time.

"The ability to charge and discharge batteries in a matter of seconds rather than hours may open up new technological applications and induce lifestyle changes," Ceder and Kang sad in the latest edition of Nature.

The duo created a small battery that normally takes six minutes to charge, but used their new traffic flow to recharge the same battery in just 10 to 20 seconds.

It was widely believed the ions and electrons inside the battery moved too slowly, but the researchers noticed that wasn't the case.  They focused on how ions enter nano-scale tunnels aimed at moving electrons around the battery, and eventually created a lithium phosphate coating that helps push ions to the nano-scale tunnels.

Rechargeable lithium batteries used today have the ability to store high amounts of energy, but don't normally release that power, so they discharge very slowly.    

The battery has been supported with federal research money, and two companies have already licensed the technology, MIT announced.  It'd be possible to start mass producing the batteries in two to three years, the MIT researchers said. 



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RE: Good
By SublimeSimplicity on 3/13/2009 10:55:58 AM , Rating: 2
If you're going to recharge at home, two hours is probably more than acceptable. Considering the Tesla has a 53kWh battery pack, a 2 hour charge, with a 220v outlet would be 120A. That's within the realm of possibilities... an electrician (or homeowner with a fully paid life insurance policy) could install the additional circuit panel and outlet in the garage for this.

Where this tech would come into play would be the electric equivalent of gas station. Where a 5-10 minute recharge is required. Since these haven't been built and flowing these levels of charge would be their sole business model, the expense of the equipment wouldn't be as much of a factor.


RE: Good
By rcc on 3/13/2009 12:49:25 PM , Rating: 2
It's only money. Just install a second fixed 60kWH battery with a slightly higher voltage in your garage and charge it all day at a lower rate. Pull in, hook up, and do your 10 second transfer. Oh, and stand clear of the heat sinks. : )


RE: Good
By sdoorex on 3/13/2009 2:11:48 PM , Rating: 2
If the system requires a second battery, why not just save the second and wholly unneeded transfer cycle and just make the batteries swappable. Maybe make some special parking apparatus that when you park, it lowers the discharged battery out of the truck moves it to a charging dock and raises the charged battery into the truck. This would save on the lifespan of the batteries, plus you would have all that wasted thermal energy from the transfer and as such would be cheaper in the long run. Not to mention, this would make a battery leasing system very easy. Just have the stations have the same apparatus but in a drive-over fashion and you pay a monthly plan to be able you use the batteries. As for charging for the energy used, you could have a plan based upon either the number of swaps or you monitor how much energy is used to recharge each battery.

This plan is already being worked on in France by a group called Project Better Place and Renalt. Quoted from http://en.wikipedia.org/wiki/Electric_vehicle_batt... :
quote:
Project Better Place has begun in October 2007 and is working with Renault on development of exchangeable batteries (battery swapping)


RE: Good
By FITCamaro on 3/13/09, Rating: -1
RE: Good
By Bubbacub on 3/13/2009 4:20:53 PM , Rating: 5
dude you seriously need to chillout

your 'party' lost 4-5 months ago. get over it. why anyone would get so wound up supporting one group of politician scummers over another is beyond me.


RE: Good
By FITCamaro on 3/15/2009 12:08:06 AM , Rating: 2
My "party" is anyone who values their ability to live their lives in peace and without the government telling them what they can and cannot own.

I could care less about Republicans and Democrats.


RE: Good
By MrPoletski on 3/16/2009 7:20:38 AM , Rating: 2
quote:
My "party" is anyone who values their ability to live their lives in peace


Can Iraqis vote for your party so you can leave them in peace?

Yeah the party that masterminds the invasion of two countries and spearheads the marginalisation and provocation of a couple more is the party all about peace.

Or am I wrong and you're not a stereotypical republican?

Ron Paul 2012!


RE: Good
By sdoorex on 3/23/2009 1:33:13 PM , Rating: 1
The idea isn't to do it at every home or parking spot but at service stations. Home charging would be done much the same as it is now, you just plug into the wall. Much like gas stations as now. This would not be as extremely expensive as you are saying and would be very economical as the stations and operators could make a lot of money. This would also git rid of the range argument against EVs.

As to the government rant, I said nothing about the government doing anything other than that certain governments are looking into supporting it. I also don't support any party in particular since they only look out for their own interests, not the interest of the people, and as such would appreciate some respect as to refrain from politicizing the thread.

Sorry for taking so long to reply, I was out away from civilization for a week and a half.


RE: Good
By mindless1 on 3/14/2009 12:53:59 AM , Rating: 2
You're overlooking that many homes only have 100A in TOTAL service, and either way, at peak times like in the evening the grid just won't handle that. The last stretch of wiring from the breaker box to the outlet in the garage is the least of the issues, easier, quicker, cheaper, than any other factor.


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