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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

ORNL, Ohio company work together on new large-scale 3-D printing system

Posted at 1:06 pm February 19, 2014
By Oak Ridge National Laboratory Leave a Comment

ORNL and Cincinnati Inc. CRADA

From left are David Danielson, DOE assistant secretary for energy efficiency and renewable energy; Johnny Moore; DOE site office manager, Andy Jamison, Cincinnati Inc. CEO; and U.S. Rep. Chuck Fleischmann. (ORNL photo/Jason Richards)

Technology seeks to provide new capabilities for auto, aerospace, other U.S. industries

Oak Ridge National Laboratory is partnering with Cincinnati Inc., a manufacturer of high quality machine tools located in Harrison, Ohio, to develop a large-scale polymer additive manufacturing (3-D printing) system.

The partnership aims to accelerate the commercialization of a new additive manufacturing machine that can print large polymer parts faster and more cheaply than current technologies. The partnership agreement supports the U.S. Department of Energy’s Clean Energy Manufacturing Initiative to increase the efficiency of the U.S. manufacturing sector and ensure that innovative clean energy technologies continue to be developed in America.

ORNL is a DOE lab. [Read more…]

Filed Under: Business, Oak Ridge National Laboratory, Science, Top Stories, U.S. Department of Energy Tagged With: 3-D polymer printers, 3-D printing, additive manufacturing, Advanced Manufacturing Office, Andrew Jamison, Chuck Fleischmann, Cincinnati Inc., clean energy, Clean Energy Manufacturing Initiative, David Danielson, DOE, energy efficiency, manufacturing, Manufacturing Demonstration Facility, MDF, Oak Ridge National Laboratory, Office of Energy Efficiency and Renewable Energy, ORNL, polymer additive manufacturing, polymer parts, renewable energy, Thom Mason, U.S. Department of Energy

ORNL, Local Motors agree to pave way to world’s first 3-D printed vehicle

Posted at 8:25 am February 3, 2014
By Oak Ridge Today Staff Leave a Comment

Local Motors and ORNL on 3-D Printing

A new partnership between Local Motors and ORNL will explore vehicle design and construction using 3-D printing technologies. The project will make use of equipment at DOE’s Manufacturing Demonstration Facility, such as the large-scale additive manufacturing machine operated here by ORNL’s Peter LLoyd.

Local Motors Inc. and Oak Ridge National Laboratory have signed a new partnership to develop and deliver technology to produce the world’s first production 3-D printed vehicle.

The cooperative research and development agreement, or CRADA, between Local Motors and ORNL will explore ways to make vehicle construction more efficient—including by lower production time, costs, and part count—and raise standards for control, safety, aesthetics, and mechanical flexibility.

“The primary tool in this drive for efficiency is a combination of material science and cutting-edge advanced manufacturing techniques that are both additive and subtractive,” an ORNL press release said. ORNL is part of the U.S. Department of Energy’s national laboratory system.

“By invoking the principle of open-source, this partnership—and future efforts like it—will drive a true paradigm shift in hardware product development and automotive manufacturing technologies,” said Jay Rogers, co-founder and chief executive officers of Local Motors. “Just as exciting as the vision of delivering the first direct digital manufactured car is that we will be engaging future consumers to contribute and evangelize its creation. We are living in a time when speed to market trumps slow-going protectionism. Local Motors’ open development platform is what delivers this very speed.” [Read more…]

Filed Under: Business, Oak Ridge National Laboratory, Science, Top Stories Tagged With: 3-D print, 3-D printed vehicle, cooperative research and development agreement, DOE, Energy and Transportation Science Division, Jay Rogers, Local Motors, Lonnie Love, Manufacturing Demonstration Facility, Oak Ridge National Laboratory, Office of Energy Efficiency and Renewable Energy, Office of Science, ORNL, U.S. Department of Energy, UT-Battelle

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

Availability of the draft environmental assessment for off-site depleted uranium manufacturing (DOE/EA-2252)

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

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