Pulsed laser deposition of superionic ceramic thin films: Deposition and applications in electrochemistry

Document Type

Article

Publication Date

1-1-1998

Abstract

Pulsed laser deposition (PLD) has been used to prepare two types of superionic ceramic thin films: (i) NASICON (Na superionic conductor) for a Na ion selective membrane and (ii) the mixed electronic and oxygen conductors La 1 - x Sr x MnO 3 ± δ (LSM) for the cathode in solid oxide fuel cells. NASICON thin films have good ionic conductivity with resistivities between 3 × 10 3 and 5 × 10 4 Ω cm at room temperature and they have low surface particle densities depending upon the deposition conditions. When NASICON is deposited on polymeric (Raipore) membranes frequently employed for Na selectivity, the composite membranes show a significant increase of current efficiency of 23% for the production of sodium hydroxide from sodium sulfate using electrolysis. For LSM, very smooth and dense thin films are produced by PLD with the perovskite structure after an anneal at 950°C. © 1998 Elsevier Science B.V.

Identifier

0032073101 (Scopus)

Publication Title

Applied Surface Science

External Full Text Location

https://doi.org/10.1016/S0169-4332(97)00674-0

ISSN

01694332

First Page

466

Last Page

470

Volume

127-129

Fund Ref

Natural Sciences and Engineering Research Council of Canada

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