Subscribe to our free daily newsletters
  Energy News  




Subscribe to our free daily newsletters



ENERGY TECH
Electricity generated with water, salt and an ultra thin membrane
by Brooks Hays
Lausanne, Switzerland (UPI) Jul 13, 2016


disclaimer: image is for illustration purposes only

The simple scientific phenomenon known as osmosis has renewable energy researchers quite excited.

A newly devised osmotic power generation system has produced record-setting yields. The system relies on water, salt and an ultra thin membrane -- three atoms thin, to be exact.

More specifically, the system features two liquid-holding compartments separated by a membrane made of molybdenum disulfide. In one container is saltwater and in the other is freshwater.

The membrane allows saltwater ions to pass through its nanopores until the salt concentrations in each container reach equalibrium. Ions are atoms with an electrical charge. As the salt ions pass through nanopores, an electrode captures the electric charge.

The membrane lets only positively charged ions pass through its nanoholes, which slowly turns the device into a dipole, with all the positively charged ions in one container and negatively charged ions in the other. The separation triggers a flow of electricity as the ions pass through the membrane.

"We had to first fabricate and then investigate the optimal size of the nanopore. If it's too big, negative ions can pass through and the resulting voltage would be too low," lead researcher Jiandong Feng, a scientist at the EPFL Laboratory of Nanoscale Biology, said in a news release. "If it's too small, not enough ions can pass through and the current would be too weak."

The key to device's never-before-seen electricity yields is its material and thickness. The thinner the membrane, the higher the voltage created by the ion flow and dipole separation.

"This is the first time a two-dimensional material has been used for this type of application," said Aleksandra Radenovic, the laboratory's head scientist.

The next challenge for researchers is to find a way to scale up the osmotic power generation system while maintaining the uniformity of the membrane's nanopores.

EPFL scientists detailed their latest efforts in the journal Nature.


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

.


Related Links
Powering The World in the 21st Century at Energy-Daily.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

Previous Report
ENERGY TECH
New ferromagnetic superconductors
Beijing, China (SPX) Jul 11, 2016
Superconductivity (SC) and ferromagnetism (FM) are mutually antagonistic collective phenomena in solids. Macroscopically, a superconductor expels magnetic fluxes from its interior (so-called Meissner state) below the superconducting critical temperature TSC. By contrast, a ferromagnet magnetizes itself (for a single magnetic domain) spontaneously below the ferromagnetic transition temperature TF ... read more


ENERGY TECH
Sweden's 100 percent carbon-free emissions challenge

Norway MPs vote to go carbon neutral by 2030

Algorithm could help detect and reduce power grid faults

It pays to increase energy consumption

ENERGY TECH
Atomic bits despite zero-point energy

New ferromagnetic superconductors

3-D paper-based microbial fuel cell operating under continuous flow condition

Bangladesh coal plant threatens World Heritage mangrove: petition

ENERGY TECH
France's EDF buys Chinese wind energy firm

Scotland commits $26M for low-carbon economy

More wind power added to French grid

How China can ramp up wind power

ENERGY TECH
Flipping crystals improves solarcell performance

Discovery could dramatically boost efficiency of perovskite solar cells

Solar nano-grids light up homes and businesses in Kenya

Scientists explain unusual and effective features in perovskite

ENERGY TECH
Indian NPP Second Unit May Start Commercial Operations in November

Reactor fuels Russia bid for post-Fukushima atomic lead

Germany may wait 100 years for nuclear waste storage site

Russian floating nuclear power station undergoes mooring tests

ENERGY TECH
One reaction, two results, zero waste

Neural networks to obtain synthetic petroleum

From climate killer to fuels and polymers

Study shows trees with altered lignin are better for biofuels

ENERGY TECH
Dutch Radio Antenna to Depart for Moon on Chinese Mission

Chinese Space Garbageman is not a Weapon

China to launch its largest carrier rocket later this year

China committed to peaceful use of outer space

ENERGY TECH
California droughts caused mainly by changes in wind, not moisture

Climate study finds human fingerprint in Northern Hemisphere greening

Britain's commitment firm on climate: secretary

Controlled Colorado River flooding released stored greenhouse gases




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement