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Promoting exsolution of RuFe alloy nanoparticles on Sr₂Fe_1.4Ru_0.1Mo_0.5O_6-δ via repeated redox manipulations for CO₂ electrolysis.

ABSTRACT: Metal nanoparticles anchored on perovskite through in situ exsolution under reducing atmosphere provide catalytically active metal/oxide interfaces for CO₂ electrolysis in solid oxide electrolysis cell. However, there are critical challenges to obtain abundant metal/oxide interfaces due to the sluggish diffusion process of dopant cations inside the bulk perovskite. Herein, we propose a strategy to promote exsolution of RuFe alloy nanoparticles on Sr₂Fe_1.4Ru_0.1Mo_0.5O_6-δ perovskite by enriching the active Ru underneath the perovskite surface via repeated redox manipulations. In situ scanning transmission electron microscopy demonstrates the dynamic structure evolution of Sr₂Fe_1.4Ru_0.1Mo_0.5O_6-δ perovskite under reducing and oxidizing atmosphere, as well as the facilitated CO₂ adsorption at RuFe@Sr₂Fe_1.4Ru_0.1Mo_0.5O_6-δ interfaces. Solid oxide electrolysis cell with RuFe@Sr₂Fe_1.4Ru_0.1Mo_0.5O_6-δ interfaces shows over 74.6% enhancement in current density of CO₂ electrolysis compared to that with Sr₂Fe_1.4Ru_0.1Mo_0.5O_6-δ counterpart as well as impressive stability for 1000 h at 1.2 V and 800 °C.

SUBMITTER: Lv H

PROVIDER: S-EPMC8476569 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature

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Promoting exsolution of RuFe alloy nanoparticles on Sr2Fe1.4Ru0.1Mo0.5O6-δ via repeated redox manipulations for CO2 electrolysis.

Lv Houfu H Lin Le L Zhang Xiaomin X Li Rongtan R Song Yuefeng Y Matsumoto Hiroaki H Ta Na N Zeng Chaobin C Fu Qiang Q Wang Guoxiong G Bao Xinhe X

Nature communications 20210927 1

Metal nanoparticles anchored on perovskite through in situ exsolution under reducing atmosphere provide catalytically active metal/oxide interfaces for CO2 electrolysis in solid oxide electrolysis cell. However, there are critical challenges to obtain abundant metal/oxide interfaces due to the sluggish diffusion process of dopant cations inside the bulk perovskite. Herein, we propose a strategy to promote exsolution of RuFe alloy nanoparticles on Sr2Fe1.4Ru0 ...[more]

PMID: 34580312

Dataset Information

Promoting exsolution of RuFe alloy nanoparticles on Sr₂Fe_1.4Ru_0.1Mo_0.5O_6-δ via repeated redox manipulations for CO₂ electrolysis.

Publications

Promoting exsolution of RuFe alloy nanoparticles on Sr<sub>2</sub>Fe<sub>1.4</sub>Ru<sub>0.1</sub>Mo<sub>0.5</sub>O<sub>6-δ</sub> via repeated redox manipulations for CO<sub>2</sub> electrolysis.

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