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New Battery Lets Electric Cars Go 200 Miles on a 10-Minute Charge
Ian2day.com
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User ID: 525205
11-22-2019 03:49 PM

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Post: #1
horn New Battery Lets Electric Cars Go 200 Miles on a 10-Minute Charge
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New Battery Lets Electric Cars Go 200 Miles on a 10-Minute Charge

[Image: BAttery-charging-1068x601.jpg]

Electric vehicles could decarbonize one of the most polluting sectors of our economy, but they’re bedeviled by one major problem: range anxiety. A new battery design that can charge in just 10 minutes promises to tackle that problem head on.

In 2018, the median range for electric cars in the US was just 125 miles, and typical charging times for top-selling models was between 7 and 12 hours, according to CB Insights. That compares with the 400 to 600 miles your average gasoline-powered sedan can cover on a single tank, which takes less than 5 minutes to refuel.

While some high–end electric vehicles (like the most expensive Teslas) are starting to approach those kinds of ranges, it still takes around 50 minutes for a full charge using the most powerful superchargers available. That’s a long time to hang around if you’re doing a cross-country trip that requires multiple pit stops.

The result is range anxiety, where people worry about running out of juice and facing delays due to the long time it takes to recharge their cars. There are two ways to tackle the problem: building higher-capacity batteries or charging existing ones faster.

Bigger batteries are a tricky problem, because vehicles face a balancing act between weight and capacity. After a certain point the extra weight of batteries cancels out the boost in power they provide. There’s plenty of work into batteries with better energy density—how much charge they can hold for a specific weight—but there aren’t any major breakthroughs on the horizon.

Faster charging is also limited by the fact that pumping too much power into batteries in a short period of time can damage them. But new research reported in Joule showed that temporarily increasing the temperature of lithium-ion batteries during charging made it possible to charge them quickly without negative side effects.

“We demonstrated that we can charge an electrical vehicle in 10 minutes for a 200- to 300-mile range,” Chao-Yang Wang, a professor at Pennsylvania State University who led the research, said in a press release. “And we can do this maintaining 2,500 charging cycles, or the equivalent of half a million miles of travel.”

It’s long been known that charging at higher temperatures helps prevent the damaging build-up of lithium plating that happens during fast charging. But it was thought to be unwise to run lithium-ion batteries at high temperatures because it causes their materials to react with each other, degrading the battery.

The researchers found, however, that briefly heating the battery to 140°F during charging and then rapidly cooling it back to room temperature again got around both these concerns, creating a long-lived battery that can be charged to 80 percent in just 10 minutes.

While there’s still a long way to go until the battery makes it into vehicles, Clare Grey, a professor at the University of Cambridge, told the Guardian that the research showed the importance of challenging conventional wisdom.

“The interesting point is that it suggests that the positive effects of heating—reduced lithium plating—outweigh the considerable degradation processes that kick in at higher temperatures,” she said.

Whether the technology can be scaled up remains to be seen, though, and history is littered with promising battery designs that never made it off the lab bench. The tests were done on much smaller batteries than would be used in cars, so it’s not clear if heating larger packs could have unforeseen consequences.

But the team is confident and says they are now looking to cut the charging time even further to five minutes, which puts them on equal footing with the time taken to refuel a gasoline car. Wang thinks the technology will be in vehicles within two to three years.

“If we have a ubiquitous fast-charging infrastructure on the roadside, drivers need no longer worry about the cruise range,” he told the Guardian. “After driving 200-300 miles per charge, one can pick up another 200-300 miles by charging for 10 minutes.”

Image Credit: Chao-Yang Wang, Pennsylvania State University

https://singularityhub.com/2019/11/04/ne...te-charge/

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LoP Guest
lop guest
User ID: 524967
11-22-2019 04:00 PM

 




Post: #2
RE: New Battery Lets Electric Cars Go 200 Miles on a 10-Minute Charge
Be weary of these things, these announcements they are plentiful. Unless there's an actual working prototype in existence that can be tested in real time, if not, then all this is just another piece of marketing blah...
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Unincorporated Human
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11-22-2019 06:04 PM

Posts: 638




Post: #3
RE: New Battery Lets Electric Cars Go 200 Miles on a 10-Minute Charge
Pumping alot of energy into a battery quickly will increase the temperature of the battery all on it's own.

I like the idea of electric cars but I know that they are just unrealistic and are more of a novelty item at this point in time because of the limitations posed by current battery technology.

I don't know if a practical solution is even physically possible.

To match the practicality of gasoline, a car would have to be able to go at least 300 miles on a charge and then be able to recharge in 5 minutes or less and the batteries would have to last at least 10 years without losing more than 10 percent of their capacity.

That is a tall order.

I fear not pain nor death, my only fear is living without honor.
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daersoulkeeper
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User ID: 116126
11-22-2019 10:59 PM

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Post: #4
RE: New Battery Lets Electric Cars Go 200 Miles on a 10-Minute Charge
who else wants to sit at the gas station for 10 minutes?
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LoP Guest
lop guest
User ID: 524967
11-22-2019 11:27 PM

 




Post: #5
RE: New Battery Lets Electric Cars Go 200 Miles on a 10-Minute Charge
lifeisalie  Wrote: (11-22-2019 06:06 PM)
the mining of lithium is far worse on the environment than drilling for oil

Jhikpghf
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LoP Guest
lop guest
User ID: 524967
11-22-2019 11:28 PM

 




Post: #6
RE: New Battery Lets Electric Cars Go 200 Miles on a 10-Minute Charge
daersoulkeeper  Wrote: (11-22-2019 10:59 PM)
who else wants to sit at the gas station for 10 minutes?

While others wait in a 10 minute queue eeek
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Bao2
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11-22-2019 11:56 PM

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Post: #7
RE: New Battery Lets Electric Cars Go 200 Miles on a 10-Minute Charge
[Image: Electric-car-1909-vs-2019.jpg]
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Xeno Heresy
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User ID: 434473
11-23-2019 02:05 AM

Posts: 3,681




Post: #8
RE: New Battery Lets Electric Cars Go 200 Miles on a 10-Minute Charge
https://en.wikipedia.org/wiki/Glass_battery

I hope that reaches market. The people working on it have make a lot of grand claims about it's performance and supposedly have working prototypes but the rest of battery industry seems sceptical.

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