Effect of impurities on structural and electrochemical properties of the Ni-YSZ interface.
Författare
Summary, in English
The changes in interface structure and chemical composition of a 99.995% pure nickel/yttria-stabilised zirconia (YSZ) interface were examined after heat treatment at 1000 °C in 97% H2/3% H2O with and without polarisation. Impedance spectroscopy was used for electrochemical characterisation. The results were compared to earlier investigations of a less pure nickel/YSZ interface.
The pure interface developed different structures depending on whether or not the samples were polarised. Despite the purity of the nickel, impurities were found in the interfacial region. The pure electrodes/interfaces showed area specific polarisation resistances 10 times lower than the impure interfaces.
The pure interface developed different structures depending on whether or not the samples were polarised. Despite the purity of the nickel, impurities were found in the interfacial region. The pure electrodes/interfaces showed area specific polarisation resistances 10 times lower than the impure interfaces.
Avdelning/ar
Publiceringsår
2003
Språk
Engelska
Sidor
27-37
Publikation/Tidskrift/Serie
Solid State Ionics
Volym
160
Issue
1-2
Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Chemical Sciences
Nyckelord
- Foreign phases
- Polarisation resistance
- Ni–YSZ interface
- SOFC
- Anode
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0167-2738