TY - JOUR
T1 - Infiltrated Ni0.08Co0.02CeO2-x@Ni0.8Co0.2 catalysts for a finger-like anode in direct methane-fueled solid oxide fuel cells
AU - Shi, Nai
AU - Xie, Yun
AU - Yang, Yi
AU - Huan, Daoming
AU - Pan, Yang
AU - Peng, Ranran
AU - Xia, Changrong
AU - Chen, Chusheng
AU - Zhan, Zhongliang
AU - Lu, Yalin
N1 - Funding Information:
This work was financially supported by the National Key Research and Development Program of China (2017YFA0402800), the National Natural Science Foundation of China (51872276), the Fundamental Research Funds for the Central Universities (WK340000004), and the Key Program of Research and Development of Hefei Science Center CAS (2018HSC-KPRD002).
Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/2/3
Y1 - 2021/2/3
N2 - Direct utilization of methane in solid oxide fuel cells (SOFCs) is greatly impeded by the grievous carbon deposition and the much depressed catalytic activity. In this work, a promising anode, taking finger-like porous YSZ as the anode substrate and impregnated Ni0.08Co0.02Ce0.9O2-δ@Ni0.8Co0.2O as the novel catalyst, is fabricated via the phase conversion-combined tape-casting technique. This anode shows commendable mechanical strength and excellent catalytic activity and stability toward the methane conversion reactions, which is attributed to the exsolved alloy nanoparticles and the active oxygen species on the reduced Ni0.08Co0.02Ce0.9O2-δ catalyst as well as the facilitated methane transport rooting in the special open-pore microstructure of the anode substrate. Strikingly, this button cell delivers an excellent peak power density of 730 mW cm-2 at 800 °C in 97% CH4/3% H2O fuel, only 9% lower than that in 97% H2/3% H2O. Our work shed new light on the SOFC anode developments.
AB - Direct utilization of methane in solid oxide fuel cells (SOFCs) is greatly impeded by the grievous carbon deposition and the much depressed catalytic activity. In this work, a promising anode, taking finger-like porous YSZ as the anode substrate and impregnated Ni0.08Co0.02Ce0.9O2-δ@Ni0.8Co0.2O as the novel catalyst, is fabricated via the phase conversion-combined tape-casting technique. This anode shows commendable mechanical strength and excellent catalytic activity and stability toward the methane conversion reactions, which is attributed to the exsolved alloy nanoparticles and the active oxygen species on the reduced Ni0.08Co0.02Ce0.9O2-δ catalyst as well as the facilitated methane transport rooting in the special open-pore microstructure of the anode substrate. Strikingly, this button cell delivers an excellent peak power density of 730 mW cm-2 at 800 °C in 97% CH4/3% H2O fuel, only 9% lower than that in 97% H2/3% H2O. Our work shed new light on the SOFC anode developments.
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U2 - 10.1021/acsami.0c17339
DO - 10.1021/acsami.0c17339
M3 - Article
C2 - 33492121
AN - SCOPUS:85100679988
SN - 1944-8244
VL - 13
SP - 4943
EP - 4954
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 4
ER -