Navigation Links
Experiments reveal unexpected activity of fuel cell catalysts
Date:12/13/2007

UPTON, NY -- Researchers at the U.S. Department of Energys Brookhaven National Laboratory have unveiled important details about a class of catalysts that could help improve the performance of fuel cells. With the goal of producing clean hydrogen for fuel cell reactions in mind, the researchers determined why two next-generation catalysts including gold, cerium, titanium, and oxygen nanomaterials exhibit very high activity. Their results will be published online in the December 14, 2007, edition of the journal Science.

Fuel cells combine hydrogen and oxygen without combustion to produce direct electrical power and water. They are attractive as a source of power for transportation applications because of their high energy efficiency, the potential for using a variety of fuel sources, and their zero emissions. However, a major problem facing this technology is that the hydrogen-rich materials feeding the reaction often contain carbon monoxide (CO), which is formed during hydrogen production. Within a fuel cell, CO poisons the expensive platinum-based catalysts that convert hydrogen into electricity, deteriorating their efficiency over time and requiring their replacement.

Fuel cell reactions are very demanding processes that require very pure hydrogen, said Brookhaven chemist Jose Rodriguez. You need to find some way to eliminate the impurities, and thats where the water-gas shift reaction comes into play.

The water-gas shift (WGS) reaction combines CO with water to produce additional hydrogen gas and carbon dioxide. With the assistance of proper catalysts, this process can convert nearly 100 percent of the CO into carbon dioxide. Rodriguezs group, which includes researchers from Brookhavens chemistry department, the Center for Functional Nanomaterials (CFN), and the Central University of Venezuela, studied two next-generation WGS nanoscale catalysts: gold-cerium oxide and gold-titanium oxide.

These nanomaterials have recently
'/>"/>

Contact: Karen McNulty Walsh
kmcnulty@bnl.gov
631-344-8350
DOE/Brookhaven National Laboratory
Source:Eurekalert

Page: 1 2

Related biology technology :

1. New Survey Reveals Many Adults With High Cholesterol Fail to Take Necessary Steps to Improve Their Condition
2. Actelion Announces Multiple Presentations on Tracleer(R) and the REVEAL Registry at CHEST 2007
3. New Data Reveal Ethnicity May Play Role in Weight Loss Decisions
4. New paper reveals nanoscale details of photolithography process
5. Stem Cell Agency Finally Reveals Institutions Involved in Conflict Problem
6. Dendreon Announces Publication of Phase 1 Study Highlighting Immunologic and Clinical Activity of Lapuleucel-T (Neuvenge(R)) in Advanced Breast Cancer Patients
7. ANX-514 Reduces Hypersensitivity Reactions Without Impacting Pharmacokinetics or Antitumor Activity in Preclinical Tests
8. Celator(R) Pharmaceuticals Study Shows CPX-571 Maintains Synergistic Ratio of Irinotecan and Cisplatin to Improve Anti-tumor Activity
9. Brostallicin Trial Data Demonstrates Encouraging Anti-tumor Activity in Patients With Chemotherapy-Resistant Cancers
10. Using catalysts to stamp nanopatterns without ink
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... July 10, 2014   Ceres, Inc . (Nasdaq: ... company, announced today financial results for the three months ... its business. Ceres reported that the company ... performance this growing season in Brazil, which concluded in ... company,s sorghum evaluation areas for part of the growing ...
(Date:7/10/2014)... of Adelaide research may help in the fight against ... detect tiny quantities of explosives with the use of ... journal Sensors and Actuators B: Chemical , the ... detect explosives in concentrations as low as 6.3 ppm ... only a few minutes. , "Traditionally explosives detection has ...
(Date:7/10/2014)... A new study published today in the journal ... has found that time of day and sleep deprivation ... could be crucial when looking at the best time ... and heart disease, and for administering medicines effectively. , ... of Cancer Research, London, investigated the links between sleep ...
(Date:7/10/2014)... the fractional quantum Hall effect in bilayer graphene and ... tuned by an electric field. , The fractional ... to thin sheets are exposed to large magnetic fields, ... of individual electrons behave as a single system. However, ... established, many details of this collective behavior remain not ...
Breaking Biology Technology:Ceres Announces Fiscal Third Quarter 2014 Financial Results 2Ceres Announces Fiscal Third Quarter 2014 Financial Results 3Ceres Announces Fiscal Third Quarter 2014 Financial Results 4Ceres Announces Fiscal Third Quarter 2014 Financial Results 5Ceres Announces Fiscal Third Quarter 2014 Financial Results 6Ceres Announces Fiscal Third Quarter 2014 Financial Results 7Ceres Announces Fiscal Third Quarter 2014 Financial Results 8Ceres Announces Fiscal Third Quarter 2014 Financial Results 9Detecting trace amounts of explosives with light 2Time of day crucial to accurately test for diseases, new research finds 2Columbia researchers observe tunable quantum behavior in bilayer graphene 2Columbia researchers observe tunable quantum behavior in bilayer graphene 3
... Dimensions , a Wisconsin data management firm, announced last ... the New York metro area by partnering with MailSurity ... company that develops paper scanning and data recognition technology, ... its software to process forms. , ,Parascript's software is ...
... rude noise somebody makes in a meeting after too ... population also knows that Enterprise Resource Planning isnt some ... single check to a vendor. , ,Im not out ... is apparently less obvious is that ERP systems dont ...
... provider of rich-media systems and software, is deploying its ... announced. , ,Sonic Foundry and media services provider ... Connect's new Virtual Law Viewer system for the ... MediaSite presentation recorders with the BxVideo RMXPRES hosting services, ...
Cached Biology Technology:Steering a project portfolio takes more than expensive software 2Steering a project portfolio takes more than expensive software 3Streaming video could make courtrooms into Internet conference calls 2
(Date:7/11/2014)... Salk Institute for Biological Studies, BGI, and other ... and reliability of the existing targeted gene correction ... which could significantly increased gene-correction efficiency in human ... online in Cell Stell Cell provides ... therapy. , The combination of stem cells and ...
(Date:7/11/2014)... July 11, 2014 Researchers have pioneered ... images. The new technology, called Virtual Finger, allows ... structures like neurons and synapses using the flat ... technology makes 3D imaging studies orders of magnitude ... an unprecedented level across many areas of experimental ...
(Date:7/11/2014)... the normal circumstances, astrocytes participate in normal ... and exhibit therapeutic and repairing effects on ... have found that nerve cells differentiated from ... reduced viability, which produces influences on subsequent ... General Hospital, Hebei United University, China demonstrated ...
Breaking Biology News(10 mins):A new genome editing method brings the possibility of gene therapies closer to reality 2Virtual finger enables scientists to navigate and analyze complex 3D images 2
... COLUMBUS, Ohio From the paleolithic diet to the raw ... they believe our ancient ancestors ate. But some of these ... new book on the evolution of the use of food and ... can learn from what our ancestors ate, many of our more ...
... E. coli food poisoning outbreaks developed more ... trials because of lack of commercial interest. University of ... neutralises the toxin produced by E. coli , which ... The team of scientists Dr Adrienne Paton, Associate Professor ...
... to phase out nuclear power by 2022 has reopened an ... Japan, which is still coming to terms with events at ... the SETAC journal Environmental Toxicology and Chemistry adds ... using research from the Chernobyl disaster. The issue ...
Cached Biology News:An 'all natural' diet? There's no such thing 2An 'all natural' diet? There's no such thing 3Potential treatment for deadly E. coli disease 2
... and G. Butcher (1998). • The major ... research in the immunology area. There is ... proteins and in their function as antigen-presenting ... with the prospect of tackling biochemical and ...
VACUGENE PUMP 110V, 1 EA. Category: Nucleid Acid Detection Systems....
Rat whole blood (Sprague-Dawley, averaging 7-8 weeks of age, either sex) is collected at the time of slaughter and refrigerated within 6 hours, and processed and frozen within 24 hours. The serum is ...
... mutS and ES1301 mutS are mismatch repair ... these strains prevents repair of the newly ... mutation efficiencies and making them helpful in ... Sites II Mutagenesis Systems. Both ES1301 and ...
Biology Products: