Navigation Links
Stanford researchers use river water and salty ocean water to generate electricity
Date:3/29/2011

Stanford researchers have developed a battery that takes advantage of the difference in salinity between freshwater and seawater to produce electricity.

Anywhere freshwater enters the sea, such as river mouths or estuaries, could be potential sites for a power plant using such a battery, said Yi Cui, associate professor of materials science and engineering, who led the research team.

The theoretical limiting factor, he said, is the amount of freshwater available. "We actually have an infinite amount of ocean water; unfortunately we don't have an infinite amount of freshwater," he said.

As an indicator of the battery's potential for producing power, Cui's team calculated that if all the world's rivers were put to use, their batteries could supply about 2 terawatts of electricity annually that's roughly 13 percent of the world's current energy consumption.

The battery itself is simple, consisting of two electrodes one positive, one negative immersed in a liquid containing electrically charged particles, or ions. In water, the ions are sodium and chlorine, the components of ordinary table salt.

Initially, the battery is filled with freshwater and a small electric current is applied to charge it up. The freshwater is then drained and replaced with seawater. Because seawater is salty, containing 60 to 100 times more ions than freshwater, it increases the electrical potential, or voltage, between the two electrodes. That makes it possible to reap far more electricity than the amount used to charge the battery.

"The voltage really depends on the concentration of the sodium and chlorine ions you have," Cui said. "If you charge at low voltage in freshwater, then discharge at high voltage in sea water, that means you gain energy. You get more energy than you put in."

Once the discharge is complete, the seawater is drained and replaced with freshwater and the cycle can begin again. "The key thing here is
'/>"/>

Contact: Louis Bergeron
louisb3@stanford.edu
650-725-1944
Stanford University
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Vermillion and Stanford Scientists Receive Best Research Award From the PAD Coalition
2. Stanford: Quantum computing spins closer
3. Cell Biosciences Delivers Next Generation System to Stanford University
4. Artemis Health Licenses Prenatal Cell-Free DNA Analysis Technology from Stanford University
5. Stanford writes in worlds smallest letters
6. Kornberg Associates Architects Selected to Develop Design for New Stanford University Imaging Center
7. Stanford researchers find a quicker, cheaper way to sort isotopes
8. Eiger BioPharmaceuticals Acquires Exclusive License to Novel Hepatitis C Virus (HCV) Technology From Stanford University
9. LASIK Expert Edward Manche, M.D., of the Stanford Eye Laser Center Joins Top Surgeons Listed at the Trusted LASIK Surgeons Directory
10. New technique reinforces immune cells that seek and destroy cancer, says Stanford researcher
11. Stanford scientists develop new way to grow adult stem cells in culture
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Stanford researchers use river water and salty ocean water to generate electricity
(Date:9/23/2014)... (PRWEB) September 23, 2014 Texas Fertility ... clinic in South Austin, expanding a Central Texas footprint ... San Antonio. The satellite office for the region’s most ... options to the South Austin, Buda, Kyle and San ... and affordable fertility treatment directly to individuals and couples ...
(Date:9/23/2014)... Albany, New York (PRWEB) September 23, 2014 ... advocates from around the globe will convene ... 11th International Conference, to be held October ... latest in evidence-based research and practice in ... includes physicians, scientists, researchers, nurses, psychologists, nutritionists, ...
(Date:9/22/2014)... OAKLAND, Calif., September 22, 2014 Patients who were treated ... a hemorrhagic stroke were significantly more likely to survive ... published today in JAMA Neurology . This study ... that the use of cholesterol-lowering statins can improve survival ... by a constriction or obstruction of a blood vessel ...
(Date:9/22/2014)... Research and Markets ( ... "Global Biotechnology Reagents Market 2014-2018" report ... Biotechnology reagents are chemical compounds or ... detect and examine another substance to provide a ... to prepare, collect, and examine specimens from the ...
Breaking Biology Technology:Opening Doors to a Family: Texas Fertility Center Announces Newest Fertility Clinic in South Austin 2Opening Doors to a Family: Texas Fertility Center Announces Newest Fertility Clinic in South Austin 3International Medical Experts to Discuss Latest Integrative Oncology Research and Its Translation to Personalized Clinical Care at 11th International Conference of SIO 2International Medical Experts to Discuss Latest Integrative Oncology Research and Its Translation to Personalized Clinical Care at 11th International Conference of SIO 3Statin use during hospitalization for hemorrhagic stroke associated with improved survival 2Global Biotechnology Reagents Market 2014-2018: Key Vendors are Agilent, BD Biosciences, Bio-Rad, F. Hoffmann-La Roche, Sigma-Aldrich and Thermo Fisher 2Global Biotechnology Reagents Market 2014-2018: Key Vendors are Agilent, BD Biosciences, Bio-Rad, F. Hoffmann-La Roche, Sigma-Aldrich and Thermo Fisher 3
... coffee chain Stone Creek Coffee went about ... tool to enhance customer relationships: the blog. , ,According ... the blog can bring Stone Creek Coffee an ability ... releases or other traditional forms of communications. The company ...
... of a paper machine is something to hear. The spray of pulp ... the sound of industry. , ,But it's not the only sound. , ... forward, walk down the line a bit at Stora Enso's ... and listen to the hum as it carries 33-ton reels down the ...
... Catalyst International, Inc., has appointed Michael Eleftheriou ... than 30 years of experience in the information technology ... he last served as president of its Systems Integration ... Asia, India, Mexico and the Middle East. , ,Since ...
Cached Biology Technology:Business blogs increase customer interactions 2Business blogs increase customer interactions 3Business blogs increase customer interactions 4Business blogs increase customer interactions 5Cutting-edge technology keeps papermaker rolling 2Cutting-edge technology keeps papermaker rolling 3Cutting-edge technology keeps papermaker rolling 4
(Date:9/23/2014)... consequences of removing infant chimpanzees from their mothers are ... of this type of early life experience. In a ... chimpanzees and concluded that those who were removed from ... as pets or performers are likely to show behavioral ... project, published today in the open-access journal PeerJ ...
(Date:9/22/2014)... New Haven, Conn. Yale University researchers are studying ... pulmonary fibrosis, a respiratory disease in which scars develop ... treatment uses a microRNA mimic, miR-29, which is delivered ... only blocked pulmonary fibrosis, it reversed fibrosis after ... in the journal EMBO Molecular Medicine . , ...
(Date:9/22/2014)... molecular cog in a plant,s biological clock one ... on temperature. , Transcription factors, or genetic switches, drive ... such as light, rain, soil quality, or even animals ... has isolated one, called FBH1, that reacts to temperature ... while in keeping it on a consistent track. , ...
Breaking Biology News(10 mins):Chimpanzees raised as pets or performers suffer long-term effects on their behavior 2Reversing the effects of pulmonary fibrosis 2Genetic switch regulates a plant's internal clock based on temperature 2
... been considered an exclusively human activity, but now at least ... for tomorrow. The finding also raises the intriguing possibility that, ... published today (22 February) in the journal Nature shows that ... by caching food. The birds are shown to have learned ...
... steak or chicken fillet every now and again could add ... shown for the first time that food enriched with natural ... processes of ageing. The concept has been demonstrated in worms ... human life and reduce the risk of cancer and other ...
... a visual display "shout" to get their point across, UC ... of their territory by sitting up on a tree trunk, ... throat pouch. They can spot a rival lizard up to ... UC Davis who is working with Judy Stamps, professor of ...
Cached Biology News:Birds found to plan for the future 2Meat and two neutrons -- the key to a longer life 2
... an aqueous solution that contains a purified ... a PBS buffer (phosphate buffered saline), pH ... not contain a preservative. StabilCoat Immunoassay ... dried protein components in immunoassays and can ...
...
... DeCypher combines enterprise-scale sequence analysis software with the ... analyses. With DeCypher, you can perform searches like ... vs NCBI NT database in under 6 days ... genomic DNA Use HMM analysis to ...
... microplate readers combines reagent dispensing with fluorescence, ... easy-to-use platform for the complete range of ... and adaptability of the Infinite 200 series ... monochromator (M200) or filter (F200) system and ...
Biology Products: