Progress and Perspectives of Electrochemical CO2 Reduction on Copper in Aqueous Electrolyte.,Chemical Reviews

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Progress and Perspectives of Electrochemical CO2 Reduction on Copper in Aqueous Electrolyte.
Chemical Reviews ( IF 51.4 ) Pub Date : 2019-05-22 , DOI: 10.1021/acs.chemrev.8b00705
Stephanie Nitopi ₁ , Erlend Bertheussen ₂ , Soren B Scott ₂ , Xinyan Liu ₁ , Albert K Engstfeld _{2,

3} , Sebastian Horch ₂ , Brian Seger ₂ , Ifan E L Stephens _{2,

4} , Karen Chan _{1,

5} , Christopher Hahn _{1,

5} , Jens K Nørskov _{1,

2,

5} , Thomas F Jaramillo _{1,

5} , Ib Chorkendorff ₂

Affiliation

To date, copper is the only heterogeneous catalyst that has shown a propensity to produce valuable hydrocarbons and alcohols, such as ethylene and ethanol, from electrochemical CO2 reduction (CO2R). There are variety of factors that impact CO2R activity and selectivity, including the catalyst surface structure, morphology, composition, the choice of electrolyte ions and pH, and the electrochemical cell design. Many of these factors are often intertwined, which can complicate catalyst discovery and design efforts. Here we take a broad and historical view of these different aspects and their complex interplay in CO2R catalysis on Cu, with the purpose of providing new insights, critical evaluations, and guidance to the field with regard to research directions and best practices. First, we describe the various experimental probes and complementary theoretical methods that have been used to discern the mechanisms by which products are formed, and next we present our current understanding of the complex reaction networks for CO2R on Cu. We then analyze two key methods that have been used in attempts to alter the activity and selectivity of Cu: nanostructuring and the formation of bimetallic electrodes. Finally, we offer some perspectives on the future outlook for electrochemical CO2R.

中文翻译：

电解液中铜电化学还原CO2的研究进展与展望。

迄今为止，铜是唯一显示出能够通过电化学还原CO2（CO2R）产生有价值的碳氢化合物和醇类（例如乙烯和乙醇）的非均相催化剂。影响CO2R活性和选择性的因素很多，包括催化剂的表面结构，形态，组成，电解质离子和pH的选择以及电化学电池的设计。这些因素中的许多因素通常是相互交织的，这会使催化剂的发现和设计工作变得复杂。在这里，我们对这些不同的方面及其在铜的CO2R催化中的复杂相互作用进行了广泛的历史考察，目的是就研究方向和最佳实践提供新的见解，关键的评估以及对该领域的指导。第一的，我们描述了已用于识别产物形成机理的各种实验探针和互补的理论方法，接下来，我们介绍了我们目前对Cu2 +上CO2R的复杂反应网络的理解。然后，我们分析了试图改变Cu的活性和选择性的两种关键方法：纳米结构化和双金属电极的形成。最后，我们对电化学CO2R的未来前景提供了一些见解。纳米结构和双金属电极的形成。最后，我们对电化学CO2R的未来前景提供了一些见解。纳米结构和双金属电极的形成。最后，我们对电化学CO2R的未来前景提供了一些见解。

更新日期：2019-05-22

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