A high-performance SDC-infiltrated nanoporous silver cathode with superior thermal stability for low temperature solid oxide fuel cells
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-printe...
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Main Authors: | , , , , |
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Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2020
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Subjects: | |
Online Access: | https://hdl.handle.net/10356/140771 |
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Institution: | Nanyang Technological University |
Language: | English |
Summary: | 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. |
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