A highly active Ni/Ce0.8Sm0.2O1.9 anode catalyst with a three-dimensionally ordered macroporous structure for solid oxide fuel cells

Tian Gan, Xinqiang Fan, Ye Liu, Chengyu Wang, Haoran Mei, Lijun Fan, Nianjun Hou, Yicheng Zhao*, Yongdan Li

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

Abstrakti

Ni/Ce0.8Sm0.2O1.9 (SDC) with a three-dimensionally ordered macroporous (3DOM) structure is prepared with poly(methyl methacrylate) as the template and characterized using X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, H2 temperature-programmed reduction, X-ray photoelectron spectroscopy and ultraviolet Raman spectroscopy. Lattice oxygen in 3DOM SDC shows a higher activity than that in hydrothermally synthesized bulk SDC. 3DOM SDC also exhibits a stronger interaction with Ni compared to bulk SDC, which facilitates the release of lattice oxygen and the formation of oxygen vacancies in SDC in a reducing atmosphere. Therefore, Ni/3DOM SDC shows a much higher catalytic activity for electrochemical oxidation than Ni/bulk SDC as the anode material of solid oxide fuel cells. With Ni/3DOM SDC as the anode, a cell supported by a 500 μm-thick SDC-carbonate composite electrolyte layer exhibits maximum power densities (Pmax) of 1.28 and 1.63 W cm-2 at 700 °C with H2 and methanol as fuels, respectively, more than twice the Pmax of a similar cell with a Ni/bulk SDC anode. The Ni/3DOM SDC anode also shows a high resistance to coking.

AlkuperäiskieliEnglanti
Sivut7792-7800
Sivumäärä9
JulkaisuJournal of Materials Chemistry A
Vuosikerta8
Numero16
DOI - pysyväislinkit
TilaJulkaistu - 28 huhtikuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki Sukella tutkimusaiheisiin 'A highly active Ni/Ce<sub>0.8</sub>Sm<sub>0.2</sub>O<sub>1.9</sub> anode catalyst with a three-dimensionally ordered macroporous structure for solid oxide fuel cells'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

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