Navigation Links
Engineer making rechargeable batteries with layered nanomaterials
Date:1/16/2013

lms to create the negative electrode of a lithium-ion cell and then studied the charge and discharge characteristics of this rechargeable battery. They found the graphene films grown on copper did not cycle the lithium ions and the battery capacity was negligible. But graphene grown on nickel showed improved performance because it was able to store and release lithium ions more efficiently.

"We believe that this behavior occurs because sheets of graphene on nickel are relatively thick near the grain boundaries and stacked in a well-defined manner -- called Bernal Stacking -- which provides multiple sites for easy uptake and release of lithium ions as the battery is discharged and charged," Singh said.

In a second research project, the researchers created tungsten disulfide nanosheets that were approximately 10 layers thick. Starting with bulk tungsten disulfide powder -- which is a type of dry lubricant used in the automotive industry -- the team was able to separate atomic layer thick sheets of tungsten disulfide in a strong acid solution. This simple method made it possible to produce sheets in large quantities. Much like graphene, tungsten disulfide also has a layered atomic structure, but the individual layers are three atoms thick.

The researchers found that these acid-treated tungsten disulfide sheets could also store and release lithium ions but in a different way. The lithium is stored through a conversion reaction in which tungsten disulfide dissociates to form tungsten and lithium sulfide as the cell is discharged. Unlike graphene, this reaction involves the transfer of at least two electrons per tungsten atom. This is important because researchers have long disregarded such compounds as battery anodes because of the difficulty associated with adding lithium to these materials, Singh said. It is only recently that the conversion reaction-based battery anodes have gained popularity.

"We also realize that tungsten disulfid
'/>"/>

Contact: Gurpreet Singh
gurpreet@k-state.edu
785-532-7085
Kansas State University
Source:Eurekalert

Page: 1 2 3 4

Related biology technology :

1. Stanford engineers use nanophotonics to reshape on-chip computer data transmission
2. Arizona State University engineers aim to improve performance of technology in extreme environments
3. Superior Controls of Seabrook, NH Named System Integrator of the Year for 2012 by Control Engineering Magazine
4. U.S. Tissue Engineering Markets
5. Stanford engineers weld nanowires with light
6. Microbes may be engineered to help trap excess CO2 underground
7. Smart, self-healing hydrogels open far-reaching possibilities in medicine, engineering
8. Engineer Robert J. Wood to receive NSFs Alan T. Waterman Award
9. Straintronics: Engineers create piezoelectric graphene
10. Global Genetic Engineering Industry
11. X-BODY BioSciences to Present Novel Methods of Selecting for Antibodies Against Targets on Live Cells at CHIs Protein Engineering Summit
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/2/2015)... -- Research and Markets ( ... PharmaBiotech,s new report "Biomarkers - Technologies, Markets ... This report follows the broad definition of a ... measured and evaluated as an indicator of normal ... responses to a therapeutic intervention. Tests based on ...
(Date:9/2/2015)... 2, 2015 Biovista Inc. is ... the 2015 BeHEARD science challenge, a global competition hosted ... researchers, access to the latest life science innovations and ... and pathway analytics capability to support Steven Laffoon ... the study of Niemann-Pick Disease Type A (NPA), a ...
(Date:9/2/2015)... Sept. 2, 2015 Australian prostate cancer technology ... Australian science prize recognising ,outstanding, science that uses its ... globally launch a novel prostate cancer diagnostic test known ... level consortium taking out the peer-reviewed Australian Museum Eureka ... This prize is awarded for ground ...
(Date:9/2/2015)... TEL-AVIV, Israel , September 2, 2015 /PRNewswire/ ... BLGTY, TASE: BOLT) ("BioLight" or the "Company"), a ... innovations in ophthalmology and cancer diagnostics, announced today ... treatment of glaucoma will be delivered at the ... of the European Society of Cataract & Refractive ...
Breaking Biology Technology:Updated 2015 Biomarkers Report - Latest Technologies, Markets and Companies Insights to 2024 with over 1,000 References 2Updated 2015 Biomarkers Report - Latest Technologies, Markets and Companies Insights to 2024 with over 1,000 References 3Biovista Sponsors Wylder Nation Foundation's Research on Acid Sphingomyelinase Deficiency 2Prostate Cancer Company Minomic Wins Prestigious Eureka Science Prize 2Prostate Cancer Company Minomic Wins Prestigious Eureka Science Prize 3Presentations to Highlight BioLight's IOPtiMate[TM] System at Upcoming European Ophthalmology Conferences 2Presentations to Highlight BioLight's IOPtiMate[TM] System at Upcoming European Ophthalmology Conferences 3
... ROCKVILLE, Md., Nov. 26 Human Genome,Sciences, Inc. (Nasdaq: ... the,Piper Jaffray 19th Annual Health Care Conference will be ... (Logo: http://www.newscom.com/cgi-bin/prnh/20010612/HGSLOGO ), A member of ... of the company on Wednesday, November 28, 2007 at ...
... Genta,Incorporated (Nasdaq: GNTA ) announced today ... Raymond P. Warrell, Jr., will provide a,company overview ... Capital,Markets 4th Annual Healthcare Conference. Genta,s presentation is ... at the New York Palace Hotel,New York, NY., ...
... Orthopedic Surgeons and Rheumatologists Performing More Procedures, ... US,Hyaluronic Acid (HA) Viscosupplementation Marketrack(TM) service, which,captures data ... groups provided more HA knee injections in Q3 ... in both groups, there are substantial,differences in the ...
Cached Biology Technology:Genta Incorporated to Present at Lazard Capital Markets 4th Annual Healthcare Conference 2Genta Incorporated to Present at Lazard Capital Markets 4th Annual Healthcare Conference 3Hyaluronic Acid Knee Procedures Grow 38% from Q3 2006 to Q3 2007 2
(Date:9/2/2015)... California , September 2, 2015 ... the security purpose implied in a system which ... geometry, voice, signature, iris, vein, DNA and finger ... has forced to develop such system which provides ... username, password, PIN, Patterns and tokens are vulnerable ...
(Date:8/26/2015)... August 26, 2015 The report "Multi-Factor ... Five Factor), Application (Travel & Immigration, Government, Banking, Defense, ... Forecast to 2020", published by MarketsandMarkets, Multi-Factor Authentication Market ... growing at a CAGR of 17.7% between 2015 and ... F igures spread through 169 P ...
(Date:8/20/2015)... 2015   Sensory, Inc ., a Silicon ... experience and security of consumer electronics through state-of-the-art ... its TrulySecure™ is the first multimodal ... FIDO Certified™. The FIDO (Fast Identification ... FIDO UAF (Universal Authentication Framework) 1.0 specifications, which ...
Breaking Biology News(10 mins):Biometrics Technology Market is Expected to Reach $13.8 Billion by 2015: Hexa Research Inc. 2Biometrics Technology Market is Expected to Reach $13.8 Billion by 2015: Hexa Research Inc. 3Biometrics Technology Market is Expected to Reach $13.8 Billion by 2015: Hexa Research Inc. 4Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 2Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 3Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 4Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 5TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 2TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 3TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 4TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 5
... This news release is available in French . ... the Canadian Food Inspection Agency (CFIA), and Alberta Innovates Bio Solutions ... protect consumers from Listeriosis, a serious foodborne illness caused by ... of the University of Alberta, will sequence and map the genomes ...
... a new method for visualizing material defects in thin-film ... Bert Nickel has, for the first time, succeeded in ... cells using laser light for localized excitation of the ... " Advanced Materials ". "We have developed a method ...
... Now, researchers at Yonsei University in Seoul, Republic of ... a layer of silver ions that can prevent growth ... Salmonella typhimurium and Campylobacter jejuni . The ... be particularly useful for applications in disaster recovery and ...
Cached Biology News:New genomics research project to eliminate Listeria from food supply 2Organic electronics: Imaging defects in solar cells 2Spinning up antibacterial silver on glass 2
Recombinant Ovine (Sheep) Growth Hormone, Ultra Pure...
albumin from bovine serum (BSA), 2,4-dinitrophenylated (DNP-BSA)...
... product contains 5 ml Dynabeads® ... the monoclonal BerEP4 against the ... cell adhesion molecule). Also available ... 2 x 10e7 MNC in ...
albumin from bovine serum (BSA), BODIPY® FL conjugate...
Biology Products: