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ORNL-grown oxygen ‘sponge’ presents path to better catalysts, energy materials

Posted at 7:30 am August 29, 2013
By Oak Ridge National Laboratory Leave a Comment

ORNL Oxygen Sponge

This schematic depicts a new ORNL-developed material that can easily absorb or shed oxygen atoms. (Photo courtesy ORNL)

Scientists at Oak Ridge National Laboratory have developed a new oxygen “sponge” that can easily absorb or shed oxygen atoms at low temperatures. Materials with these novel characteristics would be useful in devices such as rechargeable batteries, sensors, gas converters, and fuel cells.

Materials containing atoms that can switch back and forth between multiple oxidation states are technologically important but very rare in nature, said ORNL’s Ho Nyung Lee, who led the international research team that published its findings in Nature Materials. [Read more…]

Filed Under: Oak Ridge National Laboratory, Science, Top Stories Tagged With: Advanced Photon Source, Argonne National Laboratory, brownmillerite, Center for Nanophase Materials Science, Chad Folkman, Dillon Fong, Dongwon Shin, Hiromichi Ohta, Ho Nyung Lee, Hokkaido University, Hyoungjeen Jeen, I-Cheng Tung, John Freeland, Matthew Chisholm, Michael Biegalski, Nanoscale Science Research Centers, Nature Materials, NSRC, Oak Ridge National Laboratory, Office of Science, ORNL, oxidation, oxygen atoms, oxygen sponge, perovskite, redox, reduction-oxidation, Reversible redox reactions in an epitaxially stabilized SrCoOx oxygen sponge, strontium cobaltite, U.S. Department of Energy, Woo Seok Choi

ORNL recipe for oxide interface perfection opens path to novel materials

Posted at 11:30 am November 25, 2012
By Oak Ridge National Laboratory Leave a Comment

By tweaking the formula for growing oxide thin films, researchers at the Oak Ridge National Laboratory achieved virtual perfection at the interface of two insulator materials.

This finding, published in the journal Advanced Materials, could have significant ramifications for creation of novel materials with applications in energy and information technologies, leading to more efficient solar cells, batteries, solid oxide fuel cells, faster transistors, and more powerful capacitors.

[Read more…]

Filed Under: Science, Top Stories Tagged With: Advanced Materials, Advanced Photon Source, Argonne National Laboratory, Gyula Eres, Ho Nyung Lee, insulators, lanthanum aluminate, Materials Science and Technology Division, Oak Ridge National Laboratory, ORNL, oxide thin films, oxides, strontium titanate

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