Navigation Links
Silicon-carbon electrodes snap, swell, don't pop
Date:3/14/2012

licon's unstructured quality allowed it to swell evenly. This compares favorably to silicon alone, which swells unevenly, causing imperfections.

In addition to swelling, lithium is known to cause other changes to the silicon. The combination of lithium and silicon initially form an unstructured, glassy layer. Then, when the lithium to silicon ratio hits 15 to 4, the glassy layer quickly crystallizes, as previous work by other researchers has shown.

Wang and colleagues examined the crystallization process in the microscope to better understand it. In the microscope video (http://pubs.acs.org/doi/suppl/10.1021/nl204559u/suppl_file/nl204559u_si_003.avi), they could see the crystallization advance as the lithium filled in the silicon and reached the 15 to 4 ratio.

They found that this crystallization is different from the classic way that many substances crystallize, which builds from a starting point. Rather, the lithium and silicon layer snapped into a crystal all at once when the ratio hit precisely 15 to 4. Computational analyses of this crystallization verified its snappy nature, a type of crystallization known as congruent phase transition.

But the crystallization wasn't permanent. Upon discharging, the team found that the crystal layer became glassy again, as the concentration of lithium dropped on its way out of the silicon.

To determine if repeated use left its mark on the electrode, the team charged and discharged the tiny battery 4 times. Comparing the same region of the electrode between the first and fourth charging, the team saw the surface become rough, similar to a road with potholes.

The surface changes were likely due to lithium ions leaving a bit of damage in their wake upon discharging, said Wang. "We can see the electrode's surface go from smooth to rough as we charge and discharge it. We think as it
'/>"/>

Contact: Mary Beckman
mary.beckman@pnnl.gov
509-375-3688
DOE/Pacific Northwest National Laboratory
Source:Eurekalert  

Page: 1 2 3 4

Related biology technology :

1. Manufacturing made to measure atomic-scale electrodes
2. Charging makes nano-sized electrodes swell, elongate and spiral
3. Liquid metal key to simpler creation of electrodes for microfluidic devices
4. UCLA team develops highly efficient method for creating flexible, transparent electrodes
5. Ondine Announces Presentation of Positive Clinical Trial Results at the American Academy of Periodontologys 94th Annual Meeting
6. Boston University Periodontal Study on Imagenetix Compound Published in The Journal of Periodontology
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Silicon-carbon electrodes snap, swell, don't pop
(Date:1/22/2015)... January 22, 2015 Controlled Substance Compliance ... which helps companies check the legal requirements around using ... to China. , As their international operations expand ... adopting software solutions built as a result of the ...
(Date:1/22/2015)... , 22 de enero de 2015  El Dr. ... su llamada a nominaciones para 2015. Este prestigioso premio ... o tiene el potencial para hacer, contribuciones destacadas para ... aceptarán hasta el 15 de marzo de 2015 a ...
(Date:1/22/2015)... 2015   GenoSpace , a precision medicine software company that ... broad use of genomic, imaging and other biomedical data in ... Michelle Munson , CEO of Aspera, an IBM Company, to ... http://photos.prnewswire.com/prnh/20150122/170713 "We are pleased to ...
(Date:12/24/2014)... , Dec. 24, 2014  United Therapeutics Corporation (NASDAQ: ... (NYSE: MDT ) has submitted a pre-market ... (FDA) for the use of Medtronic,s SynchroMed ® ... catheter) for use with United Therapeutics, Remodulin ® ...
Breaking Biology Technology:Global Compliance Service for Controlled Substances to Expand to China 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4GenoSpace Expands Board with Appointment of Michelle Munson 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4
... May 7 Dendreon Corporation (Nasdaq: DNDN ) today announced ... Bank of America and Merrill Lynch 2009 Health Care Conference, ... May 12, 2009, 9:20 a.m. ET, ... Tuesday, May 19, 2009, 4:35 p.m. ...
... Thursday, May 7, 2009 at 4:30 p.m. Eastern ... OncoGenex Pharmaceuticals, Inc. ("OncoGenex" or the "Company") (NASDAQ: ... results for the three months ended March 31, ... first quarter of 2009. , The following consolidated ...
... 6 Spectros Corporation (Portola Valley, CA) filed ... Scientific (NYSE: TMO ), alleging infringement ... 3300 product. Spectros invented and commercialized solid-state, broadband, ... and incorporated these into its flagship T-Stat product, ...
Cached Biology Technology:OncoGenex Reports First Quarter Financial Results 2OncoGenex Reports First Quarter Financial Results 3OncoGenex Reports First Quarter Financial Results 4OncoGenex Reports First Quarter Financial Results 5OncoGenex Reports First Quarter Financial Results 6Spectros Corporation Protects Its Cool White LED Spectroscopy Technology Against Alleged Infringement by Thermo Fisher Scientific 2
(Date:1/22/2015)... ("Company") (BM&FBOVESPA: VLID3 ON), is pleased to inform its shareholders ... Washington,s Department of Licensing, in the United States, awarded ... for driver,s licenses and identification cards to its subsidiary, Valid ... start in January 2015, with enrollment and card production starting ...
(Date:1/22/2015)... , Jan. 13, 2015  Today, FreeWavz ( ... launched its crowdfunding campaign on Fundable, https://www.fundable.com/freewavz ... build of production capacity to meet customer demand. ... Photo - http://photos.prnewswire.com/prnh/20150113/168790 ...
(Date:1/22/2015)...  BellBrook Labs, a leader in high throughput screening ... a TR-FRET (time resolved Forster resonance energy transfer) ... high throughput screening assay for glycosyltransferases and other ... sensitive detection of hundreds of human and microbial ...
Breaking Biology News(10 mins):Valid USA Signs Contract For Washington Driver's License Issuance 2FreeWavz Launches on Fundable to Drive Speed-to-Market in 2015 2BellBrook Labs Launches a High Throughput Screening Assay for Glycosyltransferases with TR-FRET Readout 2
... Institute researcher Dr Matthew Call has been awarded ... Innovation (VESKI) Fellowship by the Victorian Government to ... and signalling. Dr Call,s research could signal ... treating immune diseases, using creative ,membrane mimic, technology ...
... born to mothers who are fed a diet supplemented with ... scientists at the Jean Mayer USDA Human Nutrition Research Center ... research in humans and mice suggests that B vitamins, particularly ... Using a mouse model of naturally occurring colorectal cancer, the ...
... Ariz. June 9, 2011 TGen Drug Development ... the rapid development of anti-cancer drugs and deliver them ... "The highest quality medical imaging provided by Imaging ... Dr. Stephen Gately, President of TD2, which assists drug ...
Cached Biology News:Structural biologist wins $150K for 'membrane mimic' technology 2B vitamins in mother's diet reduce colorectal cancer risk in offspring 2TGen Drug Development partners with Imaging Endpoints for comprehensive clinical trial services 2
... produced by a patented microwave process which ... consistent, even cell attachment, increased cell growth ... growth uunder difficult conditions, including reduced serum ... a more ecominic alternative to expensive and ...
Automated Cell Culture Flask...
... Bio-Plex suspension array system, 100-240 V, uses ... up to 100 proteins and peptides in ... composed of up to 100 color-coded bead ... with a unique reactant (enzyme substrates, receptors, ...
Cell Culture Flask, 75 cm, treated polystyrene...
Biology Products: