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 $3 million renewal of one of longest-running NIH grants to Scripps Research
8. Keeping electric vehicle batteries cool
9. Toughened silicon sponges may make tenacious batteries
10. International Polar Year conference: From knowledge to action
11. Scientists study the catalytic reactions used by plants to split oxygen from water
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Stanford-SLAC team uses X-ray imaging to observe running batteries in action
(Date:3/24/2015)... Research and Markets ( http://www.researchandmarkets.com/research/kvdtcw/face_and_voice ) has announced ... Strategic Business Report" report to their offering. This ... US$ Thousands by the following Segments: Face Biometrics, and Voice Biometrics. ... Canada , Japan , Europe ... & Africa , and ...
(Date:3/23/2015)... March 23, 2015  In the 2014 fiscal year, ... conviction losses. This figure accounts for a fraction of ... The Nilson Report, exceeds $11 billion globally. The polygraph ... a crime has occurred. Investor Mark Saint Juste ... Joe Paolella partnered to administer the test ...
(Date:3/20/2015)... Markets ( http://www.researchandmarkets.com/research/vkzvcs/iris_biometrics ) has announced the addition ... report to their offering. This report analyzes ... report provides separate comprehensive analytics for the US, ... Europe , Asia-Pacific , ... . Annual estimates and forecasts are provided for ...
Breaking Biology News(10 mins):Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6Polygraph Test Now Used to Protect Investors From Fraud 2Polygraph Test Now Used to Protect Investors From Fraud 3Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 2Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 3Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 4Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 5
... a group of plant viruses that cause devastating disease ... with The American Phytopathological Society (APS). , According ... University of Arizona's Department of Plant Sciences, the whitefly, ... (transmitter) for a large group of emerging plant viruses ...
... around the world die of this type of meningitis, according ... the disease is called, can even spark epidemics: in Africa ... the late 1990s. Without treatment, mortality among those who ... percent. Patients also run a high risk of serious ...
... But exactly what our tears are made of has remained a ... the complex design of tears. What we think of as tears, ... microscopic layers. The middle, watery layer ?what we normally think of ... mucus and an outer layer of fatty, oily substances collectively called ...
Cached Biology News:Tears reveal some of their deepest secrets to researchers 2Tears reveal some of their deepest secrets to researchers 3
(Date:4/21/2015)... , April 21, 2015  This research service ... in the pharmaceuticals and biotechnology industry. The deals are ... are also observed based on the geographic region and ... cross-border deals and takes into account various deal multiples ... rise of the target company. Executive Summary ...
(Date:4/21/2015)... Texas , April 21, 2015 ... grow from $313.0 million in 2014 to $605.1 million by ... under consideration. Browse through the TOC of ... an in-depth analysis of the industry trends and segments, ... http://www.micromarketmonitor.com/market/north-america-bio-stimulants-6850160039.html Early buyers will ...
(Date:4/21/2015)... , April 21, 2015 AbilTo, Inc., the ... its abstract submission has been accepted as a presentation ... annual meeting taking place on June 5-6, 2015 in ... to the American Diabetes Association, the cost of diabetes ... billion. As a result of increased inpatient, outpatient, and ...
(Date:4/21/2015)... YORK , April 21, 2015 Immune ... that its Board of Directors has elected Rene-Pierre ... the Transaction and Pricing Committee, with oversight on strategic ... member of the Audit Committee, the Compensation Committee and ... his election, Mr. Azria commented: "I have a long-time ...
Breaking Biology Technology:Funding Patterns in the Global Pharma and Biotech Industry 2North America Biostimulants Market is Expected to Reach $605.1 Million by 2019, at a CAGR of 14.1% From 2014 to 2019 2North America Biostimulants Market is Expected to Reach $605.1 Million by 2019, at a CAGR of 14.1% From 2014 to 2019 3AbilTo To Present at the 2015 American Diabetes Association Annual Meeting on Remote Delivery of Behavioral Change Therapy 2AbilTo To Present at the 2015 American Diabetes Association Annual Meeting on Remote Delivery of Behavioral Change Therapy 3Immune Board Elects Rene-Pierre Azria A Director And Chair Of The Transaction Committee 2Immune Board Elects Rene-Pierre Azria A Director And Chair Of The Transaction Committee 3Immune Board Elects Rene-Pierre Azria A Director And Chair Of The Transaction Committee 4
...  AMPAC Fine Chemicals LLC (AFC), a wholly-owned ... has concluded an agreement with Chimerix, Inc. to validate ... in Chimerix,s broad spectrum antiviral drug candidate, CMX001, which ... smallpox.  Chimerix will provide the investigational drug product under ...
... FORT LEE, N.J., Aug. 11, 2011 Neurologix, ... of innovative gene therapies for disorders of the brain and ... three and six months ended June 30, 2011. ... a net loss of approximately $3.0 million, as compared with ...
... Genetics, Inc. (OTCQB: ILIU) announced today that CEO Lewis ... Management Access Conference at the Le Parker Meridien Hotel, 119 ... scheduled for Wednesday, Aug. 17 at 3:35 p.m. (EDT) in ... Interleukin,s management team will be available for one-on-one meetings ...
Cached Biology Technology:AMPAC Fine Chemicals Completes Contract Manufacturing Agreement for Smallpox Countermeasure API 2AMPAC Fine Chemicals Completes Contract Manufacturing Agreement for Smallpox Countermeasure API 3AMPAC Fine Chemicals Completes Contract Manufacturing Agreement for Smallpox Countermeasure API 4Neurologix Announces Second Quarter 2011 Financial Results 2Neurologix Announces Second Quarter 2011 Financial Results 3Neurologix Announces Second Quarter 2011 Financial Results 4Neurologix Announces Second Quarter 2011 Financial Results 5Neurologix Announces Second Quarter 2011 Financial Results 6Neurologix Announces Second Quarter 2011 Financial Results 7Neurologix Announces Second Quarter 2011 Financial Results 8Interleukin Genetics, Inc. to Present at the 2011 Wedbush Securities Life Sciences Management Access Conference 2