Recent advances in integrated capture and electrochemical conversion of CO2

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

MRS Communications Pub Date : 2024-07-09 DOI:10.1557/s43579-024-00575-y

Yongjun Kwon, Binhong Wu, Ning Zhang, David Hand, Tianyou Mou, Xue Han, Qiaowan Chang

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Abstract

Capturing and electrochemically converting carbon dioxide (CO₂) from industrial point sources, such as flue gas, is a promising approach to mitigate the greenhouse effect and protect the environment. However, these processes are characterized by high energy consumption and low energy efficiency, which need optimization. This prospective article provides a summary of the current strategies for capturing and electrochemically converting dilute CO₂ into valuable products. We will summarize strategies for capture and electrochemical reduction of CO₂ in a dilute stream, compare the advantages and disadvantages of using amines, membranes, alkaline solutions, and molten salts for CO₂ capture and conversion, and discuss the effects of CO₂ concentrations and typical impurities in flue gas (NO_x, SO_x, and O₂) on the performance of electrochemical CO₂ conversion. We will also provide an outlook on future opportunities for developing integrated processes for capturing and electrochemically converting CO₂ to valuable products.

Graphical abstract

Abstract Image

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二氧化碳综合捕集与电化学转化的最新进展

从工业点源（如烟道气）中捕捉二氧化碳（CO2）并将其进行电化学转化，是缓解温室效应和保护环境的一种可行方法。然而，这些工艺的特点是能耗高、能效低，需要优化。这篇前瞻性文章总结了当前捕获稀释二氧化碳并将其电化学转化为有价值产品的策略。我们将总结捕集和电化学还原稀薄气流中二氧化碳的策略，比较使用胺、膜、碱性溶液和熔盐捕集和转化二氧化碳的优缺点，并讨论二氧化碳浓度和烟气中典型杂质（氮氧化物、硫氧化物和二氧化硫）对电化学二氧化碳转化性能的影响。我们还将展望未来开发二氧化碳捕获和电化学转化为有价值产品的集成工艺的机遇。

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

MRS Communications MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

2.60

自引率

10.50%

发文量

166

审稿时长

>12 weeks

期刊介绍： MRS Communications is a full-color, high-impact journal focused on rapid publication of completed research with broad appeal to the materials community. MRS Communications offers a rapid but rigorous peer-review process and time to publication. Leveraging its access to the far-reaching technical expertise of MRS members and leading materials researchers from around the world, the journal boasts an experienced and highly respected board of principal editors and reviewers.