Hu Xin-Ming, Liang Hong-Qing, Rosas-Hernández Alonso, Daasbjerg Kim
Environment Research Institute, Shandong University, Qingdao, 266237, China.
Key Lab of Adsorption and Separation Materials & Technologies of Zhejiang Province, MOE Engineering Research Center of Membrane and Water Treatment, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058, China.
Chem Soc Rev. 2025 Feb 3;54(3):1216-1250. doi: 10.1039/d4cs00480a.
The excessive emission of CO has led to severe climate change, prompting global concern. Capturing CO and converting it through electrochemistry into value-added products represent promising approaches to mitigating CO emissions and closing the carbon cycle. Traditionally, these two processes have been performed independently, involving multiple steps, high energy consumption, and low efficiency. Recently, the electrochemical conversion of captured CO, which integrates the capture and conversion processes (also referred to as electrochemically reactive CO capture), has garnered increasing attention. This integrated approach bypasses the energy-intensive steps involved in the traditional independent process, including CO release, purification, compression, transportation, and storage. In this review, we discuss recent advances in the electrochemical conversion of captured CO, focusing on four key aspects. First, we introduce various capture media, emphasizing the thermodynamic aspects of carbon capture and their implications for integration with electrochemical conversion. Second, we discuss product control mediated by the selection of different catalysts, highlighting the connections between the conversion of captured CO and gas-fed CO. Third, we examine the effect of reactor systems and operational conditions on the electrochemical conversion of captured CO, shedding light on performance optimization. Finally, we explore real integration systems for CO capture and electrochemical conversion, revealing the potential of this new technology for practical applications. Overall, we provide insights into the existing challenges, potential solutions, and thoughts on opportunities and future directions in the emerging field of electrochemical conversion of captured CO.
一氧化碳的过量排放导致了严重的气候变化，引发了全球关注。捕获一氧化碳并通过电化学方法将其转化为增值产品是减少一氧化碳排放和闭合碳循环的有前景的方法。传统上，这两个过程是独立进行的，涉及多个步骤、高能耗和低效率。最近，将捕获和转化过程整合在一起的捕获一氧化碳的电化学转化（也称为电化学反应性一氧化碳捕获）受到了越来越多的关注。这种整合方法绕过了传统独立过程中涉及的高能耗步骤，包括一氧化碳的释放、纯化、压缩、运输和储存。在这篇综述中，我们讨论了捕获一氧化碳的电化学转化的最新进展，重点关注四个关键方面。第一，我们介绍了各种捕获介质，强调了碳捕获的热力学方面及其与电化学转化整合的意义。第二，我们讨论了通过选择不同催化剂介导的产物控制，突出了捕获一氧化碳的转化与气体进料一氧化碳转化之间的联系。第三，我们研究了反应器系统和操作条件对捕获一氧化碳的电化学转化的影响，以阐明性能优化。最后，我们探索了用于一氧化碳捕获和电化学转化的实际整合系统，揭示了这项新技术在实际应用中的潜力。总体而言，我们深入探讨了捕获一氧化碳的电化学转化这一新兴领域中存在的挑战、潜在解决方案以及关于机遇和未来方向的思考。
