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:7/30/2015)... ... July 30, 2015 , ... The 2015 Market Research Report on the ... of the global Propanol market with a focus on the Chinese situation. Major companies ... Chemicals, Oxea, ISU Chemical, Sanofi, Royal Dutch Shell, LG Chem and Zhejiang Xinhua Chemical. ...
(Date:7/30/2015)... , ... July 30, 2015 , ... ... of a field clinical study of its canine osteoarthritis stem cell product, currently ... Therapeutics (Kansas City, KS) and will be marketed in the US by Aratana. ...
(Date:7/30/2015)... , Inc. (NASDAQ: SNMX ), a leading company ... commercialize novel flavor ingredients for the food, beverage, and ... second quarter 2015. "Moving into the ... achieve our commercial and financial goals," stated John Poyhonen, ... our last quarterly earnings report, our two partners have ...
(Date:7/30/2015)... COPENHAGEN, Denmark , July 30, 2015 /PRNewswire/ ... a biotechnology company that applies its innovative TransCon ... announced positive top-line results from a six-month Phase ... of once-weekly TransCon Growth Hormone in 53 treatment-naïve, ... "We are extremely pleased with the ...
Breaking Biology Technology:Global Propanol Market Technical Data and Manufacturing Analysis 2020 2Global Propanol Market Technical Data and Manufacturing Analysis 2020 3VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 2VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 3SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 2SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 3SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 4SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 5SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 6SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 7SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 8SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 9Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 2Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 3Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 4Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 5Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 6Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 7
... Aug. 26 Bio-Reaction Industries is,pleased to announce ... executive,David Skiven as the newest member on their ... environmentally responsible innovations that Mr.,Skiven oversaw during his ... Group at GM, it,s logical that he would ...
... for Biopharmaceutical, Cell,Culture, Life Science Research and Diagnostics Industry Adds ... Productivity, ... Safety and Time to Market, FORT ... global supplier of animal free,products that enhance productivity, safety and ...
... NEEDHAM, Massachusetts, August 26 /PRNewswire-FirstCall/,-- Oridion Systems ... agreement with,Spacelabs Healthcare, a leading global medical ... now employs Oridion Microstream(R),capnography technology in its ... Spacelabs Healthcare, recognizing the importance of ...
Cached Biology Technology:GM Exec Joins Bio-Reaction Industries' Board of Directors 2InVitria Expands Sales Team 2InVitria Expands Sales Team 3Oridion Expands its OEM Partnerships - New Agreement with Spacelabs Healthcare 2Oridion Expands its OEM Partnerships - New Agreement with Spacelabs Healthcare 3Oridion Expands its OEM Partnerships - New Agreement with Spacelabs Healthcare 4
(Date:7/31/2015)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or ... growing mobile commerce market and creator of the Wocket® ... 62/198989 for ELECTRONIC CRYPTO-CURRENCY MANAGEMENT METHOD AND ... advance crypto-currencies such as Bitcoin into the consumer market ... to manage all payments.  The technology ...
(Date:7/30/2015)... , July 30, 2015 Cellecta, Inc., ... gene function analysis and biomarker discovery, announced the ... Knockout Library targeting all human protein coding genes. ... "knock out" a gene,s function. Cellecta,s new Human ... throughput screening tool so that researchers can investigate ...
(Date:7/27/2015)... , July 27, 2015   Zynx Health ... experience-based clinical improvement solutions, today announced that its ... now available on Android smartphones and tablets. With ... post-care organizations can use ZynxCarebook to securely exchange ... condition, streamline care transitions to other care settings, ...
Breaking Biology News(10 mins):NXT-ID Patents Electronic Crypto-Currency Management Technology 2NXT-ID Patents Electronic Crypto-Currency Management Technology 3NXT-ID Patents Electronic Crypto-Currency Management Technology 4CELLECTA, INC. Announces Launch of Human Whole Genome CRISPR Knockout Library 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 3
... Knut Stamnes, Professor and Department Director of Physics ... has been awarded a NASA grant for work ... satellite. His proposal to "use and further develop ... coupled atmosphere-surface systems" is funded as part of ...
... Senior Design team at Stevens Institute of Technology is ... arise during thoracic surgeries. Five undergraduate Biomedical Engineering students ... of existing catheter design and introduces a potentially profitable ... the efforts of the Stevens Innovative Fluid Extraction System ...
... revealing how age-old irrigation techniques may have boosted the ... an estimated 200 million people today. ... kingdom that was located in present-day Sudan, provides details ... disease across populations in ancient times, and how human ...
Cached Biology News:Dr. Knut Stamnes at Stevens receives NASA grant for environmental monitoring 2Dr. Knut Stamnes at Stevens receives NASA grant for environmental monitoring 3Stevens thoracic catheter senior design team takes 1st place at regional ISPE competition 2Stevens thoracic catheter senior design team takes 1st place at regional ISPE competition 3Mummies tell history of a 'modern' plague 2Mummies tell history of a 'modern' plague 3