Issue 19, 2004
From the journal:

Dalton Transactions

Transport numbers from hydrogen concentration cells over different oxides under oxidising and reducing conditions†

Marius Widerøe,*a   Nadezhda Kochetovab  and  Truls Norbya  

* Corresponding authors

a Centre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Gaustadalleen 21, NO—0349 Oslo, Norway

b Department of Chemistry, Urals State University, 620083 Yekaterinburg, Russia
E-mail: muw@kjemi.uio.no

Abstract

Partial hydrogen ion conductivity in acceptor doped CaTiO3, BaCeO3 and ZrO2 and nominally undoped BaTiO3 and TiO2 has been investigated by transport number measurements using the hydrogen concentration cell/EMF method in wet atmospheres as a function of pO2 (10−20–1 atm) at 800 or 1000 °C. All oxides investigated, except ZrO2, show minor proton conductivity in oxidising atmospheres. Earlier indications of apparent negative charge transport by hydrogen under reducing conditions and high temperatures in SrTiO3 samples have been reproduced for all the investigated oxides including ZrO2.

Graphical abstract: Transport numbers from hydrogen concentration cells over different oxides under oxidising and reducing conditions

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Article information

DOI
https://doi.org/10.1039/B402824D
Article type
Paper
Submitted
24 Feb 2004
Accepted
10 May 2004
First published
23 Jul 2004

Dalton Trans., 2004, 3147-3151

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Transport numbers from hydrogen concentration cells over different oxides under oxidising and reducing conditions

M. Widerøe, N. Kochetova and T. Norby, Dalton Trans., 2004, 3147 DOI: 10.1039/B402824D

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