Continuous decoupled redox electrochemical CO2 capture
Abstract Electrochemical CO2 capture driven by renewable electricity holds significant potential for efficient decarbonization. However, the widespread adoption of this approach is currently limited by issues such as instability, discontinuity, high energy demand, and challenges in scaling up. In th...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55334-3 |
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| _version_ | 1841559284874215424 |
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| author | Tao Liu Yunpeng Wang Yifan Wu Wenchuan Jiang Yuchao Deng Qing Li Cheng Lan Zhiyu Zhao Liangyu Zhu Dongsheng Yang Timothy Noël Heping Xie |
| author_facet | Tao Liu Yunpeng Wang Yifan Wu Wenchuan Jiang Yuchao Deng Qing Li Cheng Lan Zhiyu Zhao Liangyu Zhu Dongsheng Yang Timothy Noël Heping Xie |
| author_sort | Tao Liu |
| collection | DOAJ |
| description | Abstract Electrochemical CO2 capture driven by renewable electricity holds significant potential for efficient decarbonization. However, the widespread adoption of this approach is currently limited by issues such as instability, discontinuity, high energy demand, and challenges in scaling up. In this study, we propose a scalable strategy that addresses these limitations by transforming the conventional single-step electrochemical redox reaction into a stepwise electrochemical-chemical redox process. Specifically, the hydrogen evolution reaction (HER) at the cathode and the oxidation of a redox carrier at the anode are employed to modulate the pH of the electrolyte, thereby facilitating effective CO2 capture. By decoupling the electrochemical swing for CO2 capture from redox carrier regeneration in both temporal and spatial domains, this approach mitigates unwanted side reactions and enhances system stability. Our results demonstrate a stable CO2 capture process sustained for over 200 h, with a electrical work of 49.16 kJe mol-1 CO2 at a current density of 10 mA cm-2. Furthermore, a scaled-up system capable of producing approximately 0.4 kg of pure CO2 per day maintained stable operation for 72 h, highlighting the potential feasibility of this method for large-scale decarbonization applications. |
| format | Article |
| id | doaj-art-654151906de349eaa357f0bf9dcbfb19 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-654151906de349eaa357f0bf9dcbfb192025-01-05T12:35:57ZengNature PortfolioNature Communications2041-17232024-12-0115111310.1038/s41467-024-55334-3Continuous decoupled redox electrochemical CO2 captureTao Liu0Yunpeng Wang1Yifan Wu2Wenchuan Jiang3Yuchao Deng4Qing Li5Cheng Lan6Zhiyu Zhao7Liangyu Zhu8Dongsheng Yang9Timothy Noël10Heping Xie11State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University & Shenzhen UniversityGuangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, College of Civil and Transportation Engineering, Shenzhen UniversityState Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University & Shenzhen UniversityInstitute of New Energy and Low-Carbon Technology, Sichuan UniversityInstitute of New Energy and Low-Carbon Technology, Sichuan UniversityInstitute of New Energy and Low-Carbon Technology, Sichuan UniversityInstitute of New Energy and Low-Carbon Technology, Sichuan UniversityInstitute of New Energy and Low-Carbon Technology, Sichuan UniversityGuangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, College of Civil and Transportation Engineering, Shenzhen UniversityGuangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, College of Civil and Transportation Engineering, Shenzhen UniversityVan’t Hoff Institute for Molecular Sciences, University of AmsterdamState Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University & Shenzhen UniversityAbstract Electrochemical CO2 capture driven by renewable electricity holds significant potential for efficient decarbonization. However, the widespread adoption of this approach is currently limited by issues such as instability, discontinuity, high energy demand, and challenges in scaling up. In this study, we propose a scalable strategy that addresses these limitations by transforming the conventional single-step electrochemical redox reaction into a stepwise electrochemical-chemical redox process. Specifically, the hydrogen evolution reaction (HER) at the cathode and the oxidation of a redox carrier at the anode are employed to modulate the pH of the electrolyte, thereby facilitating effective CO2 capture. By decoupling the electrochemical swing for CO2 capture from redox carrier regeneration in both temporal and spatial domains, this approach mitigates unwanted side reactions and enhances system stability. Our results demonstrate a stable CO2 capture process sustained for over 200 h, with a electrical work of 49.16 kJe mol-1 CO2 at a current density of 10 mA cm-2. Furthermore, a scaled-up system capable of producing approximately 0.4 kg of pure CO2 per day maintained stable operation for 72 h, highlighting the potential feasibility of this method for large-scale decarbonization applications.https://doi.org/10.1038/s41467-024-55334-3 |
| spellingShingle | Tao Liu Yunpeng Wang Yifan Wu Wenchuan Jiang Yuchao Deng Qing Li Cheng Lan Zhiyu Zhao Liangyu Zhu Dongsheng Yang Timothy Noël Heping Xie Continuous decoupled redox electrochemical CO2 capture Nature Communications |
| title | Continuous decoupled redox electrochemical CO2 capture |
| title_full | Continuous decoupled redox electrochemical CO2 capture |
| title_fullStr | Continuous decoupled redox electrochemical CO2 capture |
| title_full_unstemmed | Continuous decoupled redox electrochemical CO2 capture |
| title_short | Continuous decoupled redox electrochemical CO2 capture |
| title_sort | continuous decoupled redox electrochemical co2 capture |
| url | https://doi.org/10.1038/s41467-024-55334-3 |
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