Scaling the Electrochemical Conversion of CO2 to CO

IF 19.3 1区材料科学 Q1 CHEMISTRY, PHYSICAL

ACS Energy Letters Pub Date : 2024-05-17 DOI:10.1021/acsenergylett.4c00936

Kai Han, Ben C. Rowley, Maarten P. Schellekens, Sander Brugman, Michiel P. de Heer, Lucas P. S. Keyzer and Paul J. Corbett*,

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Abstract

The key challenges for the industrial electrolysis of CO₂ into CO are the low CO₂ conversion, restricted scale-up, and poor long-term operation. Systematic process design and electrolyzer engineering are essential for addressing these challenges and exploiting the full potential of commercial CO₂ electrolysis. In this study, we employed a bipolar membrane (BPM) in a pressurized electrolyzer with a 25 cm² active area to achieve a maximum FE_CO of 93% with a cell voltage of 3.5 V and a maximum CO₂ single-pass conversion of 70% without detecting CO₂ crossover. In addition, we upscaled the system active area from 5 to 250 cm² and showed that this increase did not result in a loss of performance. In particular, the performance on the pressurized 100 cm² electrolyzer established an average FE_CO of 85% with a CO₂ single-pass conversion of 60% for over 120 h. This provides practical approaches for transitioning from laboratory-scale to industrial-scale electrolysis.

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将二氧化碳电化学转化为 CO

将二氧化碳电解为一氧化碳的工业化生产面临的主要挑战是二氧化碳转化率低、规模化生产受限以及长期运行不佳。系统的工艺设计和电解槽工程对于应对这些挑战和充分挖掘商业 CO2 电解的潜力至关重要。在本研究中，我们在活性面积为 25 cm2 的加压电解槽中采用了双极膜 (BPM)，在电池电压为 3.5 V 时，FECO 的最大值为 93%，二氧化碳单程转化率的最大值为 70%，且未检测到二氧化碳交叉。此外，我们还将系统的有效面积从 5 平方厘米扩大到 250 平方厘米，结果表明，这种扩大不会导致性能下降。特别是在加压的 100 平方厘米电解槽上，120 多小时的平均 FECO 为 85%，二氧化碳单程转化率为 60%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment

CiteScore

31.20

自引率

5.00%

发文量

469

审稿时长

1 months

期刊介绍： ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format. ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology. The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.

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