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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

ORNL microscopy system delivers real-time view of battery electrochemistry

Posted at 9:52 pm February 23, 2014
By Oak Ridge National Laboratory Leave a Comment

ORNL Battery Electrochemistry

A new in situ transmission electron microscopy technique enabled ORNL researchers to image the snowflake-like growth of the solid electrolyte interphase from a working battery electrode. (Photo courtesy ORNL)

Using a new microscopy method, researchers at Oak Ridge National Laboratory can image and measure electrochemical processes in batteries in real time and at nanoscale resolution.

Scientists at ORNL used a miniature electrochemical liquid cell that is placed in a transmission electron microscope to study an enigmatic phenomenon in lithium-ion batteries called the solid electrolyte interphase, or SEI, as described in a study published in Chemical Communications.

The SEI is a nanometer-scale film that forms on a battery’s negative electrode due to electrolyte decomposition. Scientists agree that the SEI’s formation and stability play key roles in controlling battery functionality. But after three decades of research in the battery field, details of the SEI’s dynamics, structure, and chemistry during electrochemical cycling are still debated, stemming from inherent difficulties in studying battery electrode materials in their native liquid environment.

“We’ve used this novel in situ method to understand the dynamics of how this layer forms and evolves during battery operation,” said Raymond Unocic, ORNL research and development staff scientist. [Read more…]

Filed Under: Front Page News, Oak Ridge National Laboratory, Science, U.S. Department of Energy Tagged With: battery, battery electrochemistry, battery electrode, battery electrolyte, Center for Nanophase Materials Sciences, Chemical Communications, DOE, electrochemical cell, electrochemical processes, electrode, electron microscope, FIRST Energy Frontier Research Center, Ilke Arslan, Karren More, lithium ion batteries, Nancy Dudney, Nigel Browning, Oak Ridge National Laboratory, Office of Basic Energy Sciences, Office of Energy Efficiency and Renewable Energy, ORNL, Pacific Northwest National Laboratory's Lucas Parent, Raymond Unocic, Robert Sacci, SEI, solid electrolyte interphase, U.S. Department of Energy

Woman alleges excessive force, brutality at jail; files $17.6 million lawsuit

Posted at 12:36 am September 4, 2013
By John Huotari Leave a Comment

A multi-million dollar federal lawsuit filed last month and amended Tuesday alleges an Anderson County woman with multiple sclerosis was sprayed with chemical spray in the face and eyes at least twice while restrained and had her forehead slammed into a cement wall after she was arrested for public intoxication at her home earlier this year.

The lawsuit seeks $17.6 million for Heather Bolling, 30. She accused Anderson County jailers of using excessive force and brutality, and she alleged she was severely and permanently injured after she was arrested on Oak Road near Norris on April 28 and taken to the Anderson County Detention Facility in Clinton. [Read more…]

Filed Under: Anderson County, Anderson County, Federal, Government, Police and Fire, Top Stories Tagged With: Anderson County, Anderson County Detention Facility, Anderson County Sheriff's Department, Arthur F. Knight III, assault, audio, battery, brutality, chemical spray, conspiracy, excessive force, George T. Underwood Jr., Heather Bolling, infliction of emotional distress, lawsuit, multiple sclerosis, Oak Road, Paul White, special needs, spoiling evidence, U.S. District Court, video

New all-solid sulfur-based battery outperforms lithium-ion technology

Posted at 7:00 am June 6, 2013
By Oak Ridge National Laboratory 4 Comments

ORNL Lithium-Sulfur Battery

A new all-solid lithium-sulfur battery developed by an Oak Ridge National Laboratory team led by Chengdu Liang has the potential to reduce cost, increase performance, and improve safety compared with existing designs. (Submitted photo)

Scientists at 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.

“Our approach is a complete change from the current battery concept of two electrodes joined by a liquid electrolyte, which has been used over the last 150 to 200 years,” said Chengdu Liang, lead author on the ORNL study published this week in Angewandte Chemie International Edition. [Read more…]

Filed Under: Oak Ridge National Laboratory, Science, Top Stories Tagged With: all-solid battery, Angewandte Chemie International Edition, battery, Center for Nanophase Materials Sciences, Chengdu Liang, CNMS, DOE, electrolyte, ions, lithium anode, lithium metal oxides, Lithium Polysulfidophosphates: A Family of Lithium-Conducting Sulfur-Rich Compounds for Lithium-Sulfur Batteries, lithium-ion, lithium-ion technologies, lithium-sulfur battery, mAh, milliamp-hours per gram, Nancy Dudney, Nanoscale Science Research Centers, Oak Ridge National Laboratory, Office of Energy Efficiency and Renewable Energy, Office of Science, ORNL, sulfur, sulfur-rich cathode, U.S. Department of Energy, Vehicle Technologies Office, Wujun Fu, Zengcai Liu, Zhan Lin

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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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