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- W4298140691 abstract "Ammonia electrosynthesis was conducted using proton-conducting ceramic electrolysis cells in a single chamber supplied with mixed N 2 and H 2 , to determine the active electrode regions for the electrochemical promotion of catalysis (EPOC). Cells with Fe-based cathodes of either a metal, cermet, or mixed ionic-electronic conductor (MIEC) structure were compared, to assess whether the triple-phase boundaries (TPBs) or the Fe catalyst surfaces are more effective for ammonia synthesis. Upon cathodic polarization at 600˚C, high ammonia formation rates on the order of 10 −8 mol s −1 cm −2 were obtained with both Fe metal and Fe-BaZr 0.8 Y 0.2 O 3 (Fe-BZY) cermet cathodes. Comparisons of the three electrode structures suggest that when H 2 is also supplied to the cathode, ammonia formation occurring on bulk Fe surfaces leads to a greater promotional effect than that at TPBs. There also remains a possibility that the interfacial layer formed at the cathode-electrolyte interface due to cation interdiffusion aids ammonia formation." @default.
- W4298140691 created "2022-10-01" @default.
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- W4298140691 date "2022-09-30" @default.
- W4298140691 modified "2023-09-27" @default.
- W4298140691 title "Iron-Based Electrode Structures for Ammonia Electrosynthesis Cells with Proton-Conducting Ceramic Electrolytes" @default.
- W4298140691 doi "https://doi.org/10.1149/10913.0003ecst" @default.
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