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:1/15/2014)... DTS Language Services, Inc . is pleased to announce ... organizations who need document translations. Clients will now have ... in advance with a selection of nearly 50 life science ... critical factor in clinical and scientific fields, and decrease the ...
(Date:1/14/2014)... Date: Friday, April 11, 2014 , Time: 6 ... Almshouse Road, Warrington, Pa. , Details: The Hepatitis ... finding a cure for hepatitis B and improving the quality ... Crystal Ball on Friday, April 11 at Warrington Country Club ...
(Date:1/14/2014)... EquitiesIQ, a leading informational research provider, has ... an emerging biomedical company acquiring, developing, manufacturing, and marketing ... Free report download: http://equitiesiq.com/reports/alliqua/ , In late ... and Board, which launched the company’s new strategy to ...
(Date:1/14/2014)... Mass. , Jan. 14, 2014  RXi Pharmaceuticals ... discovering, developing and commercializing innovative therapies addressing major ... that it received the Notice of Allowance from ... its unique self-delivering RNAi compounds (sd-rxRNA®), for the ...
Breaking Biology Technology:DTS Improves Efficiency for Life Science Document Translations 2Hepatitis B Foundation to Host Annual Crystal Ball Gala 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3
... 20 /Xinhua-PRNewswire/ -- Sinovac Biotech Ltd. (Amex:,SVA), ... China, notified,its shareholders today that the Annual ... 2007, has been postponed due the geographical,nature ... the mailing of,proxy materials. The Company is ...
... EDMONTON, Aug. 20 /PRNewswire-FirstCall/ - BioMS Medical ... of multiple sclerosis (MS), announced,today that it is ... bid,which will be conducted pursuant to the rules ... purchase up to 1,000,000 of its Class A ...
... ABUJA, August 20 The Chrome Group today announced ... of its companies on trading,platforms in Europe and the ... Group Chief Communications Officer, Mr. Val Oji said that ... Group was,implementing over the next two years. Chrome recently ...
Cached Biology Technology:Sinovac Announces Postponement of Annual General Meeting 2BioMS Medical announces its intention to renew a normal course issuer bid 2Chrome Group to Seek Listing for Some of its Subsidiaries 2Chrome Group to Seek Listing for Some of its Subsidiaries 3Chrome Group to Seek Listing for Some of its Subsidiaries 4
(Date:4/21/2014)... can help treat and prevent influenza and respiratory ... the lungs and breathing passages, according to research ... new Institute for Biomedical Sciences. , In a ... upcoming publication of the International Journal of Molecular ... ginseng, a well-known herbal medicine, on human health. ...
(Date:4/21/2014)... Like a daily pill to lower cholesterol can reduce ... reduces eye inflammation could help save the vision of ... already targeted with high doses of niacin to decrease ... also be an effective mark for these patients, said ... Georgia at Georgia Regents University. , Martin is ...
(Date:4/21/2014)... domesticated chili pepper now the world,s most ... team of researchers, led by a plant scientist ... from the four-pronged investigation based on linguistic ... traditional archaeological and genetic data suggest a ... the domesticated chili pepper. That region, extending from ...
Breaking Biology News(10 mins):Ginseng can treat and prevent influenza and RSV, researcher finds 2Scientists target receptor to treat diabetic retinopathy 2Scientists target receptor to treat diabetic retinopathy 3Birthplace of the domesticated chili pepper identified in Mexico 2
... Copenhagen, Herlev Hospital and Rigshospitalet have identified a clear link ... blood. In the long term, the research may well help ... been published in the Journal of the American College ... which the opening of the aortic valve is narrowed ...
... PULLMAN, Wash. A class of drugs used to treat ... treating cancers and immune-related diseases, a new WSU-led study has ... have a major impact on its ability to affect specific ... "This was rather unexpected, given how relatively simple the molecules ...
... iPhone users now have access to a free ... including electricity, natural gas, biodiesel, e85 Ethanol, propane ... Energy Laboratory (NREL) developed the new mobile application ... local stakeholders across the country in an effort ...
Cached Biology News:Danish researchers predict risk of valvular heart disease 2Researcher finds potential new use for old drugs 2NREL developed mobile app for alternative fueling station locations released 2
... Immunogen: Synthetic peptide derived from the C ... protein This peptide sequence is downstream ... Zymed polyclonal Connexin 36 antibody Cat. No. ... 36. Reactivity: Mouse (positive control: mouse ...
Invitrogen's Calcium Phosphate Transfection Kit provides high-quality reagents to enable the introduction of DNA into tissue culture cells via calcium phosphate co-precipitation....
...
...
Biology Products: