High-Performance Anode Material Sr2FeMo0.65Ni0.35O6−δ with In Situ Exsolved Nanoparticle Catalyst

Du, Zhenmin; Zhao, Hailei; Yi, Sha; Xia, Qing; Gong, Yue; Zhang, Yang; Cheng, Xuequn; Li, Yan; Gu, Lin; Świerczek, Konrad

doi:10.1021/acsnano.6b03979

Cited by 314 publications

(238 citation statements)

References 69 publications

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“…Especially, the exsolved Co and Ni nanoparticles on the surface of the layered perovskite show excellent cell performance (1.15 and 1.12 W cm −2 at 800 °C in H 2 , respectively) among developed ceramic anodes without adding any catalysts externally (Fig. 4d and Supplementary Table 3)28293031323334.…”

Section: Resultsmentioning

confidence: 95%

“…( b ) I – V curve and the corresponding power densities of the PrBaMn 1.7 Co 0.3 O 5+ δ (L-PBMCO) and PrBaMn 1.7 Ni 0.3 O 5+ δ (L-PBMNO) electrode using C 3 H 8 as fuel and ambient air as the oxidant at 800 °C. ( c ) Electrochemical performances of L-PBMNO anode in C 3 H 8 at 700 °C under a constant voltage of 0.6 V. ( d ) Comparison of the maximum power density at 800 °C in H 2 of the present work and other studies in the literature28293031323334.…”

Section: Figurementioning

confidence: 83%

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Exsolution trends and co-segregation aspects of self-grown catalyst nanoparticles in perovskites

et al. 2017

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In perovskites, exsolution of transition metals has been proposed as a smart catalyst design for energy applications. Although there exist transition metals with superior catalytic activity, they are limited by their ability to exsolve under a reducing environment. When a doping element is present in the perovskite, it is often observed that the surface segregation of the doping element is changed by oxygen vacancies. However, the mechanism of co-segregation of doping element with oxygen vacancies is still an open question. Here we report trends in the exsolution of transition metal (Mn, Co, Ni and Fe) on the PrBaMn2O5+δ layered perovskite oxide related to the co-segregation energy. Transmission electron microscopic observations show that easily reducible cations (Mn, Co and Ni) are exsolved from the perovskite depending on the transition metal-perovskite reducibility. In addition, using density functional calculations we reveal that co-segregation of B-site dopant and oxygen vacancies plays a central role in the exsolution.

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Section: Resultsmentioning

confidence: 95%

Section: Figurementioning

confidence: 83%

Exsolution trends and co-segregation aspects of self-grown catalyst nanoparticles in perovskites

et al. 2017

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“…However, this strategy usually produces a limited number of Ni‐based nanoparticles. Very recently, Du et al reported the fabrication of an Sr 3 FeMoO 7− δ and SrFe x Mo 1− x O 3− δ composites decorated with FeNi 3 alloy nanoparticles by reducing the Sr 2 FeMo 0.65 Ni 0.35 O 6− δ double perovskite oxide at a high temperature, showing favorable activity and high coking resistance 20. The number of Ni–Fe alloy nanoparticles deposited on the composite was high due to the conversion‐type reaction used to prepare it.…”

mentioning

confidence: 99%

Rational Design of a Water‐Storable Hierarchical Architecture Decorated with Amorphous Barium Oxide and Nickel Nanoparticles as a Solid Oxide Fuel Cell Anode with Excellent Sulfur Tolerance

Song

Wang

et al. 2017

Advanced Science

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Solid oxide fuel cells (SOFCs), which can directly convert chemical energy stored in fuels into electric power, represent a useful technology for a more sustainable future. They are particularly attractive given that they can be easily integrated into the currently available fossil fuel infrastructure to realize an ideal clean energy system. However, the widespread use of the SOFC technology is hindered by sulfur poisoning at the anode caused by the sulfur impurities in fossil fuels. Therefore, improving the sulfur tolerance of the anode is critical for developing SOFCs for use with fossil fuels. Herein, a novel, highly active, sulfur‐tolerant anode for intermediate‐temperature SOFCs is prepared via a facile impregnation and limited reaction protocol. During synthesis, Ni nanoparticles, water‐storable BaZr0.4Ce0.4Y0.2O3− δ (BZCY) perovskite, and amorphous BaO are formed in situ and deposited on the surface of a Sm0.2Ce0.8O1.9 (SDC) scaffold. More specifically, a porous SDC scaffold is impregnated with a well‐designed proton‐conducting perovskite oxide liquid precursor with the nominal composition of Ba(Zr0.4Ce0.4Y0.2)0.8Ni0.2O3− δ (BZCYN), calcined and reduced in hydrogen. The as‐synthesized hierarchical architecture exhibits high H2 electro‐oxidation activity, excellent operational stability, superior sulfur tolerance, and good thermal cyclability. This work demonstrates the potential of combining nanocatalysts and water‐storable materials in advanced electrocatalysts for SOFCs.

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“…The newly formed nanocomposite showed very high and stable activity for hydrocarbon and hydrogen electro‐oxidation reactions and favorable sulfur/coking tolerance. Recently, by controlling the reducing condition, Sr 2 FeMo 0.65 Ni 0.35 O 6− δ (SFMNi) double perovskite was converted into mixed phases containing Sr 3 FeMoO 7− δ , Sr(FeMo)O 3− δ , and FeNi 3 alloy nanoparticles . The electrochemical performance of the SFMNi anode was markedly improved by the in situ exsolved FeNi 3 alloy nanoparticles that were homogeneously distributed on the surface of the perovskite backbone.…”

Section: Nanostructured Perovskites For Electrocatalysis‐based Energymentioning

confidence: 99%

Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

et al. 2018

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Perovskite oxides hold great promise as efficient electrocatalysts for various energy‐related applications owing to their low cost, flexible structure, and high intrinsic catalytic activity. However, conventional synthetic methods can only obtain perovskite catalysts with large particle sizes, small surface areas, and few morphological features, leading to limited catalytic activity and thus posing a major challenge toward real‐world applications. Reducing the size of bulk perovskites down to the nanosize represents an efficient way to improve the electrocatalytic performance. A comprehensive overview of recent progress in the nanostructuring of perovskites for catalyzing several key reactions in metal–air batteries, water splitting, and solid oxide fuel cells is provided. A range of synthetic protocols for making perovskite nanostructures are summarized, followed by an emphasis on how each method can be tailored to obtain high‐performing perovskite nanocatalysts. These recent advances highlight the enormous potential of nanosized perovskites for facilitating the electrocatalytic reactions. The remaining challenges and future directions are pointed out for the development of next‐generation perovskite‐based nanostructured catalysts.

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High-Performance Anode Material Sr₂FeMo_0.65Ni_0.35O_6−δ with In Situ Exsolved Nanoparticle Catalyst

Cited by 314 publications

References 69 publications

Exsolution trends and co-segregation aspects of self-grown catalyst nanoparticles in perovskites

Exsolution trends and co-segregation aspects of self-grown catalyst nanoparticles in perovskites

Rational Design of a Water‐Storable Hierarchical Architecture Decorated with Amorphous Barium Oxide and Nickel Nanoparticles as a Solid Oxide Fuel Cell Anode with Excellent Sulfur Tolerance

Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

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