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Characterisation and processing of aqueous LaNi0.6Fe0.4O3 Suspensions into Porous Electrode Layers for Alkaline Water Electrolysis
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Number of Authors: 42019 (English)In: Journal of the European Ceramic Society, ISSN 0955-2219, E-ISSN 1873-619X, Vol. 39, no 4, p. 1271-1278Article in journal (Refereed) Published
Abstract [en]

The colloidal properties and processing of aqueous LaNi0.6.Fe0.4O3 suspensions into electrode layers with hierarchical pore sizes has been investigated by light scattering, electron microscopy and rheology. We found that the colloidal stability of the oxide particles and the resulting microstructure of the electrode layers were similar when dispersing the particles at their intrinsic pH, or when adding polyvinylpyrrolidone. The addition of the ammonium salt of poly(methaacrylic acid) resulted in a poor colloidal stability and the concentrated suspensions became viscoelastic during processing. Addition of rice starch resulted in an increase of the porosity but the cast electrode layers cracked and delaminated.

Place, publisher, year, edition, pages
2019. Vol. 39, no 4, p. 1271-1278
Keywords [en]
Porous electrodes, Alkaline Electrolysis, Ceramic processing, Characterization of ceramic suspensions
National Category
Chemical Sciences Materials Engineering
Identifiers
URN: urn:nbn:se:su:diva-166654DOI: 10.1016/j.jeurceramsoc.2018.10.020ISI: 000457819600073OAI: oai:DiVA.org:su-166654DiVA, id: diva2:1295269
Available from: 2019-03-11 Created: 2019-03-11 Last updated: 2019-03-11Bibliographically approved

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