Realizing efficient operations of Ni-cermet-based fuel cells on hydrocarbons via an in situ self-assembled metal/oxide nano-heterostructured catalyst

Kang Xu; Hua Zhang; Yangsen Xu; Feng Zhu; Fan He; Kotaro Sasaki; Yong Man Choi; Yu Chen

doi:10.1016/j.apcatb.2024.124208

Realizing efficient operations of Ni-cermet-based fuel cells on hydrocarbons via an in situ self-assembled metal/oxide nano-heterostructured catalyst

Kang Xu, Hua Zhang, Yangsen Xu, Feng Zhu, Fan He, Kotaro Sasaki, Yong Man Choi^*, Yu Chen

^*Corresponding author for this work

Institute of Photonic System

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Operating Ni-cermet-based fuel cells on hydrocarbons is charming but largely hindered by poor coking tolerance and severe deterioration. Here, we report an effective metal/oxide nano-heterostructured catalyst with a nominal composition of Pr_0.95Ru_0.05O_2-δ (PRO), which is in situ self-assembled to a Pr_0.95Ru_0.05-xO_2-δ oxide frame coated with Ru metallic nanoparticles (denoted as Ru/PRO) under the operation condition. When applied to the Ni-cermet (Ni-YSZ) anodes, the cells achieve decent peak power densities of 1.784 and 1.870 W cm⁻² on CH₄ and C₃H₈ with only 3 % H₂O at 750 °C, respectively. Moreover, the cells with Ru/PRO-coated anode demonstrate excellent durability when operated on CH₄ for ∼ 220 h and C₃H₈ for ∼115 h. It is demonstrated that the Ru/PRO generates hydroxyl species that react with carbon species, followed by the formation of COH intermediates on anode surfaces for removing the coking, as confirmed by experiments and computations.

Original language	English
Article number	124208
Journal	Applied Catalysis B: Environmental
Volume	355
DOIs	https://doi.org/10.1016/j.apcatb.2024.124208
State	Published - 15 Oct 2024

Keywords

Catalysts
Coking tolerance
Nano-heterostructure
Ni-cermet anodes
Solid oxide fuel cells

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10.1016/j.apcatb.2024.124208

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title = "Realizing efficient operations of Ni-cermet-based fuel cells on hydrocarbons via an in situ self-assembled metal/oxide nano-heterostructured catalyst",

abstract = "Operating Ni-cermet-based fuel cells on hydrocarbons is charming but largely hindered by poor coking tolerance and severe deterioration. Here, we report an effective metal/oxide nano-heterostructured catalyst with a nominal composition of Pr0.95Ru0.05O2-δ (PRO), which is in situ self-assembled to a Pr0.95Ru0.05-xO2-δ oxide frame coated with Ru metallic nanoparticles (denoted as Ru/PRO) under the operation condition. When applied to the Ni-cermet (Ni-YSZ) anodes, the cells achieve decent peak power densities of 1.784 and 1.870 W cm−2 on CH4 and C3H8 with only 3 % H2O at 750 °C, respectively. Moreover, the cells with Ru/PRO-coated anode demonstrate excellent durability when operated on CH4 for ∼ 220 h and C3H8 for ∼115 h. It is demonstrated that the Ru/PRO generates hydroxyl species that react with carbon species, followed by the formation of COH intermediates on anode surfaces for removing the coking, as confirmed by experiments and computations.",

keywords = "Catalysts, Coking tolerance, Nano-heterostructure, Ni-cermet anodes, Solid oxide fuel cells",

author = "Kang Xu and Hua Zhang and Yangsen Xu and Feng Zhu and Fan He and Kotaro Sasaki and Choi, {Yong Man} and Yu Chen",

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doi = "10.1016/j.apcatb.2024.124208",

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T1 - Realizing efficient operations of Ni-cermet-based fuel cells on hydrocarbons via an in situ self-assembled metal/oxide nano-heterostructured catalyst

AU - Xu, Kang

AU - Zhang, Hua

AU - Xu, Yangsen

AU - Zhu, Feng

AU - He, Fan

AU - Sasaki, Kotaro

AU - Choi, Yong Man

AU - Chen, Yu

PY - 2024/10/15

Y1 - 2024/10/15

N2 - Operating Ni-cermet-based fuel cells on hydrocarbons is charming but largely hindered by poor coking tolerance and severe deterioration. Here, we report an effective metal/oxide nano-heterostructured catalyst with a nominal composition of Pr0.95Ru0.05O2-δ (PRO), which is in situ self-assembled to a Pr0.95Ru0.05-xO2-δ oxide frame coated with Ru metallic nanoparticles (denoted as Ru/PRO) under the operation condition. When applied to the Ni-cermet (Ni-YSZ) anodes, the cells achieve decent peak power densities of 1.784 and 1.870 W cm−2 on CH4 and C3H8 with only 3 % H2O at 750 °C, respectively. Moreover, the cells with Ru/PRO-coated anode demonstrate excellent durability when operated on CH4 for ∼ 220 h and C3H8 for ∼115 h. It is demonstrated that the Ru/PRO generates hydroxyl species that react with carbon species, followed by the formation of COH intermediates on anode surfaces for removing the coking, as confirmed by experiments and computations.

AB - Operating Ni-cermet-based fuel cells on hydrocarbons is charming but largely hindered by poor coking tolerance and severe deterioration. Here, we report an effective metal/oxide nano-heterostructured catalyst with a nominal composition of Pr0.95Ru0.05O2-δ (PRO), which is in situ self-assembled to a Pr0.95Ru0.05-xO2-δ oxide frame coated with Ru metallic nanoparticles (denoted as Ru/PRO) under the operation condition. When applied to the Ni-cermet (Ni-YSZ) anodes, the cells achieve decent peak power densities of 1.784 and 1.870 W cm−2 on CH4 and C3H8 with only 3 % H2O at 750 °C, respectively. Moreover, the cells with Ru/PRO-coated anode demonstrate excellent durability when operated on CH4 for ∼ 220 h and C3H8 for ∼115 h. It is demonstrated that the Ru/PRO generates hydroxyl species that react with carbon species, followed by the formation of COH intermediates on anode surfaces for removing the coking, as confirmed by experiments and computations.

KW - Catalysts

KW - Coking tolerance

KW - Nano-heterostructure

KW - Ni-cermet anodes

KW - Solid oxide fuel cells

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DO - 10.1016/j.apcatb.2024.124208

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SN - 0926-3373

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ER -

Realizing efficient operations of Ni-cermet-based fuel cells on hydrocarbons via an in situ self-assembled metal/oxide nano-heterostructured catalyst

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