利用膜电极组件中的阳离子效应进行CO2还原的策略和挑战。

IF 2.2 3区 化学 Q3 CHEMISTRY, PHYSICAL
Yanhui Sun, Xuemei Du, Honghao Fan, Jinhua Ye, Lequan Liu
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引用次数: 0

摘要

膜电极组件(MEA)系统中的电催化CO2还原是一项很有前途的技术,可以将CO2直接传输到催化剂层并降低欧姆电阻。虽然电解质阳离子已被证明可以有效地提高CO2RR的速率和选择性,但它们在无电解质的MEA电解槽中的实施存在重大挑战。本概念综述探讨了在MEA配置中利用阳离子的关键策略,将其分为三种方法:(1)在催化剂层上固定碱金属阳离子,(2)在阴极上结合有机阳离子,(3)减少气体扩散层上的盐沉淀。本文旨在通过总结面临的挑战和提出的策略,为开发更有效的阳离子利用方法和基于mea的CO2减排系统的未来研究提供指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Strategies and Challenges of Utilizing Cation Effects in Membrane Electrode Assemblies for CO2 Reduction.

Electrocatalytic CO2 reduction in membrane electrode assembly (MEA) systems is a promising technology, enabling direct CO2 transport to the catalyst layers and reducing ohmic resistance. While electrolyte cations are demonstrated to effectively enhance the rate and the selectivity of electrochemical reduction of CO2, their implementation in electrolyte-free MEA electrolyzers faces significant challenges. This concept review examines key strategies for utilizing cations in MEA configurations, categorizing them into three methods: 1) incorporation of alkali metal cations into catalyst layers, 2) integration of organic cations into the cathode, and 3) mitigation of salt precipitation on the gas diffusion layers. By summarizing the challenges and proposed strategies, this review aims to provide guidance for the development of more efficient cation utilization approaches and future research in MEA-based CO2 reduction systems.

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来源期刊
Chemphyschem
Chemphyschem 化学-物理:原子、分子和化学物理
CiteScore
4.60
自引率
3.40%
发文量
425
审稿时长
1.1 months
期刊介绍: ChemPhysChem is one of the leading chemistry/physics interdisciplinary journals (ISI Impact Factor 2018: 3.077) for physical chemistry and chemical physics. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies. ChemPhysChem is an international source for important primary and critical secondary information across the whole field of physical chemistry and chemical physics. It integrates this wide and flourishing field ranging from Solid State and Soft-Matter Research, Electro- and Photochemistry, Femtochemistry and Nanotechnology, Complex Systems, Single-Molecule Research, Clusters and Colloids, Catalysis and Surface Science, Biophysics and Physical Biochemistry, Atmospheric and Environmental Chemistry, and many more topics. ChemPhysChem is peer-reviewed.
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