Subscribe free to our newsletters via your
. 24/7 Space News .




Subscribe free to our newsletters via your




















ENERGY TECH
TU Graz researchers show that enzyme function inhibits battery ageing
by Staff Writers
Graz, Austria (SPX) Mar 21, 2017


Stefan Freunberger, beneficiary of an ERC Grant at TU Graz, investigates ageing processes in non-aqueous batteries. Image courtesy Lunghammer - TU Graz.

It has been known in biology for a long time that the excited oxygen molecule singlet oxygen is the main cause of ageing in cells. To counter this, nature uses an enzyme called superoxide dismutase to eliminate superoxide as a free radical.

Superoxide also occurs in cell respiration for energy production and is the preliminary stage and thus source of singlet oxygen. TU Graz's Stefan Freunberger has now stumbled upon astonishing parallels of oxygen chemistry in battery systems.

He investigates ageing processes in non-aqueous batteries, such as oxygen batteries - in other words, battery systems in which oxygen reacts with lithium, sodium magnesium, for example, thus releasing energy. The energy density of these next-generation batteries is considerably higher than in today's lithium-ion batteries, but their fast ageing still makes them currently unusable.

"I've realised for a long time that superoxide cannot be the single cause of ageing, as previously assumed. Singlet oxygen is quite well known because it's so reactive. But nobody had checked to see if it occurs in batteries. Not least because there weren't any methods to detect it there," describes Freunberger.

In the current issue of Nature Energy, Freunberger describes the detection methods which have been developed and shows that singlet oxygen really is mainly responsible for ageing in non-aqueous oxygen batteries.

Enzyme function for batteries
"From the point of view of research, this is a gold mine. It shows that in all electrochemical activities in which oxygen is involved - and this is usually the case in battery chemistry - singlet oxygen can be of importance. The methods used to detect singlet oxygen can also be applied in other areas," says Stefan Freunberger.

On top of the problem recognition and methodology development, the article in Nature Energy also provides an initial approach to how the storage cell can protect itself from the reactive oxygen species.

"In essence, the battery needs the function of the enzyme superoxide dismutase. We were able to identify a class of molecules which can fulfil this function. There has to be a suitable way of getting the "enzyme" into the battery system - either through the electrolyte itself or by means of an additive which dissolves in the electrolyte.

"This is an initial approach that works but it is definitely not the optimum way. Behind this big door which we pushed open, there is a lot of work to do," says Freunberger.

Singlet Oxygen Generation as a Major Cause for Parasitic Reactions during Cycling of Aprotic Lithium-Oxygen Batteries. Nature Energy. DOI: 10.1038/nenergy.2017.36.

ENERGY TECH
Headphone batteries explode on flight to Australia
Sydney (AFP) March 15, 2017
A woman whose headphones caught fire on a plane suffered burns to her face and hands, Australian officials said Wednesday as they warned about the dangers of battery-operated devices in-flight. The passenger was listening to music on her own battery-operated headphones as she dozed about two hours into the trip from Beijing to Melbourne on February 19 when there was a loud explosion. "As ... read more

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

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

Comment using your Disqus, Facebook, Google or Twitter login.

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

ENERGY TECH
Russia to Build First New-Generation 'Federation' Spacecraft by 2021

Two more spacewalks for Thomas Pesquet

Trump's budget would cut NASA asteroid mission, earth science

Aiming Higher: High School Students Build Flight Hardware Bound for Space

ENERGY TECH
SpaceX cargo ship returns to Earth

N. Korea's Kim hails engine test as 'new birth' for rocket industry

SpaceX launches EchoStar XXIII comms satellite into orbit

US BE-4 Rocket Engines to Replace Russian RD-180 on Atlas Carrier Rockets

ENERGY TECH
Does Mars Have Rings? Not Right Now, But Maybe One Day

ExoMars: science checkout completed and aerobraking begins

Mars Rover Tests Driving, Drilling and Detecting Life in Chile's High Desert

Opportunity Driving South to Gully

ENERGY TECH
China Develops Spaceship Capable of Moon Landing

Long March-7 Y2 ready for launch of China's first cargo spacecraft

China Seeks Space Rockets Launched from Airplanes

Riding an asteroid: China's next space goal

ENERGY TECH
Globalsat Sky and Space Global sign MoU for testing and offering satellite service in Latin America

A Consolidated Intelsat and OneWeb

UK funding space entrepreneurs

Kymeta and Intelsat announce new service to revolutionize how satellite services are purchased

ENERGY TECH
Why water splashes: New theory reveals secrets

Pulverizing electronic waste is green, clean - and cold

Molecular 'treasure maps' to help discover new materials

Researchers use light to remotely control curvature of plastics

ENERGY TECH
Fossil or inorganic structure? Scientists dig into early life forms

Gigantic Jupiter-type planet reveals insights into how planets evolve

Operation of ancient biological clock uncovered

Visualizing debris disk "roller derby" to understand planetary system evolution

ENERGY TECH
ESA's Jupiter mission moves off the drawing board

NASA Mission Named 'Europa Clipper'

Juno Captures Jupiter Cloudscape in High Resolution

Juno to remain in current orbit at Jupiter




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