Navigation Links
Air Force support for a new generation of lithium-ion batteries
Date:7/15/2013

A few months back, the Air Force Office of Scientific Research (AFOSR) was proud to publish an article regarding a research accomplishment by Dr. Jim Tour and his research team at Rice University. AFOSR, along with other funding agencies, supported Dr. Tour's research effort to make graphene suitable for a variety of organic chemistry applications -- especially the promise of advanced chemical sensors, nanoscale electronic circuits and metamaterials.

Four years ago, Tour's research team demonstrated that they could chemically unzip cylindrical shaped carbon nanotubes into soluble graphene nanoribbons (GNR) without compromising the electronic properties of the graphitic structure. A recent paper by the Tour team, published in IEEE Spectrum and partially funded by AFOSR, showed that GNR can significantly increase the storage capacity of lithium ion (Li-ion) by combining graphene nanoribbons with tin oxide.

By producing GNR in bulk, a necessary requirement for making this a viable process, the Tour team mixes GNR and 10 nanometer wide particles of tin oxide to create a slurry. By adding a cellulose gum binding agent and water, the mixture is then applied to a capacitor, which is then fitted to a button-style lithium-ion battery.

In the Tour lab tests, the prototype battery had an initial charge capacity of more than 1,520 milliamp hours per gram (mAh/g). After repeated charge-discharge cycles that number began to plateau at about 825 mAh/g, but after 50 discharge cycles, the batteries retained far more capacity -- more than double -- that of Li-ion batteries that employ standard graphite anodes.

The critical key that makes the increase in battery capacity possible is the significant improvement in flexibility that graphene nanoribbons lend to the anode. By comparison, conventional Li-ion batteries with graphite anodes break down and lose efficiency because of their inability to flex, as they expand and contract, with re
'/>"/>

Contact: Robert White
robert.white@afosr.af.mil
703-588-0665
Air Force Office of Scientific Research
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Bioforce Receives American Botanical Councils Tyler Award
2. Air Force Office of Scientific Research hosts nanotechnology pioneer
3. inVentiv Health Completes Acquisition of Kforce Clinical Research
4. Nation Must Invest in Biomedical Research/Health Workforce, AAHC President Tells Congress
5. Bode Technology Launches Same-Day DNA Service For Faster Response to Law Enforcement and Justice System
6. Calmar Laser Growth Reinforced by ISO 9001:2008 Certification
7. Boyd Coatings Awarded Workforce Training Grant
8. Avenida Suites Brazil Sponsors 4th Annual Global HR News Conference in Sao Paulo Focused on Global Mobility Workforce Issues
9. Sanofi Oncology and Colon Cancer Coalition Join Forces to Raise Awareness of Colorectal Cancer
10. Digital Science & SciBite Join Forces to Harness Big Data for Life Sciences
11. Oxford Performance Materials and Biomet Microfixation Join Forces
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/29/2014)... (PRWEB) August 29, 2014 Local veterinarian, ... Veterinary Hospital are seeking candidates to participate in an ... osteoarthritis. The ultimate goal of this study is ... cells into one or two arthritically affected joints can ... , Candidates for the current investigational study must ...
(Date:8/29/2014)... A major challenge before new biotechnology start-up ... of Boston-Cambridge, is gaining visibility that can lead to ... Director of Boston’s Adult Stem Cell Technology Center, LLC ... of his company an important priority since he started ... a social media marketing campaign launched earlier ...
(Date:8/28/2014)... 2014 Best Sanitizers, Inc., a leader ... processing industry, is asking industry professionals to prepare for ... the E2 soap they’re currently using to the Best ... Hand hygiene is critical to fighting cross-contamination and ... Six key criteria are identified to evaluate the effectiveness ...
(Date:8/28/2014)... research platform uses a laser to measure ... stress and heating, an approach likely to ... and batteries., This new technique, called nanomechanical ... and the surface stress of microscale structures ... the merits of surface-stress influence on mechanical ...
Breaking Biology Technology:Burnt Hills Veterinary Hospital Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 3The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 4Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2New analytical technology reveals 'nanomechanical' surface traits 2New analytical technology reveals 'nanomechanical' surface traits 3
... DIEGO, Sept. 13 Genomatica announced today ... the company full time as executive chairman and chief ... with leading chemical producers, users, feedstock suppliers, brands and ... and biotech leadership; $500 million in partnerships ...
... Convergent Procedure, a novel approach to treat atrial ... nContact Surgical, Inc. (nContact), was highlighted at the ... Association for Cardio-Thoracic Surgery) Annual Meeting in Geneva, ... 2010 Techno-College Programme to receive an update on ...
... Berkeley, have developed a pressure-sensitive electronic material from semiconductor ... the term "thin-skinned." "The idea is to ... which means incorporating the ability to feel and touch ... and computer sciences and head of the UC Berkeley ...
Cached Biology Technology:Bill Baum Joins Genomatica as it Ramps for Commercial Rollout 2Bill Baum Joins Genomatica as it Ramps for Commercial Rollout 3Bill Baum Joins Genomatica as it Ramps for Commercial Rollout 4The Convergent Procedure for the Treatment of Chronic Atrial Fibrillation Highlighted at EACTS Annual Meeting in Geneva 2Engineers make artificial skin out of nanowires 2Engineers make artificial skin out of nanowires 3
(Date:8/28/2014)... Munich have assigned a number of 435-million-year-old fossils ... animals lived in shallow marine habitats and were ... Jurassic strata. , Before they sank to ... were fossilized some 435 million years ago, these ... seas although they were not exactly inconspicuous, ...
(Date:8/27/2014)... mechanical force that a single fungal cell or bacterial colony ... it plays a heavy role in setting up some of ... may not be too much of a stretch to say ... ability to respond to the touch of beneficial fungi, according ... of agronomy at the University of Wisconsin-Madison. , "Many ...
(Date:8/27/2014)... mastodons, short-faced bears, giant ground sloths, saber-toothed cats and ... years ago at the end of the Pleistocene period. ... debated by scientists who, until recently, could only speculate ... UC Santa Barbara,s James Kennett, professor emeritus in the ... with Earth played a major role in the extinction. ...
Breaking Biology News(10 mins):Paleontology: Oldest representative of a weird arthropod group 2A touching story: The ancient conversation between plants, fungi and bacteria 2A touching story: The ancient conversation between plants, fungi and bacteria 3Nanodiamonds are forever 2Nanodiamonds are forever 3
... team of researchers based at the Institute of Vertebrate ... professor at Washington University in St. Louis, has discovered ... anthropologists perceptions of the emergence of modern humans in ... published Oct. 25 in the online early edition of ...
... case study published in the 2010 Journal of Natural ... State University studies the challenges one organization faced in maintaining ... American Society of Agronomy. Since 1995, Seattle Youth Garden ... in the juvenile justice system. SYGW offers teens and young ...
... up the heat might be the best thing for athletes ... human physiology researchers at the University of Oregon. Published ... Physiology , the paper examined the impact of heat acclimation ... Researchers conducted exercise tests on 12 highly trained cyclists ...
Cached Biology News:Growing crops in the city 2Heat acclimation benefits athletic performance 2
... Ribonuclease is a 27kDa periplasmic enzyme from ... RNA to cyclic nucleotide monophosphate (NMP) intermediates. ... these intermediates to 3-NMPs (1). RNase ONE ... RNases that can cleave a phosophodiester bond ...
Porcine Pulmonary Artery Endothelial Cells (PPAEC) (>500,000 cells)...
...
... features, the 1400 Series will maximize your comfort level ... every time you use it. , Energy ... by as much as 50% from competitive models, saving ... cabinet. Multiply this savings by the number of ...
Biology Products: