Navigation Links
Brown chemists report promising advance in fuel-cell technology
Date:5/24/2010

PROVIDENCE, R.I. [Brown University] Creating catalysts that can operate efficiently and last a long time is a big barrier to taking fuel-cell technology from the lab bench to the assembly line. The precious metal platinum has been the choice for many researchers, but platinum has two major downsides: It is expensive, and it breaks down over time in fuel-cell reactions.

In a new study, chemists at Brown University report a promising advance. They have created a unique core and shell nanoparticle that uses far less platinum yet performs more efficiently and lasts longer than commercially available pure-platinum catalysts at the cathode end of fuel-cell reactions.

The chemistry known as oxygen reduction reaction takes place at the fuel cell's cathode, creating water as its only waste, rather than the global-warming carbon dioxide produced by internal combustion systems. The cathode is also where up to 40 percent of a fuel cell's efficiency is lost, so "this is a crucial step in making fuel cells a more competitive technology with internal combustion engines and batteries," said Shouheng Sun, professor of chemistry at Brown and co-author of the paper in the Journal of the American Chemical Society.

The research team, which includes Brown graduate student and co-author Vismadeb Mazumder and researchers from Oak Ridge National Laboratory in Tennessee, created a five-nanometer palladium (Pd) core and encircled it with a shell consisting of iron and platinum (FePt). The trick, Mazumder said, was in molding a shell that would retain its shape and require the smallest amount of platinum to pull off an efficient reaction. The team created the iron-platinum shell by decomposing iron pentacarbonyl [Fe(CO)5] and reducing platinum acetylacetonate [Pt(acac)2], a technique Sun first reported in a 2000 Science paper. The result was a shell that uses only 30 percent platinum, although the researchers say they expect they will be able to make
'/>"/>

Contact: Richard Lewis
Richard_Lewis@brown.edu
401-863-3766
Brown University
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Leslie J. Browne Resigns as President and Chief Executive Officer of Pharmacopeia, Inc.
2. Dr. Elizabeth Brown Joins Argenta TEC
3. SURGEX(TM) Becomes the Official Sports Nutrition Drink of Former NBA Player Dee Brown and his Edge Basketball Training Facility
4. Board Certified Dermatologist and President-Elect of the Dermatologic Society of Greater New York, Dr. Lance H. Brown Takes His Comprehensive Practice to East Hampton, NY
5. [video] David Brown, President and CEO of LifeVantage Corporation, Discusses Record Page Views on WallSt.nets 3-Minute Press Show
6. NSTI Announces the 12th Annual Nanotech Conference & Expo 2009 May 3-7, at the George R. Brown Convention Center in Houston, Texas
7. Jennifer Brownstein, of CONNEXION Healthcare, Honored as Rising Star by Healthcare Businesswomens Association
8. Brown chemists create more efficient palladium fuel cell catalysts
9. TechConnect World Announces The CancerNano 2009 Symposium May 3-7, at the George R. Brown Convention Center in Houston
10. TechConnect World Conference Showcases Houston Leaders May 3-7, at the George R. Brown Convention Center
11. Marriott Resort Magically Turns Brown Grease "Green" With The Cost-Cutting Hydrologix GRS
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Brown chemists report promising advance in fuel-cell technology
(Date:4/30/2015)... April 30, 2015   Tamir Biotechnology , a ... update on its Ebola antiviral therapy program. ... TMR004, is currently being evaluated and considered by a ... against Ebola. During the first quarter of 2015, the ... To Accelerate The Evaluation of Potential Treatments and Vaccines ...
(Date:4/30/2015)... (PRWEB) April 30, 2015 Nitto ... today announces its increased capacity and production capability ... increased client variety and service fulfillment continues to ... improve process throughput capacities. , ... newly installed downstream process equipment at its Milford, ...
(Date:4/30/2015)... & Budapest, Hungary (PRWEB) April 30, 2015 ... web-based electronic lab notebook with integrated protocols and ... providing chemistry software solutions and consulting services for ... to the development of Labguru’s newest feature: chemical ... of deep domain features for biologists, bio-chemists, and ...
(Date:4/30/2015)... , April 30, 2015  Asterias Biotherapeutics, Inc. ... emerging field of regenerative medicine, today announced that it ... Thursday, May 7, 2015 after the close of the ... call and webcast on Thursday, May 7, 2015 at ... the results and recent corporate developments. For ...
Breaking Biology Technology:Tamir Biotechnology Provides Update on TMR004 Development Against Mutating Ebola 2Tamir Biotechnology Provides Update on TMR004 Development Against Mutating Ebola 3Tamir Biotechnology Provides Update on TMR004 Development Against Mutating Ebola 4Biotechnology Manufacturer Nitto Avecia Expands Capacity to Meet Client Demand 2Labguru Integrates ChemAxon's Marvin JS, to Enhance Functionality for Chemists 2Asterias Biotherapeutics to Report First Quarter Results on May 7, 2015 2Asterias Biotherapeutics to Report First Quarter Results on May 7, 2015 3
... a new type of experimental antibiotic can kill ... [1]. The findings could ultimately help scientists to ... for many hospital and community-acquired infections. Using ... of researchers from GlaxoSmithKline (GSK) captured a snapshot ...
... 4 Forte, LLC, today announced the ... database and estate recovery application that significantly improves ... provides access to a proprietary database of more ... algorithms that accurately match deceased accounts to estate ...
... Fla. , Aug. 4 Dyadic International, Inc. (Pink Sheets: ... the Southern District of Florida has approved the final resolution of the ... and dismissed the lawsuit with prejudice. , , ... (Logo: http://photos.prnewswire.com/prnh/20091214/DYADICLOGO ) , , ...
Cached Biology Technology:Image of new antibiotic in action opens up new opportunities to combat antibacterial resistance 2Forte Launches Probate Finder OnDemand™ 2Forte Launches Probate Finder OnDemand™ 3Dyadic International Announces Final Resolution and Dismissal of Stockholder Class Action Lawsuit 2
(Date:4/2/2015)... , April 2, 2015 ... touch fingerprint sensor FPC1025 from the distributor World Peace ... commence during Q2 2015 although the major part of ... sensors will be used by smartphone manufacturers in ... MSEK is included in the communicated revenue guidance of ...
(Date:3/31/2015)... March 31, 2015   Guidepoint , a leading ... the Post-Surgical Pain Management TRACKER, part of the ... trends in the medical device and therapeutics markets. The ... including treatment volumes, market share, and adoption rates across ... with joint surgery. The Post-Surgical Pain Management ...
(Date:3/24/2015)... Research and Markets ( http://www.researchandmarkets.com/research/kvdtcw/face_and_voice ) has announced ... Strategic Business Report" report to their offering. This ... US$ Thousands by the following Segments: Face Biometrics, and Voice Biometrics. ... Canada , Japan , Europe ... & Africa , and ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 110 Million 2Guidepoint Launches Post-Surgical Pain Management TRACKER 2Guidepoint Launches Post-Surgical Pain Management TRACKER 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6
... head impact injury are an interesting scientific question. Professor ... for Biomechanics and Mechanobiology of the Ministry of Education, ... and the School of Materials Science and Engineering, Wuhan ... After 3 years of innovative research, they are making ...
... to achieve goals set by the federal government for reducing ... need to eliminate an average of 64 excess calories per ... American Journal of Preventive Medicine . This reduction could ... both. Without this reduction, the authors predict that the average ...
... Ill. -- Researchers have determined that bacteria are present ... the common belief that normal urine is sterile. These ... Journal of Clinical Microbiology by researchers at ... "Doctors have been trained to believe that urine is ...
Cached Biology News:Mechanical properties and microstructure of cranial and beak bones of the woodpecker and the lark 2How many calories does it take to reach childhood obesity prevention goals? 2How many calories does it take to reach childhood obesity prevention goals? 3Loyola study debunks common myth that urine is sterile 2
Allophycocyanin (APC) anti-human CD193 (CCR3, CKR3) 25 tests...
Mouse monoclonal [YLI-90] to Ly49I (Biotin) ( Abpromise for all tested applications)....
Goat polyclonal to PPP2R5D Immunogen: Peptide with sequence KRAEEFLTASQEAL, from C Terminus of the protein sequence according to NP_006236...
Rabbit polyclonal to KIAA1276 ( Abpromise for all tested applications). entrezGeneID: 27146 SwissProtID: Q9ULE4...
Biology Products: