• Title/Summary/Keyword: Fuel Cells

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Electrochemical Evaluation of Mixed Ionic and Electronic Conductor-Proton Conducting Oxide Composite Cathode for Protonic Ceramic Fuel Cells (혼합 이온 및 전자 전도체-프로톤 전도성 전해질 복합 공기극을 적용한 프로토닉 세라믹 연료전지의 전기화학적 성능 평가)

  • HYEONGSIK SHIN;JINWOO LEE;SIHYUK CHOI
    • Transactions of the Korean hydrogen and new energy society
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    • v.35 no.1
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    • pp.48-55
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    • 2024

  • The electrochemically active site of mixed ionic and electronic conductor (MIEC) as a cathode material is restricted to the triple phase boundary in protonic ceramic fuel cells (PCFCs) due to the insufficient of proton-conducting properties of MIEC. This study primarily focused on expanding the electrochemically active site by La0.6Sr0.4Co0.2Fe0.8O3-δ(LSCF6428)-BaZr0.4Ce0.4Y0.1Yb0.1O3-δ (BZCYYb4411) composite cathode. The electrochemical properties of the composite cathode were evaluated using anode-supported PCFC single cells. In comparison to the LSCF6428 cathode, the peak power density of the LSCF6428-BZCYYb4411 composite cathode is much enhanced by the reduction in both ohmic and non-ohmic resistance, possibly due to the increased electrochemically active site.

  • https://doi.org/10.7316/JHNE.2024.35.1.48 인용 PDF