Navigation Links
New device stores electricity on silicon chips
Date:10/23/2013

to improve the energy density of supercapacitors has focused on carbon-based nanomaterials like graphene and nanotubes. Because these devices store electrical charge on the surface of their electrodes, the way to increase their energy density is to increase the electrodes' surface area, which means making surfaces filled with nanoscale ridges and pores.

"The big challenge for this approach is assembling the materials," said Pint. "Constructing high-performance, functional devices out of nanoscale building blocks with any level of control has proven to be quite challenging, and when it is achieved it is difficult to repeat."

So Pint and his research team graduate students Landon Oakes, Andrew Westover and post-doctoral fellow Shahana Chatterjee decided to take a radically different approach: using porous silicon, a material with a controllable and well-defined nanostructure made by electrochemically etching the surface of a silicon wafer.

This allowed them to create surfaces with optimal nanostructures for supercapacitor electrodes, but it left them with a major problem. Silicon is generally considered unsuitable for use in supercapacitors because it reacts readily with some of chemicals in the electrolytes that provide the ions that store the electrical charge.

With experience in growing carbon nanostructures, Pint's group decided to try to coat the porous silicon surface with carbon. "We had no idea what would happen," said Pint. "Typically, researchers grow graphene from silicon-carbide materials at temperatures in excess of 1400 degrees Celsius. But at lower temperatures 600 to 700 degrees Celsius we certainly didn't expect graphene-like material growth."

When the researchers pulled the porous silicon out of the furnace, they found that it had turned from orange to purple or black. When they inspected it under a powerful scanning electron microscope they found that it looked nearly identical to the original material but
'/>"/>

Contact: David F. Salisbury
david.salisbury@vanderbilt.edu
615-343-6803
Vanderbilt University
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. ResearchMoz: Ophthalmic Devices Market to 2017 - Glaucoma and Cataract Surgery Devices, Minimally Invasive Procedures in Ophthalmic Surgery to Drive the Ophthalmic Surgery Market
2. New magnetic-field-sensitive alloy could find use in novel micromechanical devices
3. Drexel expert: Efficiency metrics for energy storage devices need standardization
4. FDA Establishes New Product Codes for Interbody Devices With Integrated Fixation
5. Low-cost paper-based wireless sensor could help detect explosive devices
6. New method for enhancing thermal conductivity could cool computer chips, lasers and other devices
7. ResearchMoz: Logic Integrated Circuit (IC) Market to 2020 - Programmable Logic Devices (PLD) and Application Specific Standard Product (ASSP) Dominate with a 78% Market Share
8. Powerful AAC Device With Intel® i7 Processor Enables Natural Communication for Stroke, ALS and Autism Patients
9. Research at Rice University leads to nanotube-based device for communication, security, sensing
10. First successful human results achieved: Implantable wireless microchip drug delivery device
11. New Revolutionary Femoral Access Site Closure Device Shows Unparalleled Efficacy, Safety & Ease of Use, in a Wide Range of Patients Including Patients With a Challenging Anatomy
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New device stores electricity on silicon chips
(Date:9/16/2014)... 2014 BlueInGreen® , a ... method for delivering dissolved gases into liquids, announced ... as a manufacturer’s representative firm to its sales ... for municipal water and wastewater applications in the ... was founded in 1992 and serves Quebec and ...
(Date:9/16/2014)... 16, 2014 CIRTEC Medical Systems’ Board ... as CEO of CIRTEC. , “I am delighted ... the Company.” noted Brian Highley. “The company has made ... strong organic growth over the past two years. The ... to improve and expand the services Cirtec offers its ...
(Date:9/16/2014)... (PRWEB) September 16, 2014 ... initiatives to position themselves for their 89th ... labeling and encoding, Pharma Packaging Solutions is ... hardware and software and new procedures. Establishing ... Good Manufacturing Practices (cGMP), Pharma Packaging Solutions ...
(Date:9/16/2014)... Calif. , Sept. 16, 2014 /PRNewswire-iReach/ -- ... index (BMSi) test identifies patients with bone fragility ... Over 160 million people worldwide are at risk ... by today,s standard bone strength test, the DEXA ... 2014 American Society for Bone and Mineral Research ...
Breaking Biology Technology:BlueInGreen® Expands into Canada – Signs Representative Agreement with H2Flow Equipment Inc. 2Adding Serialization Capabilities and Expanded Capacity, Pharma Packaging Solutions Is Preparing for 89th Year of Business 2ActiveLife's BMSi Test Provides Hope for 160 Million with Undetectable Risk of Bone Fracture 2ActiveLife's BMSi Test Provides Hope for 160 Million with Undetectable Risk of Bone Fracture 3
... In light of an announcement made recently by Astellas Pharma ... that it had received a letter dated November 13, 2008 ... acquire CV Therapeutics at a price of $16.00 per share, ... After careful deliberation, with the assistance of its financial ...
... Alfacell Corporation (OTC Bulletin Board: ACEL) today reported that ... Food and Drug Administration (FDA) to discuss the company,s ... rolling New Drug Application (NDA) for the treatment of ... meeting, the FDA provided guidance to the company recommending ...
... Conference Call and Webcast Scheduled for Tuesday, February 3, ... (Nasdaq: NBIX ) announced today that the ... financial results after the Nasdaq market closes on Tuesday, ... conference call and webcast to discuss its financial results ...
Cached Biology Technology:CV Therapeutics Statement on Unsolicited Proposal From Astellas 2CV Therapeutics Statement on Unsolicited Proposal From Astellas 3Alfacell Provides ONCONASE(R) NDA Submission Update 2Alfacell Provides ONCONASE(R) NDA Submission Update 3Neurocrine Biosciences Announces Conference Call and Webcast to Present Fourth Quarter and Year End 2008 Financial Results 2
(Date:9/15/2014)... Mass. (September 15, 2014) The so-called central ... makes proteinhas long provided a simplified explanation for ... living organisms. , In reality, of course, ... schema first articulated nearly 60 years ago by ... double-helix structure. For one, there are multiple types ...
(Date:9/15/2014)... cell division has evolved a simple, mechanical solution ... the Sept. 11 Science Express. ... counts and misalignments that lead to infertility, miscarriage, ... cell division cause these problems, but what exactly ... Marston of the Wellcome Trust Center for Cell ...
(Date:9/15/2014)... that a single group of microorganisms may be responsible ... the oceans, with implications for the global carbon cycle ... essential molecule required by most life on this planet, ... of microorganisms because it is so large and complex. ... maintaining the brain and nervous systems, as well as ...
Breaking Biology News(10 mins):Scientists discover RNA modifications in some unexpected places 2Cells simply avoid chromosome confusion 2Cells simply avoid chromosome confusion 3Researchers discover new producer of crucial vitamin 2
... to play in urgently-needed new treatments to fight the virulent ... Strathclyde in Glasgow, Scotland. The scientists found that ... in the Pacific region, was active against MRSA, which causes ... was either the underlying cause or a contributory factor in ...
... have developed a way of accurately predicting when women will ... difference between the predicted age and the actual age that ... a third of a year, and the maximum margin of ... Ramezani Tehrani will tell the 26th annual meeting of the ...
... new technology that allows scientists to monitor how individual cells ... researchers have uncovered a much larger spectrum of differences between ... act in a uniform fashion, as was previously thought. ... Markus Covert, PhD, assistant professor of bioengineering and senior author ...
Cached Biology News:Bees help to beat MRSA bugs 2Researchers develop accurate way to predict the age when women will hit the menopause 2Researchers develop accurate way to predict the age when women will hit the menopause 3Same types of cell respond differently to stimulus, Stanford study shows 2Same types of cell respond differently to stimulus, Stanford study shows 3
Goat polyclonal to Duffy / FY / DARC...
SMVT (N-14)...
... Description: Proteinase K is a ... wide range of applications purified from the fungus ... the carboxyl group of N-substituted hydrophobic aliphatic and ... as a serine protease. Proteinase K is useful ...
... The H2OBIT™ is a fully licensed, high throughput, ... processing of up to 24 microplates. This equates ... plates. A robotic arm rapidly transfers ... resulting in temperature ramping times that are considerably ...
Biology Products: