by Staff Writers
Los Angeles CA (SPX) Oct 16, 2017
Scientists have long searched for the next generation of materials that can catalyze a revolution in renewable energy harvesting and storage. One candidate appears to be metal-organic frameworks. Scientists have used these very small, flexible, ultra-thin, super-porous crystalline structures to do everything from capturing and converting carbon into fuels to storing hydrogen and other gases. Their biggest drawback has been their lack of conductivity.
Now, according to USC scientists, it turns out that metal-organic frameworks can conduct electricity in the same way metals do. This opens the door for metal organic-frameworks to one day efficiently store renewable energy at a very large, almost unthinkable scale.
"For the first time ever, we have demonstrated a metal-organic framework that exhibits conductivity like that of a metal. The natural porosity of the metal-organic framework makes it ideal for reducing the mass of material, allowing for lighter, more compact devices" said Brent Melot, assistant professor of chemistry at the USC Dornsife College of Letters, Arts and Sciences.
"Metallic conductivity in tandem with other catalytic properties would add to its potential for renewable energy production and storage" said Smaranda Marinescu, assistant professor of chemistry at the USC Dornsife College.
An emerging catalyst for long-term renewable energy storage
Solar has not yet been maximized as an energy source. The earth receives more energy from one hour of sunlight than is consumed in one year by the entire planet, but there is currently no way to use this energy because there is no way to conserve all of it. This intermittency is intrinsic to nearly all renewable power sources, making it impossible to harvest and store energy unless, say, the sun is shining or the wind is blowing.
If scientists and industries could one day regularly reproduce the capability demonstrated by Marinescu, it would go a long way to reducing intermittency, allowing us to finally make solar energy an enduring and more permanent resource.
Metal or semiconductor: why not both?
As temperature goes down, metals become more conductive. Conversely, as the temperature goes up, it is semiconductors that become more conductive.
In the experiments run by Marinescu's group, they used a cobalt-based metal-organic framework that mimicked the conductivity of both a metal and semiconductor at different temperatures. The metal-organic framework designed by the scientists demonstrated its greatest conductivity at both very low and very high temperatures.
Their findings were published July 13 in the Journal of the American Chemical Society.
Washington (UPI) Oct 10, 2017
Researchers at Stanford University have built a sodium-based battery that can store just as much energy as a lithium-ion battery, but at a significantly reduced cost. Lithium-ion batteries have been the standard bearer for the last 25 years. But lithium is becoming increasingly scarce and mining costs are steep. Sodium - which also hosts ions that can be moved from a cathode to ... read more
University of Southern California
Powering The World in the 21st Century at Energy-Daily.com
|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|