In Situ Topotactic Transformation of an Interstitial Alloy for CO Electroreduction

Changming Zhao; Gan Luo; Xiaokang Liu; Wei Zhang; Zhijun Li; Qian Xu; Qinghua Zhang; Huijuan Wang; Deming Li; Fangyao Zhou; Yunteng Qu; Xiao Han; Zezhou Zhu; Geng Wu; Jing Wang; Junfa Zhu; Tao Yao; Yafei Li; Henny J.M. Bouwmeester; Yuen Wu

doi:10.1002/adma.202002382

In Situ Topotactic Transformation of an Interstitial Alloy for CO Electroreduction

Changming Zhao, Gan Luo, Xiaokang Liu, Wei Zhang, Zhijun Li, Qian Xu, Qinghua Zhang, Huijuan Wang, Deming Li, Fangyao Zhou, Yunteng Qu, Xiao Han, Zezhou Zhu, Geng Wu, Jing Wang, Junfa Zhu, Tao Yao, Yafei Li, Henny J.M. Bouwmeester, Yuen Wu^*

^*Corresponding author for this work

Inorganic Membranes

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

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Abstract

Electrochemical reduction of CO to value-added products holds promise for storage of energy from renewable sources. Copper can convert CO into multi-carbon (C₂₊) products during CO electroreduction. However, developing a Cu electrocatalyst with a high selectivity for CO reduction and desirable production rates for C₂₊ products remains challenging. Herein, highly lattice-disordered Cu₃N with abundant twin structures as a precursor electrocatalyst is examined for CO reduction. Through in situ activation during the CO reduction reaction (CORR) and concomitant release of nitrogen, the obtained metallic Cu° catalyst particles inherit the lattice dislocations present in the parent Cu₃N lattice. The de-nitrified catalyst delivers an unprecedented C₂₊ Faradaic efficiency of over 90% at a current density of 727 mA cm⁻² in a flow cell system. Using a membrane electrode assembly (MEA) electrolyzer with a solid-state electrolyte (SSE), a 17.4 vol% ethylene stream and liquid streams with concentration of 1.45 m and 230 × 10⁻³ m C₂₊ products at the outlet of the cathode and SSE-containment layer are obtained.

Original language	English
Article number	2002382
Journal	Advanced materials
Volume	32
Issue number	39
DOIs	https://doi.org/10.1002/adma.202002382
Publication status	Published - 1 Oct 2020

Keywords

CO electroreduction
Cu N
high concentration products streams
lattice dislocations
multi-carbon products
n/a OA procedure

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/adma.202002382

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Zhao, C., Luo, G., Liu, X., Zhang, W., Li, Z., Xu, Q., Zhang, Q., Wang, H., Li, D., Zhou, F., Qu, Y., Han, X., Zhu, Z., Wu, G., Wang, J., Zhu, J., Yao, T., Li, Y., Bouwmeester, H. J. M., & Wu, Y. (2020). In Situ Topotactic Transformation of an Interstitial Alloy for CO Electroreduction. Advanced materials, 32(39), Article 2002382. https://doi.org/10.1002/adma.202002382

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title = "In Situ Topotactic Transformation of an Interstitial Alloy for CO Electroreduction",

abstract = "Electrochemical reduction of CO to value-added products holds promise for storage of energy from renewable sources. Copper can convert CO into multi-carbon (C2+) products during CO electroreduction. However, developing a Cu electrocatalyst with a high selectivity for CO reduction and desirable production rates for C2+ products remains challenging. Herein, highly lattice-disordered Cu3N with abundant twin structures as a precursor electrocatalyst is examined for CO reduction. Through in situ activation during the CO reduction reaction (CORR) and concomitant release of nitrogen, the obtained metallic Cu° catalyst particles inherit the lattice dislocations present in the parent Cu3N lattice. The de-nitrified catalyst delivers an unprecedented C2+ Faradaic efficiency of over 90% at a current density of 727 mA cm−2 in a flow cell system. Using a membrane electrode assembly (MEA) electrolyzer with a solid-state electrolyte (SSE), a 17.4 vol% ethylene stream and liquid streams with concentration of 1.45 m and 230 × 10−3 m C2+ products at the outlet of the cathode and SSE-containment layer are obtained.",

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author = "Changming Zhao and Gan Luo and Xiaokang Liu and Wei Zhang and Zhijun Li and Qian Xu and Qinghua Zhang and Huijuan Wang and Deming Li and Fangyao Zhou and Yunteng Qu and Xiao Han and Zezhou Zhu and Geng Wu and Jing Wang and Junfa Zhu and Tao Yao and Yafei Li and Bouwmeester, {Henny J.M.} and Yuen Wu",

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AU - Zhao, Changming

AU - Luo, Gan

AU - Liu, Xiaokang

AU - Zhang, Wei

AU - Li, Zhijun

AU - Xu, Qian

AU - Zhang, Qinghua

AU - Wang, Huijuan

AU - Li, Deming

AU - Zhou, Fangyao

AU - Qu, Yunteng

AU - Han, Xiao

AU - Zhu, Zezhou

AU - Wu, Geng

AU - Wang, Jing

AU - Zhu, Junfa

AU - Yao, Tao

AU - Li, Yafei

AU - Bouwmeester, Henny J.M.

AU - Wu, Yuen

PY - 2020/10/1

Y1 - 2020/10/1

N2 - Electrochemical reduction of CO to value-added products holds promise for storage of energy from renewable sources. Copper can convert CO into multi-carbon (C2+) products during CO electroreduction. However, developing a Cu electrocatalyst with a high selectivity for CO reduction and desirable production rates for C2+ products remains challenging. Herein, highly lattice-disordered Cu3N with abundant twin structures as a precursor electrocatalyst is examined for CO reduction. Through in situ activation during the CO reduction reaction (CORR) and concomitant release of nitrogen, the obtained metallic Cu° catalyst particles inherit the lattice dislocations present in the parent Cu3N lattice. The de-nitrified catalyst delivers an unprecedented C2+ Faradaic efficiency of over 90% at a current density of 727 mA cm−2 in a flow cell system. Using a membrane electrode assembly (MEA) electrolyzer with a solid-state electrolyte (SSE), a 17.4 vol% ethylene stream and liquid streams with concentration of 1.45 m and 230 × 10−3 m C2+ products at the outlet of the cathode and SSE-containment layer are obtained.

AB - Electrochemical reduction of CO to value-added products holds promise for storage of energy from renewable sources. Copper can convert CO into multi-carbon (C2+) products during CO electroreduction. However, developing a Cu electrocatalyst with a high selectivity for CO reduction and desirable production rates for C2+ products remains challenging. Herein, highly lattice-disordered Cu3N with abundant twin structures as a precursor electrocatalyst is examined for CO reduction. Through in situ activation during the CO reduction reaction (CORR) and concomitant release of nitrogen, the obtained metallic Cu° catalyst particles inherit the lattice dislocations present in the parent Cu3N lattice. The de-nitrified catalyst delivers an unprecedented C2+ Faradaic efficiency of over 90% at a current density of 727 mA cm−2 in a flow cell system. Using a membrane electrode assembly (MEA) electrolyzer with a solid-state electrolyte (SSE), a 17.4 vol% ethylene stream and liquid streams with concentration of 1.45 m and 230 × 10−3 m C2+ products at the outlet of the cathode and SSE-containment layer are obtained.

KW - CO electroreduction

KW - Cu N

KW - high concentration products streams

KW - lattice dislocations

KW - multi-carbon products

KW - n/a OA procedure

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DO - 10.1002/adma.202002382

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VL - 32

JO - Advanced materials

JF - Advanced materials

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ER -

In Situ Topotactic Transformation of an Interstitial Alloy for CO Electroreduction

Abstract

Keywords

UN SDGs

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