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

Multi-walled carbon nanotubes riddled with defects and impurities on the outside could replace some of the expensive platinum catalysts used in fuel cells and metal-air batteries, according to scientists at Stanford University. Their findings are published in the May 27 online edition of the journal Nature Nanotechnology.

"Platinum is very expensive and thus impractical for large-scale commercialization," said Hongjie Dai, a professor of chemistry at Stanford and co-author of the study. "Developing a low-cost alternative has been a major research goal for several decades."

Over the past five years, the price of platinum has ranged from just below $800 to more than $2,200 an ounce. Among the most promising, low-cost alternatives to platinum is the carbon nanotube a rolled-up sheet of pure carbon, called graphene, that's one-atom thick and more than 10,000 times narrower a human hair. Carbon nanotubes and graphene are excellent conductors of electricity and relatively inexpensive to produce.

For the study, the Stanford team used multi-walled carbon nanotubes consisting of two or three concentric tubes nested together. The scientists showed that shredding the outer wall, while leaving the inner walls intact, enhances catalytic activity in nanotubes, yet does not interfere with their ability to conduct electricity.

"A typical carbon nanotube has few defects," said Yanguang Li, a postdoctoral fellow at Stanford and lead author of the study. "But defects are actually important to promote the formation of catalytic sites and to render the nanotube very active for catalytic reactions."

Unzipped

For the study, Li and his co-workers treated multi-walled nanotubes in a chemical solution. Microscopic analysis revealed that the treatment caused the outer nanotube to partially unzip and form nanosized graphene pieces that clung to the inner nanotube, which remained mostly intact.

"We found that
'/>"/>

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)... January 15, 2014 This webinar ... on nonclinical and clinical safety assessment in biosimilars. ... guide a path for biosimilar drug development, however ... of biosimilarity with regards to quality, safety and ... of biosimilar drug development and registration, development strategies ...
(Date:1/15/2014)... NC (PRWEB) January 15, 2014 ... an enhancement to its Online Web Portal for Life ... now have the ability to specify the subject matter ... nearly 50 life science sub-domains. This will help reduce ... and scientific fields, and decrease the likelihood of error. ...
(Date:1/14/2014)... Doylestown, PA (PRWEB) January 14, 2014 ... – 11 p.m. , Location: Warrington Country Club, 1360 ... Hepatitis B Foundation, the only national nonprofit organization solely ... improving the quality of life for those affected worldwide, ... 11 at Warrington Country Club in Warrington, Pa. ...
(Date:1/14/2014)... York, NY (PRWEB) January 14, 2014 ... initiated coverage of Alliqua, Inc. (OTCQB: ALQA). Alliqua ... and marketing proprietary products to serve the wound ... , In late 2012, Alliqua was restructured ... launched the company’s new strategy to become a ...
Breaking Biology Technology:Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2DTS 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. 3
... 3, 2011 EMG Laboratory ... awarded the American Association of Neuromuscular & Electrodiagnostic Medicine,s ... Exemplary Status. EMG Laboratory has provided advanced testing ... around Merrimack Valley and Cape Cod since 1997. Currently, ...
... 2011 Omeros Corporation (NASDAQ: OMER ), ... products focused on inflammation, bleeding and disorders of the ... M.D., chairman and chief executive officer, is scheduled to ... 2011 Canaccord Genuity Growth Conference August 10, 2011 ...
... Inc. (NYSE Amex: CUR ) announced it ... develop its human neural stem cell technology for the ... "Research to Treat Cancerous Brain Tumors with Neural Stem ... Investigator John Zhang, MD, PhD, Professor of Neurosurgery, Loma ...
Cached Biology Technology:EMG Laboratory Attains Prestigious National Accreditation for Clinical Excellence in Neuromuscular Diagnosis 2EMG Laboratory Attains Prestigious National Accreditation for Clinical Excellence in Neuromuscular Diagnosis 3Neuralstem Awarded Department of Defense Contract for Brain Cancer Research 2Neuralstem Awarded Department of Defense Contract for Brain Cancer Research 3
(Date:4/15/2014)... partially funded by the U.S. Department of Agriculture and ... their diets simply by enjoying white or brown rice ... , In a study published online in the peer-reviewed ... Theresa Nicklas, DrPH, of Baylor College of Medicine, analyzed ... 2005-2010 and evaluated the association of rice consumption with ...
(Date:4/14/2014)... you,re over 24 years of age you,ve already reached ... according to a new Simon Fraser University study. ... professor Mark Blair, Thompson,s thesis supervisor, and Andrew Henrey, ... news in a just-published PLOS ONE Journal ... science experiments to rest on big data, the trio ...
(Date:4/14/2014)... levels of the greenhouse gas methane were found above ... to be an important emissions source, according to a ... findings could have implications for the evaluation of the ... which is one of only a few to use ... levels in the air above wells, identified seven individual ...
Breaking Biology News(10 mins):Eating rice boosts diet quality, reduces body weight and improves markers for health 2Eating rice boosts diet quality, reduces body weight and improves markers for health 3Study says we're over the hill at 24 2'Problem wells' source of greenhouse gas at unexpected stage of natural gas production 2
... of cholera appear to have evolved a distinctly different mechanism ... the current issue of the online journal mBio . ... the diarrheal disease cholera. While there are more than ... have been known to cause epidemic and pandemic outbreaks of ...
... 2010) -- When their razor-sharp mandibles wear out, leaf-cutter ... efficient sisters take over cutting, say researchers from two ... of regular publication in the journal Behavioral Ecology ... way of providing for its displaced workers. ...
... endogenous estrogen (i.e., estrogen produced by ovaries and by ... replacement therapy (HRT) utilizing estrogen alone (the exogenous estrogen) ... according to study results presented at the 33rd Annual ... "Our analysis suggests that, contrary to previous ...
Cached Biology News:When their tools get dull, leaf-cutters switch jobs 2When their tools get dull, leaf-cutters switch jobs 3Estrogen alone is effective for reducing breast cancer risk 2
... purification systems provide high speed purification of ... offer increased throughput and reproducible results. The ... mL and KingFisher 96, covering sample volumes ... consists of an instrument, specially designed plastics ...
... The DNA120OP is specifically engineered for efficient ... design incorporates a glass cover and a ... automated, unattended, odor-free processing of samples in ... for Synthetic Oligos ...
... basic SpeedVac concentrator designed for the price-conscious ... still features a standard Teflon coated chamber ... and heat. It is designed for use ... variety of different rotors for maximum sample ...
... SpeedVac to have active, real-time sample temperature ... is the worlds first, fully modular SpeedVac ... stacked together to form an integrated unit ... is also the first SpeedVac to have ...
Biology Products: