Is nickel hydroxide charging only skin-deep?
File(s)
Accepted version
Author(s)
Hadden, Joseph HL
Ryan, Mary P
Riley, D Jason
Type
Journal Article
Abstract
The depth of charging in Ni(OH)2-coated electrodes treated with paraffin wax to remove porosity has been investigated using time-of-flight secondary-ion mass spectrometry after charging and discharging in deuterated solvent at pH 14. The proportion of deuterium uptake was found to be dependent on the number of charge/discharge cycles, showing that the measured deuterium signal was indeed dependent on the electrochemical redox activity of the sample. Sputter craters were characterized using atomic force microscopy to find the sputter rate. This then allowed the maximum depth of charging to be found to be approximately 20 nm. This confirmed a surface “skin” in which charging occurs with the rest of the bulk inactive.
Date Issued
2020-03-23
Date Acceptance
2020-02-28
Citation
ACS Applied Energy Materials, 2020, 3 (3), pp.2803-2810
ISSN
2574-0962
Publisher
American Chemical Society
Start Page
2803
End Page
2810
Journal / Book Title
ACS Applied Energy Materials
Volume
3
Issue
3
Copyright Statement
© 2020 American Chemical Society.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000526598300081&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Energy & Fuels
Materials Science, Multidisciplinary
Chemistry
Materials Science
electrochemical energy storage
batteries
supercapacitors
nickel hydroxide
nanoparticle
cyclic voltammetry
ToF-SIMS
HIGH-ENERGY SUPERCAPACITORS
LITHIUM
PERFORMANCE
ELECTRODEPOSITION
BATTERIES
STORAGE
FILMS
Publication Status
Published
Date Publish Online
2020-02-28