Issue 17, 2018

A high-performance SDC-infiltrated nanoporous silver cathode with superior thermal stability for low temperature solid oxide fuel cells

Abstract

Superior thermal stability of a nanoporous silver thin film cathode is enabled by covering the silver nanoparticles with a thin layer of samarium-doped ceria (SDC). A simple solution infiltration process followed by post heat treatment at 500 °C is applied to coat a thin SDC layer over inkjet-printed silver nanoparticle thin films to physically confine the silver nanoparticles to prevent thermal agglomeration. The electrochemical performance of the SDC-infiltrated silver cathode also surpasses that of both a non-infiltrated silver cathode and a typical sputtered nanoporous platinum cathode. A 60 hour fuel cell current stability test using the SDC-infiltrated silver cathode shows only 12.4% current degradation, which is significantly lower than 73.6% degradation from the fuel cell using a non-infiltrated silver cathode.

Graphical abstract: A high-performance SDC-infiltrated nanoporous silver cathode with superior thermal stability for low temperature solid oxide fuel cells

Article information

Article type
Communication
Submitted
02 Feb 2018
Accepted
25 Mar 2018
First published
26 Mar 2018

J. Mater. Chem. A, 2018,6, 7357-7363

A high-performance SDC-infiltrated nanoporous silver cathode with superior thermal stability for low temperature solid oxide fuel cells

T. Lee, L. Fan, C. Yu, F. E. Wiria and P. Su, J. Mater. Chem. A, 2018, 6, 7357 DOI: 10.1039/C8TA01104D

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