Featured Research

from universities, journals, and other organizations

Inorganic Chameleon Show Promise In Energy And Nano Research

Date:
March 25, 2009
Source:
Vetenskapsrådet (The Swedish Research Council)
Summary:
The multifaceted material perovskite could be of benefit in three key applications: fuel cells, gas separation prior to the storage of carbon dioxide and nanocomponents in electronic products. Consequently, the material can be of significance to both energy systems of the future and the development of nanoelectronics, according to new research.

A new PhD thesis from Chalmers shows that the multifaceted material perovskite could be of benefit in three key applications: fuel cells, gas separation prior to the storage of carbon dioxide and nanocomponents in electronic products. Consequently, the material can be of significance to both energy systems of the future and the development of nanoelectronics.

Perovskite is a structure type that consists of three different components: alkaline earth metals such as calcium, transition metals such as iron and negative ions, which are often oxygen. Perovskites are usually described as inorganic chameleons as they are very flexible and can exhibit different properties depending on their environment. They are easy to manufacture, and by varying the structure, new interesting functions can be created in the material.

In her recently published PhD thesis at Chalmers Annika Eriksson has studied the link between these new functions and the structure of perovskites. She has, among other things, examined a group of perovskites which have good conductive properties for both oxygen ions and electrons. These properties are sought after as cathode material in fuel cells.

Present-day fuel cells have a working temperature of 800-1,000°C. They therefore have limited areas of use and require a great deal of energy to heat up.

"One aim is to be able to reduce the working temperature to a more manageable level in the range 300-600°C," says Professor Sten Eriksson, who was the supervisor for the thesis. "We also hope that new perovskites can offer a longer lifespan and better conductive capacity for ions and electrons in fuel cells."

A supercell structure of an oxygen-deficient perovskite. The supercell structure contains voids, or holes, which make it possible for oxygen ions and/or electrons to move. In doing so, the perovskite can function as a conductor for both ions and electrons.

The fact that perovskites conduct oxygen effectively also means that they can be used in membranes for the separation of oxygen from other gases. An interesting application could be carbon dioxide storage in bedrock, a potentially very important form of technology to slow down climate changes. Before the carbon dioxide is pumped into the bedrock, other gases, including oxygen, must be removed from the gas mixture.

Annika Eriksson has also examined a group of perovskites which are multiferroic materials, also known as multifunctional materials. This means that they are spontaneously polarisable in an electric field and at the same time they have magnetic properties. Materials of this kind are important in nanoelectronics research as they can combine polarised and magnetic effects in one circuit.


Story Source:

The above story is based on materials provided by Vetenskapsrådet (The Swedish Research Council). Note: Materials may be edited for content and length.


Cite This Page:

Vetenskapsrådet (The Swedish Research Council). "Inorganic Chameleon Show Promise In Energy And Nano Research." ScienceDaily. ScienceDaily, 25 March 2009. <www.sciencedaily.com/releases/2009/03/090323161227.htm>.
Vetenskapsrådet (The Swedish Research Council). (2009, March 25). Inorganic Chameleon Show Promise In Energy And Nano Research. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2009/03/090323161227.htm
Vetenskapsrådet (The Swedish Research Council). "Inorganic Chameleon Show Promise In Energy And Nano Research." ScienceDaily. www.sciencedaily.com/releases/2009/03/090323161227.htm (accessed July 24, 2014).

Share This




More Matter & Energy News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) — 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
Powered by NewsLook.com
Boeing Ups Outlook on 52% Profit Jump

Boeing Ups Outlook on 52% Profit Jump

Reuters - Business Video Online (July 23, 2014) — Commercial aircraft deliveries rose seven percent at Boeing, prompting the aerospace company to boost full-year profit guidance- though quarterly revenues missed analyst estimates. Bobbi Rebell reports. Video provided by Reuters
Powered by NewsLook.com
Europe's Car Market on the Rebound?

Europe's Car Market on the Rebound?

Reuters - Business Video Online (July 23, 2014) — Daimler kicks off a round of second-quarter earnings results from Europe's top carmakers with a healthy set of numbers - prompting hopes that stronger sales in Europe will counter weakness in emerging markets. Hayley Platt reports. Video provided by Reuters
Powered by NewsLook.com
9/11 Commission Members Warn of Terror "fatigue" Among American Public

9/11 Commission Members Warn of Terror "fatigue" Among American Public

Reuters - US Online Video (July 22, 2014) — Ten years after releasing its initial report, members of the 9/11 Commission warn of the "waning sense of urgency" in combating terrorists attacks. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins