Boosting CO2 electrolysis performance: via calcium-oxide-looping combined with in situ exsolved Ni-Fe nanoparticles in a symmetrical solid oxide electrolysis cell

Yunfeng Tian; Yun Liu; Aaron Naden; Lichao Jia; Min Xu; Wen Cui; Bo Chi; Jian Pu; John T.S. Irvine; Jian Li

doi:10.1039/d0ta05518b

Boosting CO₂electrolysis performance: via calcium-oxide-looping combined with in situ exsolved Ni-Fe nanoparticles in a symmetrical solid oxide electrolysis cell

Yunfeng Tian, Yun Liu, Aaron Naden, Lichao Jia, Min Xu, Wen Cui, Bo Chi^*, Jian Pu, John T.S. Irvine, Jian Li

^*Corresponding author for this work

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

Abstract

The electrocatalysis of CO₂ to valuable chemical products is an important strategy to combat global warming. Symmetrical solid oxide electrolysis cells have been extensively recognized for their CO₂ electrolysis abilities due to their high efficiency, low cost, and reliability. Here, we produced a novel electrode containing calcium oxide-looping and in situ exsolved Ni–Fe nanoparticles by performing a one-step reduction of La_0.6Ca_0.4Fe_0.8Ni_0.2O_3−δ (LCaFN). The CO₂ captured by CaO was electrolyzed in situ by the Ni–Fe nanocatalysts. The cell with this special cathode showed a higher current density (0.632 A cm⁻²vs. 0.32 A cm⁻²) and lower polarization resistance (0.399 Ω cm²vs. 0.662 Ω cm²) than the unreduced LCaFN cathode at 800 °C with an applied voltage of 1.3 V. Use of the developed novel electrode offers a promising strategy for CO₂ electrolysis.

Original language	English
Pages (from-to)	14895-14899
Number of pages	5
Journal	Journal of Materials Chemistry A
Volume	8
Issue number	30
Early online date	11 Jul 2020
DOIs	https://doi.org/10.1039/d0ta05518b
Publication status	Published - 14 Aug 2020

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Cite this

@article{8d9900f874d745c0a4f52157c6365125,

title = "Boosting CO2 electrolysis performance: via calcium-oxide-looping combined with in situ exsolved Ni-Fe nanoparticles in a symmetrical solid oxide electrolysis cell",

abstract = "The electrocatalysis of CO2 to valuable chemical products is an important strategy to combat global warming. Symmetrical solid oxide electrolysis cells have been extensively recognized for their CO2 electrolysis abilities due to their high efficiency, low cost, and reliability. Here, we produced a novel electrode containing calcium oxide-looping and in situ exsolved Ni–Fe nanoparticles by performing a one-step reduction of La0.6Ca0.4Fe0.8Ni0.2O3−δ (LCaFN). The CO2 captured by CaO was electrolyzed in situ by the Ni–Fe nanocatalysts. The cell with this special cathode showed a higher current density (0.632 A cm−2vs. 0.32 A cm−2) and lower polarization resistance (0.399 Ω cm2vs. 0.662 Ω cm2) than the unreduced LCaFN cathode at 800 °C with an applied voltage of 1.3 V. Use of the developed novel electrode offers a promising strategy for CO2 electrolysis.",

author = "Yunfeng Tian and Yun Liu and Aaron Naden and Lichao Jia and Min Xu and Wen Cui and Bo Chi and Jian Pu and Irvine, {John T.S.} and Jian Li",

note = "Financial support from National Key Research & Development Project (2016YFE0126900), National Natural Science Foundation of China (51672095), Hubei Province (2018AAA057) and the EPSRC Capital for Great Technologies Grant EP/L017008/1. We are grateful to the China Scholarship Council for funding (201806160178). ",

year = "2020",

month = aug,

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doi = "10.1039/d0ta05518b",

language = "English",

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pages = "14895--14899",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

publisher = "ROYAL SOC CHEMISTRY",

number = "30",

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T1 - Boosting CO2 electrolysis performance

T2 - via calcium-oxide-looping combined with in situ exsolved Ni-Fe nanoparticles in a symmetrical solid oxide electrolysis cell

AU - Tian, Yunfeng

AU - Liu, Yun

AU - Naden, Aaron

AU - Jia, Lichao

AU - Xu, Min

AU - Cui, Wen

AU - Chi, Bo

AU - Pu, Jian

AU - Irvine, John T.S.

AU - Li, Jian

N1 - Financial support from National Key Research & Development Project (2016YFE0126900), National Natural Science Foundation of China (51672095), Hubei Province (2018AAA057) and the EPSRC Capital for Great Technologies Grant EP/L017008/1. We are grateful to the China Scholarship Council for funding (201806160178).

PY - 2020/8/14

Y1 - 2020/8/14

N2 - The electrocatalysis of CO2 to valuable chemical products is an important strategy to combat global warming. Symmetrical solid oxide electrolysis cells have been extensively recognized for their CO2 electrolysis abilities due to their high efficiency, low cost, and reliability. Here, we produced a novel electrode containing calcium oxide-looping and in situ exsolved Ni–Fe nanoparticles by performing a one-step reduction of La0.6Ca0.4Fe0.8Ni0.2O3−δ (LCaFN). The CO2 captured by CaO was electrolyzed in situ by the Ni–Fe nanocatalysts. The cell with this special cathode showed a higher current density (0.632 A cm−2vs. 0.32 A cm−2) and lower polarization resistance (0.399 Ω cm2vs. 0.662 Ω cm2) than the unreduced LCaFN cathode at 800 °C with an applied voltage of 1.3 V. Use of the developed novel electrode offers a promising strategy for CO2 electrolysis.

AB - The electrocatalysis of CO2 to valuable chemical products is an important strategy to combat global warming. Symmetrical solid oxide electrolysis cells have been extensively recognized for their CO2 electrolysis abilities due to their high efficiency, low cost, and reliability. Here, we produced a novel electrode containing calcium oxide-looping and in situ exsolved Ni–Fe nanoparticles by performing a one-step reduction of La0.6Ca0.4Fe0.8Ni0.2O3−δ (LCaFN). The CO2 captured by CaO was electrolyzed in situ by the Ni–Fe nanocatalysts. The cell with this special cathode showed a higher current density (0.632 A cm−2vs. 0.32 A cm−2) and lower polarization resistance (0.399 Ω cm2vs. 0.662 Ω cm2) than the unreduced LCaFN cathode at 800 °C with an applied voltage of 1.3 V. Use of the developed novel electrode offers a promising strategy for CO2 electrolysis.

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