. 24/7 Space News .
ENERGY TECH
Traditional eutectic alloy brings new hope for high energy density metal-O2 batteries
by Staff Writers
Beijing, China (SPX) Nov 15, 2018

a) Comparison of oxidation and corrosion resistance of Li-Na eutectic alloy and Na metal. SEM images for Li-Na alloy b), and Na c) electrodes after five stripping/plating cycles. d) Voltage profiles for symmetric metal batteries. Cycling e), and rate f) performance of metal-O2 batteries with and without catalysts

Current lithium-ion intercalation technology, even when fully developed, is difficult to satisfy society's increasing demand of high-energy-density power sources for electric vehicles and electronics. Thus, non-aqueous alkali metal-oxygen (AM-O2: AM = Li, Na, etc.) batteries are promising to replace conventional lithium-ion battery due to their ultrahigh theoretical energy density.

However, AM is extremely reactive towards air and almost all nonaqueous electrolytes, resulting in significant parasitic reactions. Furthermore, uncontrollable Li or Na metal plating/stripping, generally emerging as dendrites, easily induces cells short circuit accompanying by fire/explosion events, plaguing AM anodes towards practical applications. Therefore, to achieve a safe and stable AM-O2 cell, it is important to solve the dendrite coupled with oxidation/corrosion issues of AM anode.

Recently, a research team led by ZHANG Xinbo from the Changchun Institute of Applied Chemistry (CIAC), Chinese Academy of Sciences, YAN Junmin from Jilin University, ZHANG Yu from Beihang University Beijing developed a long-life AM-O2 battery using Li-Na eutectic alloy as novel metal anode for the first time. Their findings were published in Nature Chemistry.

They found that Li and Na of Li-Na alloy exhibited similar reaction activities and therefore both could be employed as active components in batteries without sacrificing the specific capacity compared with other alloys (e.g., Na-Sn alloy). In addition, alloying Li and Na improved the corrosion resistance of single metal against O2 and electrolyte and suppressed the metal dendrites growth.

Importantly, in a Li-Na alloy battery, with the help of electrolyte additive, the resultant dendrite-suppressed, oxidation-resistant, and crack-free Li-Na alloy electrode endowed the newly-proposed aprotic bimetallic Li-Na alloy-O2 battery with good performances.

Furthermore, by introducing efficient O2 reduction/evolution catalysts (e.g., Co/NCF), the cycling life and rate capability of Li-Na alloy-O2 battery were significantly improved.

"We believe that this strategy can also be applied to other metal electrodes, such as Zn, Mg, Ca, Al and so on," said ZHANG.

Meanwhile, this study provides a guidance for developing other bimetal batteries such as bimetal ion batteries and bimetal-S batteries. These batteries possess new chemistries, exhibit much better electrochemical performance than mono-metal batteries, and adopt collaborative methods to release the great potential of alkali metal anode.

Research paper


Related Links
Chinese Academy of Sciences Headquarters
Powering The World in the 21st Century at Energy-Daily.com


Thanks for being there;
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 Monthly Supporter
$5+ Billed Monthly


paypal only
SpaceDaily Contributor
$5 Billed Once


credit card or paypal


ENERGY TECH
Materials scientist creates fabric alternative to batteries for wearable devices
Amherst MA (SPX) Nov 12, 2018
A major factor holding back development of wearable biosensors for health monitoring is the lack of a lightweight, long-lasting power supply. Now scientists at the University of Massachusetts Amherst led by materials chemist Trisha L. Andrew report that they have developed a method for making a charge-storing system that is easily integrated into clothing for "embroidering a charge-storing pattern onto any garment." As Andrew explains, "Batteries or other kinds of charge storage are still the limi ... read more

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
NASA looks to university researchers for innovative space tech solutions

Computer on Russian segment of ISS rebooted after glitch

From Quantum Optics to Increased Risk Posture: Student Innovations at NASA

'Dust up' on International Space Station hints at sources of structure

ENERGY TECH
Embry-Riddle, Florida Tech Collaborate on Spaceflight Research

Russia plans to carry out 17 space launches in 2018

Simulating hypersonic flow transitions from smooth to turbulent

Fregat Upper Stage Separates From Soyuz Carrier Bringing Satellite to Orbit

ENERGY TECH
The Mars InSight Landing Site Is Just Plain Perfect

Five Months Since We Received A Signal From Opportunity

Evidence of outburst flooding indicates plentiful water on early Mars

Curiosity on the move again

ENERGY TECH
China unveils new 'Heavenly Palace' space station as ISS days numbered

China's space programs open up to world

China's commercial aerospace companies flourishing

China launches Centispace-1-s1 satellite

ENERGY TECH
Telstar 18 VANTAGE satellite now operational over Asia Pacific

How Max Polyakov from Zaporozhie develops the Ukrainian space industry

SpaceFund launches the world's first space security token to fund the opening of the high frontier

ESA on the way to Space19+ and beyond

ENERGY TECH
Thermal testing of the magnetometer boom

Flying focus: Controlling lasers through time and space

A two-atom quantum duet

Flow units: Dynamic defects in metallic glasses

ENERGY TECH
Laser tech could be fashioned into Earth's 'porch light' to attract alien astronomers

Laboratory experiments probe the formation of stars and planets

NASA retires Kepler Space Telescope, passes planet-hunting torch

Rocky and habitable - sizing up a galaxy of planets

ENERGY TECH
SwRI team makes breakthroughs studying Pluto orbiter mission

ALMA maps temperature of Jupiter's icy moon Europa

NASA's Juno Mission Detects Jupiter Wave Trains

WorldWide Telescope looks ahead to New Horizons' Ultima Thule glyby









The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - 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. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us.