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Scientists at the Department of Energy's Oak Ridge National Laboratory have designed and tested an all-solid lithium-sulfur battery with approximately four times the energy density of conventional lithium-ion technologies that power today's electronics.
The ORNL battery design, which uses abundant low-cost elemental sulfur, also addresses flammability concerns experienced by other chemistries.
The new ionically-conductive cathode enabled the ORNL battery to maintain a capacity of 1200 milliamp-hours (mAh) per gram after 300 charge-discharge cycles at 60 degrees Celsius. For comparison, a traditional lithium-ion battery cathode has an average capacity between 140-170 mAh/g. Because lithium-sulfur batteries deliver about half the voltage of lithium-ion versions, this eight-fold increase in capacity demonstrated in the ORNL battery cathode translates into four times the gravimetric energy density of lithium-ion technologies, explained Liang.
Although the team's new battery is still in the demonstration stage, Liang and his colleagues hope to see their research move quickly from the laboratory into commercial applications. A patent on the team's design is pending.
New all-solid sulfur-based battery outperforms lithium-ion technology
New all-solid sulfur-based battery outperforms lithium-ion technology
Scientists at the Department of Energy's Oak Ridge National Laboratory have designed and tested an all-solid lithium-sulfur battery with approximately four times the energy density of conventional lithium-ion technologies that power today's electronics.
The ORNL battery design, which uses abundant low-cost elemental sulfur, also addresses flammability concerns experienced by other chemistries.
The new ionically-conductive cathode enabled the ORNL battery to maintain a capacity of 1200 milliamp-hours (mAh) per gram after 300 charge-discharge cycles at 60 degrees Celsius. For comparison, a traditional lithium-ion battery cathode has an average capacity between 140-170 mAh/g. Because lithium-sulfur batteries deliver about half the voltage of lithium-ion versions, this eight-fold increase in capacity demonstrated in the ORNL battery cathode translates into four times the gravimetric energy density of lithium-ion technologies, explained Liang.
Although the team's new battery is still in the demonstration stage, Liang and his colleagues hope to see their research move quickly from the laboratory into commercial applications. A patent on the team's design is pending.
Imagine a electric car with 4 times the range!
Let's hear the down side. Oh ya--science never tells ya that til it's too late.
Sulfur-based tech the answer to burnable lithium-ion batteries? | Cutting Edge - CNET NewsScientists with the Department of Energy have designed a new type of battery that they say outpaces the ubiquitous lithium-ion batteries in flammability, cost, and ability to hold a charge.
We've all heard stories about exploding cell phone and laptop batteries. A person is just walking down the street with his phone in his pocket and next thing he know his pants are ablaze.
The specific culprit batteries that cause such fiery incidents are lithium-ion batteries, which are known to have issues with heat. So, why can't there be chargeable batteries that are immune to overheating? There may be.
Though scientists have been working for decades on a fix for lithium-ion battery debacles, it wasn't until recently that ORNL was able to figure out how to create an all-solid battery that combines a sulfur-rich cathode, lithium anode, and solid electrolyte material. Lithium-ion batteries use liquid electrolytes, which are what cause the flammability issues.
"Sulfur is practically free," Liang said. "Not only does sulfur store much more energy than the transition metal compounds used in lithium-ion battery cathodes, but a lithium-sulfur device could help recycle a waste product into a useful technology."
Tesla Model S Range and Charging: Some Clarifications | PluginCars.com
Speaking of Tesla range, how many miles do you get for 20 minutes on the company’s new 120-kilowatt Superchargers? In a conference call, CEO Elon Musk said such a charge will yield three hours of driving. “You can charge up to two-thirds in just over 20 minutes,” Musk said. “That means driving for three hours, stopping the normal amount of time on a road trip, grabbing food, and getting back on the road.” That claim is repeated here.
Ah, but Paul Mutolo, a fuel-cell chemist and director of external partnerships at Cornell University’s Energy Materials Center, says that, using Tesla’s own data, he comes up with a 20-minute charge range of only 141 miles. “You get 4.4 miles per kilowatt-hour added to the battery,” Mutolo said. In 20 minutes, you’re only going to get three hours of driving if you’re average speed is 47 mph.” In other words, don’t expect three hours of travel on the limited-access highways hosting the Superchargers.
There’s no doubt that you’d get a full charge in an hour from a Supercharger, but who wants to spend an hour at a rest area, even if it has a restaurant? This is about topping up and heading out. Tesla’s Hendriks tells me, “The whole idea of Supercharging is that it takes the same amount of time to Supercharge your battery as it does to stop for a quick bite to eat and a pit stop.”
Let's hear the down side. Oh ya--science never tells ya that til it's too late.
What's the added downside?
Eon musk will likely be able to charge one of these with one of his super charges in 20 minutes. Is it longer then filling up the tank? YES. But 600 instead of 150 will make it worth the longer wait.
Let's hear the down side. Oh ya--science never tells ya that til it's too late.
What's the added downside?
Eon musk will likely be able to charge one of these with one of his super charges in 20 minutes. Is it longer then filling up the tank? YES. But 600 instead of 150 will make it worth the longer wait.
Yo Mr. Science guy. Everything has a down side.
What's the added downside?
Eon musk will likely be able to charge one of these with one of his super charges in 20 minutes. Is it longer then filling up the tank? YES. But 600 instead of 150 will make it worth the longer wait.
Yo Mr. Science guy. Everything has a down side.
Are there negatives? YES. Simply that most people will rely on the grid to power their cars. This means that if the power go's out=opps.
Besides that I don't see to many negatives.
You can thank science for
-Your computer
-Your electricy
-Your longer life
-Higher standards of life you enjoy
-million other things
I have a nice buggy for sell. In the meantime, the rest of us will move on into the future.
Yes, the charging stations that Mr. Musk will put up will be connected to the grid. And, when no one is charging, they will put power on the grid, and when several are charging, they will pull power off the grid. And, as others extend the range of their vehicles, they will adapt the type of plug in and charging system from Tesla, and use the Tesla stations.
Yo Mr. Science guy. Everything has a down side.
Are there negatives? YES. Simply that most people will rely on the grid to power their cars. This means that if the power go's out=opps.
Besides that I don't see to many negatives.
You can thank science for
-Your computer
-Your electricy
-Your longer life
-Higher standards of life you enjoy
-million other things
like providing our govt with the tools to spy on us with ? You don't get this do you ?
BTW: with hydrogen produced from renewables, there is NO GRID EXPANSION required to shift vehicles to electric.. Engineering wise -- hydrogen fuel cells are the hands down choice..
]BTW: with hydrogen produced from renewables, there is NO GRID EXPANSION required to shift vehicles to electric.. Engineering wise -- hydrogen fuel cells are the hands down choice..
At present, the batteries outdo the hydrogen storage available. I have nothing at all against the idea of hydrogen fuel cells. But at present, lithium ion batteries have a higher energy storage rate at a reasonable cost than any hydrogen storage that is presently available.
