Navigation Links
'Unzipped' carbon nanotubes could help energize fuel cells and batteries, Stanford scientists say
Date:5/27/2012

adding a few iron and nitrogen impurities made the outer wall very active for catalytic reactions," Dai said. "But the inside maintained its integrity, providing a path for electrons to move around. You want the outside to be very active, but you still want to have good electrical conductivity. If you used a single-wall carbon nanotube you wouldn't have this advantage, because the damage on the wall would degrade the electrical property."

In fuel cells and metal-air batteries, platinum catalysts play a crucial role in speeding up the chemical reactions that convert hydrogen and oxygen to water. But the partially unzipped, multi-walled nanotubes might work just as well, Li added. "We found that the catalytic activity of the nanotubes is very close to platinum," he said. "This high activity and the stability of the design make them promising candidates for fuel cells."

The researchers recently sent samples of the experimental nanotube catalysts to fuel cell experts for testing. "Our goal is to produce a fuel cell with very high energy density that can last very long," Li said.

Multi-walled nanotubes could also have applications in metal-air batteries made of lithium or zinc.

"Lithium-air batteries are exciting because of their ultra-high theoretical energy density, which is more than 10 times higher than today's best lithium ion technology," Dai said. "But one of the stumbling blocks to development has been the lack of a high-performance, low-cost catalyst. Carbon nanotubes could be an excellent alternative to the platinum, palladium and other precious-metal catalysts now in use."

Controversial sites

The Stanford study might also have resolved a long-standing scientific controversy about the chemical structure of catalytic active sites where oxygen reactions occur. "One group of scientists believes that iron impurities are bonded to nitrogen at the active site," Li said. "Another group believes that iron
'/>"/>

Contact: Mark Shwartz
mshwartz@stanford.edu
650-723-9296
Stanford University
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Sensing the infrared: Researchers improve IR detectors with single-walled carbon nanotubes
2. From lemons to lemonade: Using carbon dioxide to make carbon nitride
3. Carbon capture and storage -- new research from UKERC shows tough road ahead to realize potential
4. Carbon nanotubes can double growth of cell cultures important in industry
5. Silicon-carbon electrodes snap, swell, dont pop
6. UCLA researchers demonstrate fully printed carbon nanotube transistor circuits for displays
7. Carbon nanotube forest camouflages 3-D objects
8. New biosensor benefits from melding of carbon nanotubes, DNA
9. Carbon nanotube muscles generate giant twist for novel motors
10. Boston College Researchers discover 2 early stages of carbon nanotube growth
11. Researchers use carbon nanotubes to make solar cells affordable, flexible
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Unzipped' carbon nanotubes could help energize fuel cells and batteries, Stanford scientists say
(Date:7/29/2014)... The first product launch from start-up ... to robotics. What sets Droidles completely apart from other ... allows them to communicate, share code with each other ... , “The invention is the system,” said Hurley Research ... life of their own, both physically and on the ...
(Date:7/29/2014)... (PRWEB) July 29, 2014 The prestigious ... of Congress was recently awarded to Juliana Hillis and ... MA, for their project, “From an Egg, Everything: America’s ... 3,000 final entries for the National History Day program ... 300 historians and educators in Washington, D.C. , The ...
(Date:7/29/2014)... July 29, 2014 White papers ... and cloud based eClinical technologies, have been published by ... These follow a long line of white papers by ... including Life Science Leader, Pharmaceutical Online, and OpenHealthNews. , ... a paper by CTO Marc Desgrousilliers, 'The Five ...
(Date:7/29/2014)... July 29, 2014 ... (LBS) zur Erfassung biologischer Daten in Verbindung ... und patentiert. Das LBS nimmt gleichzeitig mehrere ... des Patienten und sucht erhöhte biologische Aktivitäten ... Potenzial, die Entdeckung und Entwicklung neuer Medikamente ...
Breaking Biology Technology:Droidles, the Social Network of Robots and Open Source Platform for the Internet of Things, Launches for Crowd Funding on IndieGoGo.com 2In Vitro Fertilization (IVF) was the Subject of This Year’s Winning Entry for the Prestigious Library of Congress “Discovery or Exploration in History Award” 2In Vitro Fertilization (IVF) was the Subject of This Year’s Winning Entry for the Prestigious Library of Congress “Discovery or Exploration in History Award” 3Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 2Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 3PlaqueTec sichert sich CE-Kennzeichnung für Liquid Biopsy System - bahnbrechende Innovation zur Erfassung neuer biologischer Informationen aus erkranktem Herzkranzgefäß 2PlaqueTec sichert sich CE-Kennzeichnung für Liquid Biopsy System - bahnbrechende Innovation zur Erfassung neuer biologischer Informationen aus erkranktem Herzkranzgefäß 3PlaqueTec sichert sich CE-Kennzeichnung für Liquid Biopsy System - bahnbrechende Innovation zur Erfassung neuer biologischer Informationen aus erkranktem Herzkranzgefäß 4
... only Web-based solution for managing compliance and regulated content throughout ... , SAN DIEGO, June 22 Drug ... Virtify, Inc. , the market leader in enterprise ... upcoming release of its Virtx integrated software suite, an end-to-end, ...
... alternative to Singulair and Zicam - The ALCAT Test , ... FDA knocked the wind out of asthmatics by requesting the ... drug, to upgrade their warning against psychotic side effects. Further ... also last week announced warnings that the drug may cause ...
... , , SINGAPORE, June 22 Globally, the largest ... achieve a reduction in CO2 emissions by 8.0 percent between 2008 ... 5.75 percent bio-fuels of all transportation fuel by December 2010 and ... market, it is witnessing rapid growth in terms of both new ...
Cached Biology Technology:Virtify, Inc. Delivers Industry's First Enterprise Content Compliance Software Suite for Life Sciences Companies 2Virtify, Inc. Delivers Industry's First Enterprise Content Compliance Software Suite for Life Sciences Companies 3Virtify, Inc. Delivers Industry's First Enterprise Content Compliance Software Suite for Life Sciences Companies 4Virtify, Inc. Delivers Industry's First Enterprise Content Compliance Software Suite for Life Sciences Companies 5Knocking the Wind Out of Asthmatics: Help from Hippocrates 2Government Mandates Create Guaranteed Market for Bio-Fuel, Says Frost & Sullivan 2Government Mandates Create Guaranteed Market for Bio-Fuel, Says Frost & Sullivan 3Government Mandates Create Guaranteed Market for Bio-Fuel, Says Frost & Sullivan 4
(Date:7/28/2014)... of Medicine have pinpointed a mechanism in part of the ... blood, linking it to both type 1 and type 2 ... of Proceedings of the National Academies of Sciences . ... located in a part of the hypothalamus known as the ... that control glucose levels in the blood," said lead author ...
(Date:7/28/2014)... the top 10 U.S. cities that have seen an ... as frequent road closures, overwhelmed storm drains and compromised ... NOAA technical report. , This nuisance flooding, caused by ... coasts, between 300 and 925 percent since the 1960s. ... Frequency Changes around the United States, also finds Annapolis ...
(Date:7/28/2014)... has identified areas of the Earth that are high ... , Europe is particularly vulnerable, as it has the ... cent, of any continent in ,refugia, areas of ... conditions remain relatively constant during times of great environmental ... mostly in Scandinavia and Scotland. , The biggest ...
Breaking Biology News(10 mins):Glucose 'control switch' in the brain key to both types of diabetes 2NOAA: 'Nuisance flooding' an increasing problem as coastal sea levels rise 2NOAA: 'Nuisance flooding' an increasing problem as coastal sea levels rise 3Study finds Europe's habitat and wildlife is vulnerable to climate change 2
... TORONTO, ON A team of University of Toronto chemists ... quantum biology, observing quantum mechanics at work in photosynthesis in ... speculation that nature may be using quantum mechanical practices," says ... published this week in Nature . "Our latest ...
... that glaciers in the Himalayan mountains are thinning is ... examine and quantify the causes. Lawrence Berkeley National Laboratory ... of the most commonly blamed culpritgreenhouse gases, such as ... be causing the melting. Menon and her collaborators found ...
... For Immediate Release A team of scientists at ... on novel binding sites for an enzyme used by the ... discovery lays the foundation for the development of a new ... strains of the disease, and slow the evolution of drug ...
Cached Biology News:Scientists find quantum mechanics at work in photosynthesis 2Black carbon a significant factor in melting of Himalayan glaciers 2Black carbon a significant factor in melting of Himalayan glaciers 3Scripps Research scientists find two compounds that lay the foundation for a new class of AIDS drug 2Scripps Research scientists find two compounds that lay the foundation for a new class of AIDS drug 3Scripps Research scientists find two compounds that lay the foundation for a new class of AIDS drug 4Scripps Research scientists find two compounds that lay the foundation for a new class of AIDS drug 5
Sheep polyclonal to Streptomycin ( Abpromise for all tested applications). Antigen: Chemical / Small Molecule: Streptomycin conjugated to BSA....
Rabbit polyclonal to MAL ( Abpromise for all tested applications). entrezGeneID: 4118 SwissProtID: P21145...
Glutamate Receptor 5/1a...
Mouse monoclonal [3G8] to MDMA ( Abpromise for all tested applications)....
Biology Products: