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:10/22/2014)... Diego, CA (PRWEB) October 22, 2014 ... balances from Sartorius, A & D Weighing, Rice ... Sartorius CPA Semi-Micro Balance . The Sartorius CPA ... for an affordable high-quality, precise, and user-friendly laboratory ... manufacturing of laboratory equipment, their laboratory balances are ...
(Date:10/22/2014)... VANCOUVER , Oct. 22, 2014 /PRNewswire/ - iCo ... ICOTF), today announced next steps for its Oral ... findings from its in vitro work ... therapy.  iCo now plans to complete pre clinical ... an initial Phase 1A clinical trial, utilizing approximately ...
(Date:10/20/2014)... 2014 Mapp Biopharmaceutical,s valiant effort to ... to fight the Ebola outbreak will make the ... production of pharmaceuticals can be, according to Kalorama ... while some may be taken aback by the ... industry knowledge are well aware of the complex ...
(Date:10/20/2014)... , Oct. 20, 2014  GenVec, Inc. (NASDAQ: ... P. Horovitz , Ph.D., from its board of directors effective ... in August 2003, and served as its chairman from June ... on the Nominating and Corporate Governance and Audit Committees of ... more than a decade of dedicated service to GenVec, and ...
Breaking Biology Technology:Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 2Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 3iCo Therapeutics Announces Advancement of Oral Amphotericin B Program 2iCo Therapeutics Announces Advancement of Oral Amphotericin B Program 3Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 3Zola P. Horovitz To Retire From GenVec Board 2
... Jointly Offer "Always on," Secure Solution For Mobile ... (Nasdaq:ADCT; www.adc.com ) and Network365 announced today a ... solution that helps generate additional revenue for mobile ... and trusted m-commerce transactions between operators, banks and ...
... a year in which Wisconsins real-time economy gained time ... news stories suggests the state is becoming a place where ... the champagne corks just yet: Wisconsin still has a long ... high-wage jobs as the state lost in the three-year manufacturing ...
... began requiring applicants to pay significant user fees when ... biologics. Such user fees have long been required for ... related to devices and biologics. In theory, user fees ... at what cost? User fees impose a significant financial ...
Cached Biology Technology:ADC and Network365 Team to Offer New End-to-End Mobile Payment System 2The (Tech) Economic Year in Review: Signs of Progress Amid Continuing Challenges 2The (Tech) Economic Year in Review: Signs of Progress Amid Continuing Challenges 3Fast Track: FDA User Fees: Do Faster Review Times Justify the Financial Burden? 2
(Date:10/17/2014)... To date, antidotes ... doctors are often limited to supportive therapy such as induced ... of drugs involved. So what can be done if a ... professor Jean-Christophe Leroux from the Institute of Pharmaceutical Sciences at ... "The task was to develop an agent that could eliminate ...
(Date:10/16/2014)... Washington land managers have a new synthesis of recent ... mixed-conifer (MMC) forests in the two states. , ... Eastern Oregon and Washington: A Synthesis of the Relevant ... general technical report published by the U.S. Forest Service,s ... a request from managers for a synthesis of the ...
(Date:10/16/2014)... Syncytial Virus causes severe respiratory tract infections and ... year. Scientists at VIB and Ghent University have ... counteract this common virus infection. , Xavier ... that paves the way for the development of ... virus that causes suffering in numerous small children ...
Breaking Biology News(10 mins):Emergency aid for overdoses 2Emergency aid for overdoses 3New report synthesizes best available science on management of moist mixed-conifer forests 2New perspectives for development of an RSV vaccine 2
... now receive early notice of outbreaks of toxic algae ... activities along the coast. Weekly bulletins generated by the ... on observations from state partners, coupled with models, imagery ... weather systems. "Early notification of blooms is essential, ...
... SAN ANTONIO While endogenous estrogen (i.e., estrogen produced ... well-known carcinogenic impact, hormone replacement therapy (HRT) utilizing estrogen ... reducing breast cancer risk, according to study results presented ... Symposium, held Dec. 8-12. "Our analysis suggests ...
... our understanding of human evolution have seen Walter and ... 2011 Gani Medal for Human Genetics by the Australian ... research in human genetics by early career researchers and ... Stephens Gani. Dr Oshlack, a senior research ...
Cached Biology News:Forecast system to warn of toxic algal outbreaks along Texas' shoreline 2Estrogen alone is effective for reducing breast cancer risk 2Genetic studies of human evolution win researcher 2011 Gani Medal 2
... The Helios gene gun system, 220-240 V, ... biomaterials into cells. This handheld device employs ... RNA-, and other biomaterial-coated gold microcarriers from ... cartridge directly into target cells. This system ...
Mouse polyclonal antibody raised against a partial recombinant MHC2TA. NCBI Entrez Gene ID = 4261...
... Digital Sight DS-L2 imaging controller is a ... DS-L1, and allows users to comfortably observe, ... DS-L2 controller features an 8.4 inch LCD ... variety of Nikon cameras including the DS-Fi1 ...
Mouse monoclonal antibody to ST8SIA2 - ST8 alpha-N-acetyl-neuraminide alpha-2,8-sialyltransferase 2...
Biology Products: