A Solid Electrolyte for Zinc-Air Batteries

  • Author: Lisa-Marie Rauschendorfer
  • Published: 11 June 2016
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Advanced Energy Materials/Wiley-VCH
thumbnail image: A Solid Electrolyte for Zinc-Air Batteries

Metal-air rechargeable batteries are half-open systems that consume oxygen from air. Especially zinc-air batteries have attracted attention, as they are environmentally friendly and safe. Unfortunately, zinc-air batteries still mainly rely on aqueous electrolytes, since alternative solid graphene oxide (GO) electrolyte membranes are mechanically very unstable.


Zhongwei Chen, University of Waterloo, Ontario, Canada, and colleagues have developed a robust solid electrolyte for flexible zinc-air batteries using a laminated nanocellulose/GO membrane, functionalized with highly hydroxide-conductive quaternary ammonium (QA) groups. Functionalization was accomplished by the adsorbtion of dimethyloctadecyl [3-(trimethoxysilyl)-porpyl] ammonium chloride (DMAOP) to the various oxygen groups of cellulose and GO. The resulting QA-functionalized GO nanosheets (QAFGO) and cellulose fibers (QAFC) were vacuum filtered to form a laminate-structured membrane (QAFCGO, pictured).


The hydroxide-conducting QAFCGO was successfully applied in powering an electric fan, even under mechanical stress, such as bending the flexible membrane at an angle of 120°. Analysis of the hydroxide transport in QAFCGO revealed a complex process, where two different molecular hydroxide transport mechanisms, a Grotthuss proton-hopping mechanism and a vehicle mechanism involving water, take place in the two different layers simultaneously.


 

Article Views: 2179

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


Magazine of Chemistry Europe (16 European Chemical Societies)published by Wiley-VCH