Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Brookhaven Lab Chemists Receive Patents for Fuel-Cell Catalysts

(From left) Brookhaven Lab chemists Kotaro Sasaki, Miomir Branko Vukmirovic, and Radoslav Adzic work on developing catalysts for fuel cells.
(From left) Brookhaven Lab chemists Kotaro Sasaki, Miomir Branko Vukmirovic, and Radoslav Adzic work on developing catalysts for fuel cells.

Abstract:
New catalysts reduce costly platinum use and increase its effectiveness in fuel cells

Brookhaven Lab Chemists Receive Patents for Fuel-Cell Catalysts

Upton, NY | Posted on May 21st, 2010

Chemists at the U.S. Department of Energy's Brookhaven National Laboratory have received three patents for developing catalysts to accelerate chemical reactions in fuel cells. The newly patented catalysts, as well as a method for making a particular type of catalyst with a thin layer of platinum, could greatly reduce the cost and increase the use of fuel cells in electric vehicles. The catalysts and the technique are available for licensing.

Platinum is the most efficient catalyst for fuel cells. However, the platinum-based catalysts are expensive, unstable, and have low durability. The newly patented catalysts have high activity and stability, while containing much less platinum than the amount used in current fuel cells, so their cost is reduced.

"Fuel cells are expected to become a major source of clean energy that can impact both transportation and stationary power sectors," said Radoslav Adzic, the principal researcher in all three patents. "They have several advantages for automotive applications and can be used extensively in electric cars if the technology can be made to work efficiently and economically. Developing these electrocatalysts is a big step in that direction."

Several types of renewable fuel - such as hydrogen, ethanol or methanol - may be used in fuel cells. A hydrogen fuel cell, for example, converts hydrogen and oxygen into water, and, in the process, produces electricity. Hydrogen is oxidized by separating into negatively charged electrons and positively charged ions with the help of a catalyst at the fuel cell's negative pole, the anode. Electrons then travel to the positive pole, the cathode, creating electricity with their movement. At the cathode, with the aid of a catalyst, oxygen gains electrons, resulting in oxygen reduction, and combines with hydrogen ions forming water, the only byproduct of a hydrogen/oxygen fuel cell.

Two of the Brookhaven chemists' patents were awarded for catalysts that speed up oxygen reduction. One is composed of a thin layer of platinum on palladium nanoparticles, which is more efficient than current catalysts. The other includes metal oxides, such as niobium oxide and ruthenium oxide, with a thin layer of platinum. The patent also covers a unique method for depositing a thin layer of platinum on the metal-oxide catalysts.

Compared to the patented platinum-palladium catalyst, the metal oxides combined with platinum are more stable and cost-effective, although the catalytic efficiency is not as high. Thus, the patented catalysts are complementary and can be tailored for various applications.

The scientists also received a patent for adding gold clusters to platinum-based catalysts. In the reactions during the stop-and-go driving of an electric car, platinum dissolves, which reduces its efficiency as a catalyst. But the researchers have overcome this problem by adding a very small amount of gold to the platinum-based catalyst. With the addition of gold, the platinum was kept intact during an accelerated stability test, which mimicked the stop-and-go conditions of an electric car. The gold clusters protected the platinum from being oxidized, which stabilized the platinum, making possible improved platinum-based catalysts.

U.S. patent 7,691,780 B2 for the development of platinum-palladium catalysts, was issued to Brookhaven Lab's Adzic and Miomir Branko Vukmirovic, along with Junliang Zhang and Yibo Mo, formerly of Brookhaven. Adzic, Vukmirovic and Kotaro Sasaki of Brookhaven Lab received title to U.S. patent 7,704,918 for metal oxide-platinum catalysts and their unique method of making them. Adzic and Zhang received U.S. patent 7,704,919 for adding gold clusters to platinum-based electrocatalysts.

The Department of Energy's Office of Science and its Office of Energy Efficiency and Renewable Energy funded the research that led to these patented technologies. For information about licensing them, contact Kimberley Elcess at 631 344-4151, or

####

About Brookhaven National Laboratory
One of ten national laboratories overseen and primarily funded by the Office of Science of the U.S. Department of Energy (DOE), Brookhaven National Laboratory conducts research in the physical, biomedical, and environmental sciences, as well as in energy technologies and national security. Brookhaven Lab also builds and operates major scientific facilities available to university, industry, and government researchers. Brookhaven is operated and managed for DOE's Office of Science by Brookhaven Science Associates, a limited-liability company founded by the Research Foundation of the State University of New York, for and on behalf of Stony Brook University, the largest academic user of Laboratory facilities; and Battelle Memorial Institute, a nonprofit, applied science and technology organization. Visit Brookhaven Lab's electronic newsroom for links, news archives, graphics, and more at www.bnl.gov/newsroom, or follow Brookhaven Lab on Twitter at twitter.com/BrookhavenLab

For more information, please click here

Contacts:
(631)344-2347

Copyright © Brookhaven National Laboratory

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Nanostructures Increase Corrosion Resistance in Metallic Body Implants May 24th, 2015

Iranian Scientists Use Magnetic Field to Transfer Anticancer Drug to Tumor Tissue May 24th, 2015

Basel physicists develop efficient method of signal transmission from nanocomponents May 23rd, 2015

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Visualizing How Radiation Bombardment Boosts Superconductivity: Atomic-level flyovers show how impact sites of high-energy ions pin potentially disruptive vortices to keep high-current superconductivity flowing May 23rd, 2015

Chemistry

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Conversion of Greenhouse Gases to Syngas in Presence of Nanocatalysts in Iran May 22nd, 2015

Nanosorbent Produced in Iran to Adsorb Tiny Amounts of Aromatic Hydrocarbon from Seawater May 18th, 2015

Thin films

Sandia researchers first to measure thermoelectric behavior by 'Tinkertoy' materials May 20th, 2015

Defects can 'Hulk-up' materials: Berkeley lab study shows properly managed damage can boost material thermoelectric performances May 20th, 2015

Efficiency record for black silicon solar cells jumps to 22.1 percent: Aalto University's researchers improved their previous record by over 3 absolute percents in cooperation with Universitat Politècnica de Catalunya May 18th, 2015

Govt.-Legislation/Regulation/Funding/Policy

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Visualizing How Radiation Bombardment Boosts Superconductivity: Atomic-level flyovers show how impact sites of high-energy ions pin potentially disruptive vortices to keep high-current superconductivity flowing May 23rd, 2015

Nanotherapy effective in mice with multiple myeloma May 21st, 2015

Turn that defect upside down: Twin boundaries in lithium-ion batteries May 21st, 2015

Possible Futures

Simulations predict flat liquid May 21st, 2015

Nature inspires first artificial molecular pump: Simple design mimics pumping mechanism of life-sustaining proteins found in living cells May 19th, 2015

NNCO and Museum of Science Fiction to Collaborate on Nanotechnology and 3D Printing Panels at Awesome Con May 19th, 2015

Quantum 'gruyères' for spintronics of the future: Topological insulators become a little less 'elusive' May 12th, 2015

Announcements

Nanostructures Increase Corrosion Resistance in Metallic Body Implants May 24th, 2015

Iranian Scientists Use Magnetic Field to Transfer Anticancer Drug to Tumor Tissue May 24th, 2015

Basel physicists develop efficient method of signal transmission from nanocomponents May 23rd, 2015

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Patents/IP/Tech Transfer/Licensing

Researchers develop new way to manufacture nanofibers May 21st, 2015

Novel superconducting undulator provides first x-ray light at ANKA May 1st, 2015

Long Island Capital Alliance Announces Participants for Brookhaven National Laboratory Technology Transfer Capital Forum on May 8: Keynote Speaker Dr. Doon Gibbs, Director of Brookhaven National Laboratory April 16th, 2015

MIT sensor detects spoiled meat: Tiny device could be incorporated into 'smart packaging' to improve food safety April 15th, 2015

Automotive/Transportation

Wearables may get boost from boron-infused graphene: Rice U. researchers flex muscle of laser-written microsupercapacitors May 18th, 2015

ORNL demonstrates first large-scale graphene fabrication May 14th, 2015

Penn and UC Merced researchers match physical and virtual atomic friction experiments May 8th, 2015

Silicon Storage Technology and GLOBALFOUNDRIES Announce Qualification of Automotive Grade 55nm Embedded Flash Memory Technology May 5th, 2015

Fuel Cells

Unique microscopic images provide new insights into ionic liquids April 28th, 2015

Expanding the reach of metallic glass April 22nd, 2015

Newly-Developed Nanocatalysts Increase Performance of Fuel Cells April 16th, 2015

Cobalt film a clean-fuel find: Rice University discovery is efficient, robust at drawing hydrogen and oxygen from water April 15th, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project