Superhydrophobic and conductive wire membrane for enhanced CO₂ electroreduction to multicarbon products
Gas-liquid-solid triple-phase interfaces (TPI) are essential for promoting electrochemical CO2 reduction, but it remains challenging to maximize their efficiency while integrating other desirable properties conducive to electrocatalysis. Herein, we report the elaborate design and fabrication of a su...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/166112 |
| _version_ | 1826113906498600960 |
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| author | Li, Yunxiang Pei, Zhihao Luan, Deyan Lou, Xiong Wen David |
| author2 | School of Chemistry, Chemical Engineering and Biotechnology |
| author_facet | School of Chemistry, Chemical Engineering and Biotechnology Li, Yunxiang Pei, Zhihao Luan, Deyan Lou, Xiong Wen David |
| author_sort | Li, Yunxiang |
| collection | NTU |
| description | Gas-liquid-solid triple-phase interfaces (TPI) are essential for promoting electrochemical CO2 reduction, but it remains challenging to maximize their efficiency while integrating other desirable properties conducive to electrocatalysis. Herein, we report the elaborate design and fabrication of a superhydrophobic, conductive, and hierarchical wire membrane in which core–shell CuO nanospheres, carbon nanotubes (CNT), and polytetrafluoroethylene (PTFE) are integrated into a wire structure (designated as CuO/F/C(w); F, PTFE; C, CNT; w, wire) to maximize their respective functions. The realized architecture allows almost all CuO nanospheres to be exposed with effective TPI and good contact to conductive CNT, thus increasing the local CO2 concentration on the CuO surface and enabling fast electron/mass transfer. As a result, the CuO/F/C(w) membrane attains a Faradaic efficiency of 56.8 % and a partial current density of 68.9 mA cm−2 for multicarbon products at −1.4 V (versus the reversible hydrogen electrode) in the H-type cell, far exceeding 10.1 % and 13.4 mA cm−2 for bare CuO. |
| first_indexed | 2024-10-01T03:30:55Z |
| format | Journal Article |
| id | ntu-10356/166112 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:30:55Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1661122023-06-21T08:16:48Z Superhydrophobic and conductive wire membrane for enhanced CO₂ electroreduction to multicarbon products Li, Yunxiang Pei, Zhihao Luan, Deyan Lou, Xiong Wen David School of Chemistry, Chemical Engineering and Biotechnology Science::Chemistry Electrocatalysis Multicarbon Products· Gas-liquid-solid triple-phase interfaces (TPI) are essential for promoting electrochemical CO2 reduction, but it remains challenging to maximize their efficiency while integrating other desirable properties conducive to electrocatalysis. Herein, we report the elaborate design and fabrication of a superhydrophobic, conductive, and hierarchical wire membrane in which core–shell CuO nanospheres, carbon nanotubes (CNT), and polytetrafluoroethylene (PTFE) are integrated into a wire structure (designated as CuO/F/C(w); F, PTFE; C, CNT; w, wire) to maximize their respective functions. The realized architecture allows almost all CuO nanospheres to be exposed with effective TPI and good contact to conductive CNT, thus increasing the local CO2 concentration on the CuO surface and enabling fast electron/mass transfer. As a result, the CuO/F/C(w) membrane attains a Faradaic efficiency of 56.8 % and a partial current density of 68.9 mA cm−2 for multicarbon products at −1.4 V (versus the reversible hydrogen electrode) in the H-type cell, far exceeding 10.1 % and 13.4 mA cm−2 for bare CuO. Ministry of Education (MOE) Submitted/Accepted version The authors acknowledge the funding support from the Ministry of Educationof Singapore through the Academic Research Fund (AcRF) Tier-2 grant (MOE2019-T2-2-049). 2023-04-17T06:29:56Z 2023-04-17T06:29:56Z 2023 Journal Article Li, Y., Pei, Z., Luan, D. & Lou, X. W. D. (2023). Superhydrophobic and conductive wire membrane for enhanced CO₂ electroreduction to multicarbon products. Angewandte Chemie International Edition. https://dx.doi.org/10.1002/anie.202302128 1433-7851 https://hdl.handle.net/10356/166112 10.1002/anie.202302128 en MOE2019-T2-2-049 Angewandte Chemie International Edition © 023Wiley-VCHGmbH. All rights reserved. This is the peer reviewed version of the following article: Li, Y., Pei, Z., Luan, D. & Xiong, D. W. L. (2023). Superhydrophobic and conductive wire membrane for enhanced CO₂ electroreduction to multicarbon products. Angewandte Chemie International Edition, which has been published in final form at https://doi.org/10.1002/anie.202302128. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
| spellingShingle | Science::Chemistry Electrocatalysis Multicarbon Products· Li, Yunxiang Pei, Zhihao Luan, Deyan Lou, Xiong Wen David Superhydrophobic and conductive wire membrane for enhanced CO₂ electroreduction to multicarbon products |
| title | Superhydrophobic and conductive wire membrane for enhanced CO₂ electroreduction to multicarbon products |
| title_full | Superhydrophobic and conductive wire membrane for enhanced CO₂ electroreduction to multicarbon products |
| title_fullStr | Superhydrophobic and conductive wire membrane for enhanced CO₂ electroreduction to multicarbon products |
| title_full_unstemmed | Superhydrophobic and conductive wire membrane for enhanced CO₂ electroreduction to multicarbon products |
| title_short | Superhydrophobic and conductive wire membrane for enhanced CO₂ electroreduction to multicarbon products |
| title_sort | superhydrophobic and conductive wire membrane for enhanced co₂ electroreduction to multicarbon products |
| topic | Science::Chemistry Electrocatalysis Multicarbon Products· |
| url | https://hdl.handle.net/10356/166112 |
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