In situ Atomic Force Microscopy Imaging of Electroprecipitated Nickel Hydrous Oxide Films in Alkaline Electrolytes

In situ atomic force microscopy images of nickel hydrous oxide films electrodeposited on the basal plane of highly oriented pyrolytic graphite in alkaline electrolytes have shown that a stepwise oxidation leads to irreversible formation of wide crevices throughout the material. Upon subsequent stepw...

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Bibliographic Details
Published inLangmuir Vol. 10; no. 11; pp. 3933 - 3936
Main Authors Chen, Rong-rong, Mo, Yibo, Scherson, Daniel A
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 01.11.1994
Subjects
250903 > Energy Storage > Batteries > Materials, Components, & Auxiliaries
30 DIRECT ENERGY CONVERSION
300503 > Fuel Cells > Materials, Components, & Auxiliaries
400400 > Electrochemistry
Adsorption
CARBON
CHALCOGENIDES
CHEMICAL REACTIONS
Chemistry
DEPOSITION
DIRECT ENERGY CONVERTERS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
Electrochemistry
ELECTRODEPOSITION
ELECTROLYSIS
ELECTROLYTES
ELEMENTAL MINERALS
ELEMENTS
ENERGY STORAGE
Exact sciences and technology
FUEL CELLS
General and physical chemistry
GRAPHITE
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
LYSIS
MICROSCOPY
MINERALS
NICKEL COMPOUNDS
NICKEL OXIDES
NONMETALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REDUCTION
STRESSES
Study of interfaces
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS 400201 > Chemical & Physicochemical Properties
Inorganic adsorbate
Electrodes
Alkaline electrolyte
Atomic force microscopy
Liquid solid adsorption
Transition metal Compounds
Nickel Hydroxides
Inorganic adsorbent
Experimental study
Nickel Hydroxides oxides
Pyrographite
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Summary:In situ atomic force microscopy images of nickel hydrous oxide films electrodeposited on the basal plane of highly oriented pyrolytic graphite in alkaline electrolytes have shown that a stepwise oxidation leads to irreversible formation of wide crevices throughout the material. Upon subsequent stepwise reduction, the gaps close leaving a hairline type crack which follows the profile of the crevice. These potential induced structural rearrangements have been attributed to stresses induced by differences in the densities of the nickel hydrous oxide in the two oxidation states. 9 refs., 5 figs.
Bibliography:istex:86DEF1FC57B271FF22DACDAC083FBE35AF916E32
ark:/67375/TPS-ZPZHJ3GT-1
None
ISSN:0743-7463
1520-5827
DOI:10.1021/la00023a005