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:7/10/2014)... July 10, 2014 Research and Markets ... the "International Photonic Integrated Circuit (Monolithic Integration, ... 2019" report to their offering. ... concept of photonic integration traces its roots in ... promise of photonic integration went unexplored and unfulfilled ...
(Date:7/10/2014)... to the International Atomic Energy Agency (IAEA) the ... acquiring sufficient quantities of plutonium or highly enriched ... device. The IAEA also notes that most cases ... which can be challenging to detect with most ... appearing this week in the Journal of ...
(Date:7/10/2014)... Using microscopic polymer light resonators that expand in ... Quantum Photonics Laboratory have developed new optical sensors ... Optical sensors are ideal for detecting trace gas ... lightweight nature, and immunity to electromagnetic interference. , ... before, the MIT team conceived an extremely sensitive, ...
(Date:7/10/2014)... Understanding the basis of psychiatric disorders has been extremely ... increase risk but are insufficient to cause disease. Now ... Cell Press journal Cell Stem Cell describe ... genetic risks interact with other risk factors or environmental ... Their research pinpoints a genetic variant that may predispose ...
Breaking Biology Technology:International Photonic Integrated Circuit (Monolithic Integration, Hybrid Integration, Module Integration) Market - Forecasts to 2019 2Sensitive detection method may help impede illicit nuclear trafficking 2Swell new sensors 2New strategy could uncover genes at the root of psychiatric illnesses 2
... AMDL, Inc. (Amex:,ADL), with operations in Shenzhen, ... subsidiary Jade Pharmaceutical Inc. (JPI), an international,biopharma ... and,marketing of proprietary pharmaceutical and diagnostic products, ... expansion plans to increase,annualized sales in FY2008, ...
... Nov. 20 Sangamo,BioSciences, Inc. (Nasdaq: SGMO ) ... provide an update on the progress of,Sangamo,s ZFP Therapeutic ... at 11:00 am (ET) on Wednesday, November 28,2007 at ... New York. The presentation will be webcast live ...
... FOLD ) today announced that John F. Crowley, ... at the Lazard Capital,Markets Fourth Annual Healthcare Conference in ... ET at The New York Palace Hotel. A ... available to all,interested parties through the Investors section of ...
Cached Biology Technology:AMDL Launches New JPGreen Business Strategy 2Sangamo BioSciences to Present at the Piper Jaffray Health Care Conference 2Amicus Therapeutics to Present at the Lazard Capital Markets Fourth Annual Healthcare Conference 2Amicus Therapeutics to Present at the Lazard Capital Markets Fourth Annual Healthcare Conference 3
(Date:7/13/2014)... more effective treatments for cachexia, a profound wasting of ... cancer patients, raising their risk of death, according to ... been tried to reverse the condition, which may cause ... but none have had great success. , Scientists reporting ... Nature , led by Bruce Spiegelman, PhD, demonstrated that ...
(Date:7/11/2014)... The Mills Canyon fire started near the City of ... of local resources, the fire quickly grew to over ... cause of the fire is under investigation by the ... is working with existing local resources in developing fire ... Forest Service (USFS), Washington State Department of Natural Resources, ...
(Date:7/11/2014)... Cell scientists have set a "mouse TRAP" to capture ... a recent study published in the Journal of ... a technique called TRAP to extract cellular and genetic ... by scientists at the Rockefeller Institute for Medical Research ... the protein-making machinery, or ribosomes, of the cell type ...
Breaking Biology News(10 mins):Antibody halts cancer-related wasting condition 2Antibody halts cancer-related wasting condition 3
... at Mount Sinai School of Medicine have discovered a ... and resistance to chemotherapy, and participate in tumor progression. ... tests for early cancer diagnosis, prognostic tests, and innovative ... Resistance to chemotherapy is a frequent ...
... The decision has been taken by the German government to ... The transition process is gaining impetus but much remains to ... wind energy is to be dramatically expanded not only ... still immense potential inland that remains to be tapped, such ...
... appreciate this fabric, which looks innocuous but in fact ... a microcontroller that detects warning signals emitted when the ... can be used to protect buildings, bank vaults, and ... parked overnight at truck stops are particularly vulnerable to ...
Cached Biology News:Researchers reveal a chemo-resistant cancer stem cell as cancer's 'Achilles' heel' 2More accurate wind energy forecasts 2More accurate wind energy forecasts 3A smart fabric sets off the alarm 2A smart fabric sets off the alarm 3
...
X-Gal, 100 mg. 5-Bromo-4-chloro-3-indolyl-b-d-galactoside.Histochemical substrate for b-galactosidase, used in blue/white screening.Store at -20 C. Protect from moisture. Category: Nucleotides & Enzy...
...
RayBio L Series 507: RayBio Label-based Antibody Array I (2 membranes) Class: Antibody Array Products Product Group: Antibody Array...
Biology Products: