Navigation Links
Silicon sponge improves lithium-ion battery performance
Date:7/10/2014

the material that causes it to break. Many scientists have attempted to make tiny, nano-sized battery components with the idea that the smaller size would give silicon enough room to expand, but these efforts haven't produced market-ready technologies.

A sponge solution

Zhang and his PNNL colleagues wondered if a sponge-like silicon electrode would do the trick. Others had etched pores into a silicon electrode's surface, but hadn't succeeded in creating holes throughout the material. So they approached Michael Sailor, a University of California, San Diego chemist whose research includes using porous silicon to detect pollutants and deliver drugs, for help. PNNL used Sailor's method to create porous silicon placing thin sheets in a chemical bath to etch out tiny holes throughout the material and then coated the result with a thin layer of conductive carbon to make their electrodes.

Next, the team collaborated with materials scientist Chongmin Wang, who specializes in using in-situ transmission electron microscopes at DOE's EMSL, the Environmental Molecular Sciences Laboratory at PNNL. Wang uses powerful microscopes to record close-up videos of tiny batteries, allowing researchers to better understand the physical and chemical changes that batteries undergo as they operate. Wang put the team's sponge-like, carbon-coated silicon electrode through a series of charges and discharges under the microscope's careful eye.

Space to grow

The team observed that while being charged, the new electrode mostly expanded into the empty spaces created by the material's porous structure. The outside shape of the electrode only expanded by 30 percent much less than the 300 percent usually seen in silicon electrodes. And the new electrode didn't break down. After more than 1,000 charge-and-discharge cycles, the electrode maintained more than 80 percent of its initial energy storage capacity.

Next, Zhang and his colleagues plan
'/>"/>

Contact: Franny White
franny.white@pnnl.gov
509-375-6904
DOE/Pacific Northwest National Laboratory
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Applied Silicone Launches Ultra-Soft LSR
2. In-depth Research on China Organic Silicon Industry, 2013-2017 (Update Version)
3. Amedica Signs Agreement with Kyocera for Commercial Manufacture of Silicon Nitride Medical Devices
4. Stanford scientists create a low-cost, long-lasting water splitter made of silicon and nickel
5. New device stores electricity on silicon chips
6. NIST/JQI team gets the edge on photon transport in silicon
7. Brainwave Signal Interpretation Software Company EyeMynd Announces Move to Silicon Valley
8. MarketPublishers.com Added New Report on Silicon Nitride (CAS 12033-89-5) Market to Its Catalogue
9. NASA Scientists and Silicon Valley Space Center Partners Make Home Team Bid for Moffett Federal Airfield Development
10. MarketPublishers.com Added New Report on Silicon Tetrafluoride (CAS 7783-61-1) Market to Its Catalogue
11. Next Silicon Valley BioTalks Tackles “Is EDC Becoming a Commodity?” at Onyx Pharmaceuticals HQ
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/3/2015)... , Aug. 3, 2015  Halozyme Therapeutics, Inc. ... Conference Call for the second quarter 2015 on Monday, ... Dr. Helen Torley , president and chief executive ... post-market, Halozyme will release financial results for the second ... live through the "Investors" section of Halozyme,s corporate website ...
(Date:8/3/2015)... ... August 03, 2015 , ... ... is processed to get such derivatives as ethylbenzene, a precursor to styrene, used ... within the automotive industry for the production of tyres and other components. Thus, ...
(Date:8/3/2015)... E-QURE Corp. (OTCQB: EQUR), a ... Signal Therapy device ("BST Device"), a new and novel ... chronic wounds, today announced that the Company has signed ... specializing in medical devices, for the marketing and distribution ... 70 years old, sales, marketing and distribution company in ...
(Date:8/3/2015)... ... August 03, 2015 , ... ... pumps to its comprehensive line of analytical laboratory equipment. With optimized features, such ... pumps provide a chemically resistant and maintenance-free solution for a broad range of ...
Breaking Biology Technology:Halozyme to Host Second Quarter 2015 Financial Results Conference Call 2World Benzene Market to Surpass 46 MMT by 2020, According to TechSci Research Report Published at MarketPublishers.com 2World Benzene Market to Surpass 46 MMT by 2020, According to TechSci Research Report Published at MarketPublishers.com 3E-QURE Corp Signs Second Distribution Agreement in Israel 2E-QURE Corp Signs Second Distribution Agreement in Israel 3Sterlitech Launches New Line of Vacuum Pumps 2
... Madison, Wis. -- Rita Colwell, former director of ... Pollution and Human Health" at 5:30 p.m. Monday, Oct. ... of Wisconsin-Madison's Memorial Union. , ,Colwell headed the NSF ... Inc., and is a distinguished professor at the University ...
... Wis. -- Three Wisconsin businesses will receive funding ... Commerce Technology Assistance Grant (TAG) and Technology Venture Fund ... , SonoPlot, Inc. is a Madison company established in ... $100,000 TVF loan to purchase equipment and develop a ...
... help of new silicon-based compounds, scientists - and patients ... the tiny lithium batteries used in implantable devices to ... lithium battery is the workhorse of implantable devices, which ... the central nervous system make critical connections in, for ...
Cached Biology Technology:New battery technology helps stimulate nerves 2New battery technology helps stimulate nerves 3
(Date:7/9/2015)... JOSE, Calif. , July 9, 2015  Synaptics ... interface solutions, announced today that it will report financial ... on Thursday, July 30, 2015 after the close of ... for analysts and investors at 2:00 p.m. PT (5:00 ...   To participate on the live call, ...
(Date:7/8/2015)... NEW YORK , July 8, 2015 ... cancer globally, and the fourth most fatal, with a ... year. The poor prognosis of pancreatic cancer patients has ... to treatment, which is not being met by the ... contains an array of products with varying molecule types ...
(Date:7/7/2015)... , June 30, 2015 ... has announced the addition of the "Capacitive ... offering. To this date, fingerprint sensing ... technology and fingerprint sensors are well developed. This ... sensing technology. The domain of capacitive ...
Breaking Biology News(10 mins):Synaptics to Report Fourth Quarter, Fiscal Year 2015 Results on July 30 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 3Worldwide Capacitive Fingerprint Sensors Patent Landscape Market Report 2015-2020 - Main IP Holders include Seiko Epson, AuthenTec, Sony and STMicroelectronics 2
... $5 million National Science Foundation (NSF) grant to upgrade ... Owens Valley Solar Array (OVSA) http://www.ovsa.njit.edu/ ... is expected to help scientists better understand the nature ... the military. "Space weather incidents such as ...
... What:,Based on what we know about smoking, diet, ... estimate we could prevent approximately half of all ... Association for Cancer Research will host its Ninth ... Research at the Pennsylvania Convention Center, located in ...
... Bad Hofgastein, 6 October 2010 -- European patients are in ... medically assisted reproduction (MAR) treatment, experts from the European Society ... European Health Forum Gastein (EHFG). The EHFG is ... EU. This year it has attracted about 600 decision-makers from ...
Cached Biology News:$5 million NSF grant will upgrade and expand NJIT radio telescope array 2$5 million NSF grant will upgrade and expand NJIT radio telescope array 3Reproductive health: Checkerboard of infertility treatment in Europe 2Reproductive health: Checkerboard of infertility treatment in Europe 3
5-bromo-2'-deoxyuridine (BrdU) Cell Biology Cell Proliferation Bromodeoxyuridine (BrdU) and Related Products...
2'-Fluorine-CTP (2'-F-CTP) is readily incorporated into transcripts by T7 and SP6 R&DNA™ Polymerase and is available separately....
... J. Karn (1995) This volume ... and methods for the study of major ... reverse transcriptase, ribonuclease H, integrase and protease. ... binding assays; Tat and Rev assays; HIV/CD4 ...
Human Glypican 2 Biotinylated Affinity Purified PAb...
Biology Products: