A high-performance and durable direct NH3 tubular protonic ceramic fuel cell integrated with an internal catalyst layer

Yuxin Pan, Hua Zhang, Kang Xu, Yucun Zhou, Bote Zhao, Wei Yuan, Kotaro Sasaki, YongMan Choi*, Yu Chen*, Meilin Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Nickel-based cermet anode-supported protonic ceramic fuel cells (PCFCs) show great potential for direct utilization of ammonia. However, the insufficient activity of anode and the deterioration of anode activity/durability caused by the undesired interaction between nickel and ammonia greatly limit the application. Here, we report tubular PCFCs embedded with a catalytic iron layer. Such cells show peak power densities of 1.507 W cm-2 and 1.078 W cm-2 at 700 °C when using H2 and NH3 as fuel, respectively, which are the highest tubular PCFC performance so far ever reported. In addition, the stability of cells with the catalyst layer has been dramatically enhanced when compared with that of cells without the catalyst layer. The enhancement of activity and durability is attributed to the catalytic activity of iron for ammonia decomposition, through which the direct contact between nickel and ammonia has been minimized and the anode structure has therefore been protected.

Original languageEnglish
Article number121071
Pages (from-to)1-9
Number of pages9
JournalApplied Catalysis B: Environmental
Volume306
DOIs
StatePublished - 5 Jun 2022

Keywords

  • Protonic ceramic fuel cells
  • Tubular cells
  • Ammonia fuel
  • Catalytic layer

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