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82 Current news of U.S. Department of Energy
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Fuel cells in operation: A closer look
11-10-2010
Measuring a fuel cell's overall performance is relatively easy, but measuring its components individually as they work together is a challenge. That's because one of the best experimental techniques for investigating the details of an electrochemical device while it's operating is x-ray ...
ORNL scientists reveal battery behavior at the nanoscale
20-09-2010
As industries and consumers increasingly seek improved battery power sources, cutting-edge microscopy performed at the Department of Energy's Oak Ridge National Laboratory is providing an unprecedented perspective on how lithium-ion batteries function. A research team led by ORNL's Nina ...
ORNL graphite foam technology licensed to LED North America
01-09-2010
Technology developed at the Department of Energy's Oak Ridge National Laboratory that extends the life of light-emitting diode lamps has been licensed to LED North America. The agreement signed exclusively licenses a graphite foam technology developed by James Klett of ORNL's Materials ...
Study shows deepwater oil plume in Gulf degraded by microbes
26-08-2010
In the aftermath of the explosion of BP's Deepwater Horizon drilling rig in the Gulf of Mexico, a dispersed oil plume was formed at a depth between 3,600 and 4,000 feet and extending some 10 miles out from the wellhead. An intensive study by scientists with the Lawrence Berkeley National ...
ORNL scientists help explain graphene mystery
25-08-2010
Nanoscale simulations and theoretical research performed at the Department of Energy's Oak Ridge National Laboratory are bringing scientists closer to realizing graphene's potential in electronic applications. A research team led by ORNL's Bobby Sumpter, Vincent Meunier and Eduardo ...
Wax, soap clean up obstacles to better batteries
Paraffin and surfactant oleic acid improve synthesis of lithium manganese phosphate electrodes
17-08-2010
A little wax and soap can help build electrodes for cheaper lithium ion batteries, according to a study in August 11 issue of Nano Letters. The one-step method will allow battery developers to explore lower-priced alternatives to the lithium ion-metal oxide batteries currently on the ...
Turning down the noise in graphene
10-08-2010
Graphene is a two-dimensional crystalline sheet of carbon atoms - meaning it is only one atom thick - through which electrons can race at nearly the speed of light - 100 times faster than they can move through silicon. This plus graphene's incredible flexibility and mechanical strength make ...
Unprecedented look at oxide interfaces reveals unexpected structures on atomic scale
10-08-2010
Thin layers of oxide materials and their interfaces have been observed in atomic resolution during growth for the first time by researchers at the Center for Nanophase Materials Sciences at the Department of Energy's Oak Ridge National Laboratory, providing new insight into the complicated ...
Highest X-ray energy used to probe materials
27-07-2010
Scientists for the first time have dived into the effect that an intense X-ray free electron laser (XFEL) has on materials. Using the Linac Coherent Light Source (LCLS) facility at the SLAC National Accelerator Laboratory, Lawrence Livermore scientists probed nitrogen gas at X-ray energies ...
For platinum catalysts, smaller may be better
05-07-2010
When it comes to metal catalysts, the platinum standard is, well, platinum! However, at about $2,000 an ounce, platinum is more expensive than gold. The high cost of the raw material presents major challenges for the future wide scale use of platinum in fuel cells. Research at the U.S. ...
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