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Rubber meets the road with new ORNL carbon, battery technologies

Posted at 9:54 pm August 27, 2014
By Oak Ridge National Laboratory Leave a Comment

Recycled Tire Battery Schematics

ORNL researchers’ goal is to scale up the recovery process and demonstrate applications as anodes for lithium-ion batteries in large-format pouch cells. (Image courtesy ORNL)

 

Recycled tires could see new life in lithium-ion batteries that provide power to plug-in electric vehicles and store energy produced by wind and solar, say researchers at Oak Ridge National Laboratory.

By modifying the microstructural characteristics of carbon black, a substance recovered from discarded tires, a team led by Parans Paranthaman and Amit Naskar is developing a better anode for lithium-ion batteries. An anode is a negatively charged electrode used as a host for storing lithium during charging.

The method, outlined in a paper published in the journal RSC Advances, has numerous advantages over conventional approaches to making anodes for lithium-ion batteries.

“Using waste tires for products such as energy storage is very attractive not only from the carbon materials recovery perspective but also for controlling environmental hazards caused by waste tire stock piles,” Paranthaman said.

The ORNL technique uses a proprietary pretreatment to recover pyrolytic carbon black material, which is similar to graphite but man-made. When used in anodes of lithium-ion batteries, researchers produced a small, laboratory-scale battery with a reversible capacity that is higher than what is possible with commercial graphite materials. [Read more…]

Filed Under: Front Page News, Oak Ridge National Laboratory, Science, U.S. Department of Energy Tagged With: Amit Naskar, anode, battery, carbon black, Center for Nanophase Materials Sciences, Craig Bridges, David Wood, Dipendu Saha, DOE, electric vehicles, energy, graphite, Jianlin Li, lithium ion batteries, Low-Cost Graphite Anodes For Lithium-Ion Batteries, Materials Sciences and Engineering Division, Miaofang Chi, Oak Ridge National Laboratory, Office of Basic Energy Sciences, Office of Science, ORNL, Parans Paranthaman, pouch cells, recycled tires, RSC Advances, Sam Akato, Tailored Recovery of Carbons from Waste Tires for Enhanced Performance as Anodes in Lithium-Ion Batteries, Technology Innovation Program, U.S. Department of Energy, Yunchao Li, Zhonghe Bi

‘Double-duty’ electrolyte enables new chemistry for longer-lived batteries

Posted at 8:53 pm May 12, 2014
By Oak Ridge National Laboratory Leave a Comment

ORNL Battery Chemistry

When ORNL researchers incorporated a solid lithium thiophosphate electrolyte into a lithium-carbon fluoride battery, the device generated a 26 percent higher capacity than what would be its theoretical maximum if each component acted independently. (Image courtesy ORNL)

 

Researchers at Oak Ridge National Laboratory have developed a new and unconventional battery chemistry aimed at producing batteries that last longer than previously thought possible.

In a study published in the Journal of the American Chemical Society, ORNL researchers challenged a long-held assumption that a battery’s three main components—the positive cathode, negative anode, and ion-conducting electrolyte—can play only one role in the device.

The electrolyte in the team’s new battery design has dual functions: It serves not only as an ion conductor but also as a cathode supplement. This cooperative chemistry, enabled by the use of an ORNL-developed solid electrolyte, delivers an extra boost to the battery’s capacity, and extends the lifespan of the device.

“This bi-functional electrolyte revolutionizes the concept of conventional batteries and opens a new avenue for the design of batteries with unprecedented energy density,” said ORNL’s Chengdu Liang. [Read more…]

Filed Under: Front Page News, Oak Ridge National Laboratory, Science, U.S. Department of Energy Tagged With: anode, batteries, battery chemistry, cathode, Center for Nanophase Materials Sciences, Chengdu Liang, CNMS, conductor, Division of Materials Sciences and Engineering, DOE, electrolyte, Ezhiylmurugan Rangasamy, Gayatri Sahu, Journal of the American Chemical Society, Juchuan Li, lithium carbon fluoride battery, lithium thiophosphate electrolyte, Nancy Dudney, Nanoscale Science Research Centers, NSRC, Oak Ridge National Laboratory, Office of Science, ORNL, Pushing the Theoretical Limit of Li-CFx Batteries: A Tale of Bi-functional Electrolyte, U.S. Department of Energy

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Classifieds

Public Notice: Comment period extended for Draft EA for Lithium Processing Facility at Y-12

EXTENSION OF THE COMMENT PERIOD FOR THE DRAFT ENVIRONMENTAL ASSESSMENT FOR THE LITHIUM PROCESSING … [Read More...]

Public Notice: Draft Environmental Assessment Available for Lithium Production Facility at Y-12

AVAILABILITY OF THE DRAFT ENVIRONMENTAL ASSESSMENT FOR THE LITHIUM PROCESSING FACILITY AT THE Y-12 … [Read More...]

Availability of the Final Environmental Assessment for the Oak Ridge Enhanced Technology and Training Center (ORETTC) (DOE/EA-2144), Finding of No Significant Impact, and Wetland Statement of Findings

The U.S. Department of Energy (DOE) National Nuclear Security Administration (NNSA) announces the … [Read More...]

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