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Recent Advances in Breaking Scaling Relations for Effective Electrochemical Conversion of CO_2

机译：突破缩放关系的最新进展，以实现有效电化学转换的CO_2

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The increasing concentration of CO2 in the atmosphere, and the resulting environmental problems, call for effective ways to convert CO2 into valuable fuels and chemicals for a sustainable carbon cycle. In such a context, CO2 electrocatalytic reduction has been hotly studied due to the merits of ambient operational conditions and easy control of the reaction process by changing the applied potential. Among the various systems studied, Cu and Au are found to possess the highest Faradaic efficiency toward cathodic electrocatalytic conversion of CO2 to hydrocarbons and CO, respectively. However, both of them suffer from large overpotentials owing to the limitations imposed by the scaling relations between the carbonaceous adsorbates. Therefore, establishing how to break the scaling relations for effective electrochemical conversion of CO2 has become an urgent research topic. The recent advances in breaking the adsorption energy scaling relations to reduce the overpotential, improve the catalytic activity and suppress the side reaction, are summarized. The origin of the scaling relations, their negative effects on CO2 electrocatalysis, and the strategies for breaking the limitations are discussed. Some suggestions for future study are also proposed.
机译：大气中的CO2浓度增加，以及所产生的环境问题，呼吁将CO2转化为可持续碳循环的有价值的燃料和化学品的有效方法。在这种情况下，由于环境运行条件的优点和通过改变施加的电位而易于控制反应过程，已经热烈研究了CO2电催化还原。在研究的各种系统中，发现Cu和Au分别具有朝向烃和CO的阴极电催化转化的最高野生效率。然而，由于碳质吸附物之间的缩放关系施加的限制，它们都遭受了大量的过电位。因此，建立如何打破缩放关系以实现二氧化碳的有效电化学转换已成为一种紧急的研究主题。总结了破坏吸附能量缩放关系以减少过电位，改善催化活性和抑制副反应的研究进展。讨论了缩放关系的起源，对二氧化碳电催化的负面影响，以及打破局限性的策略。还提出了对未来研究的一些建议。

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