Navigation Links
Stanford-SLAC team uses X-ray imaging to observe running batteries in action
Date:7/18/2012

Most electric cars, from the Tesla Model S to the Nissan Leaf, run on rechargeable lithium-ion batteries a pricey technology that accounts for more than half of the vehicle's total cost. One promising alternative is the lithium-sulfur battery, which can theoretically store five times more energy at a much lower cost.

But lithium-sulfur technology has a major drawback: After a few dozen cycles of charging and discharging, the battery stops working.

"The cycle life of lithium-sulfur batteries is very short," said Johanna Nelson, a postdoctoral scholar at the SLAC National Accelerator Laboratory at Stanford University. "Typically, after a few tens of cycles the battery will die, so it isn't viable for electric vehicles, which require many thousands of cycles over a 10- or 20-year lifetime."

A typical lithium-sulfur battery consists of two electrodes a lithium metal anode and a sulfur-carbon cathode surrounded by a conductive fluid, or electrolyte. Several studies have attributed the battery's short cycle life to chemical reactions that deplete the cathode of sulfur.

But a recent study by Nelson and her colleagues is raising doubts about the validity of previous experiments. Using high-power X-ray imaging of an actual working battery, the Stanford-SLAC team discovered that sulfur particles in the cathode largely remain intact during discharge. Their results, published in the Journal of the American Chemical Society (JACS), could help scientists find new ways to develop commercially viable lithium-sulfur batteries for electric vehicles.

"Based on previous experiments, we expected sulfur particles to completely disappear from the cathode when the battery discharges," said Nelson, the lead author of the JACS study. "Instead, we saw only negligible changes in the size of the particles, the exact opposite of what earlier studies found."

Nelson and her co-workers conducted their experiments at SLAC using
'/>"/>

Contact: Mark Shwartz
mshwartz@stanford.edu
650-723-9296
Stanford University
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Dental X-rays linked to common brain tumor
2. More effective method of imaging proteins
3. High-resolution atomic imaging of specimens in liquid by TEM using graphene liquid cell
4. Trial seeks improved lung-cancer screening by combining imaging and biomarkers
5. Radiologists study necessity of additional imaging recommendations in PET/CT oncologic reports
6. Microcirculation imaging
7. Scientist wins $3 million renewal of one of longest-running NIH grants to Scripps Research
8. Keeping electric vehicle batteries cool
9. Toughened silicon sponges may make tenacious batteries
10. International Polar Year conference: From knowledge to action
11. Scientists study the catalytic reactions used by plants to split oxygen from water
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Stanford-SLAC team uses X-ray imaging to observe running batteries in action
(Date:12/19/2014)... 18, 2014 Research and Markets ( http://www.researchandmarkets.com/research/8kmfcn/iphone_5s ... 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - ... http://photos.prnewswire.com/prnh/20130307/600769 Following the ... fingerprint reading feature with the iPhone 5S. It is ...
(Date:12/17/2014)... , Dec. 15, 2014 Research and Markets ... "Samsung Galaxy S5 - Home Button Synaptics Fingerprint ... http://photos.prnewswire.com/prnh/20130307/600769 Based ... 5S, Samsung introduces for the first time a fingerprint ...
(Date:12/17/2014)... 16, 2014 Research and Markets ( http://www.researchandmarkets.com/research/9zq33j/global_chemical ... Chemical Sensor Market 2015-2019" report to their offering. ... One major trend upcoming in this market is the ... sensors help in recording of patient data for quick ...
Breaking Biology News(10 mins):iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2
... 21, 2011) -- In a surprising new study, researchers ... software have made a startling discovery that rules out ... how bacteria self-organize into multicellular aggregate mounds. The study ... Georgia appears online this week in the Proceedings ...
... University of Illinois entomology professor and department ... Tyler Prize for Environmental Achievement, an international ... in an outstanding manner to scientific knowledge and ... of the world." Previous Tyler Prize recipients ...
... -- Marine biologists have solved a conundrum that has stumped ... It may sound simple, but the task is actually complex ... oceans, coral reefs and the marine life that populate them. ... scientists from the University of Miami (UM) and NOAA Fisheries ...
Cached Biology News:Biofilm reorganization: Back to the theoretical drawing board 2Biofilm reorganization: Back to the theoretical drawing board 3Illinois entomology professor May Berenbaum to receive 2011 Tyler Prize 2Illinois entomology professor May Berenbaum to receive 2011 Tyler Prize 3One fish, two fish … reef fish 2
(Date:12/24/2014)... 2014 Earlier this year in a June ... the Adult Stem Cell Technology Center, LLC ( ASCTC ) ... property of adult tissue stem cells. His title “Asymmetric ... for the Future,” embodied the essence of his message to ...
(Date:12/24/2014)... 2014 On Friday, December 19, 2014, ... and Continuing Resolution Appropriations Act of 2015, which for ... receive funding through the Congressionally Directed Medical Research Programs ... Hydrocephalus Association (HA), working in conjunction with its allies ...
(Date:12/24/2014)... Texas (PRWEB) December 23, 2014 ... such as its definition, classification, application and industry ... process, and product cost structure. Production is separated ... covers upstream raw materials, equipment, downstream client survey, ...
(Date:12/24/2014)... 24, 2014 The report expects global cell ... It also provides a carefully analyzed data about the vital ... , Full Copy of Report @ http://bit.ly/1yUxy0T , ... will keep witnessing growth at an impressive CAGR during near ...
Breaking Biology Technology:Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 3Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 4Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 3
... Produces Isobutene From... -- EVRY, France, October 6, 2010 ... ... ... first_result; // Results are keyed by longUrl, so we need to grab the first one. for (var ...
... 6, 2010 ... ... var shortURL = ... so we need to grab the first one. for (var r in data.results) { first_result = data.results[r]; ...
... Knowing how to build nanosized assemblies of polymers (long ... range of industrial processes, from the production of nanofibers, ... nanoscale circuits and devices. A recent paper in ... polymers in specially engineered confined spaces, opening the door ...
Cached Biology Technology:Global Bioenergies Succeeds in Creating a Bacterial Prototype That Produces Isobutene From Glucose 2Global Bioenergies Succeeds in Creating a Bacterial Prototype That Produces Isobutene From Glucose 3Global Bioenergies Succeeds in Creating a Bacterial Prototype That Produces Isobutene From Glucose 4Global Bioenergies Succeeds in Creating a Bacterial Prototype That Produces Isobutene From Glucose 5Global Bioenergies Succeeds in Creating a Bacterial Prototype That Produces Isobutene From Glucose 6Global Bioenergies Succeeds in Creating a Bacterial Prototype That Produces Isobutene From Glucose 7Elsevier Introduces Article-Based Publishing to Increase Publication Speed 2Elsevier Introduces Article-Based Publishing to Increase Publication Speed 3Elsevier Introduces Article-Based Publishing to Increase Publication Speed 4Elsevier Introduces Article-Based Publishing to Increase Publication Speed 5Elsevier Introduces Article-Based Publishing to Increase Publication Speed 6Elsevier Introduces Article-Based Publishing to Increase Publication Speed 7Elsevier Introduces Article-Based Publishing to Increase Publication Speed 8Building a smaller, lighter future: Understanding polymer behaviors below 1 nanometer 2
... The thermostable dUTPase(pyrococcus fruriosus) ... (using proofreading DNA polymerases). It ... reactions and dNTP solutions. The ... DNA polymerase reaction can prevent dUTP ...
... AVOID FREEZE/THAW CYCLES. An assay kit designed ... Western blotting. PARP is an enzyme implicated ... apoptosis, PARP is cleaved by caspase-3. Cleavage ... to 85 kDa is a hallmark of ...
... save space and organize gloves, ... other garb. They are the ... small parts used in labs, ... Many other sizes and custom ...
... save space and organize gloves, ... other garb. They are the ... small parts used in labs, ... Open-slot design for easy cleaning. ...
Biology Products: