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Alloy Nanocatalysts for the Electrochemical Oxygen Reduction (ORR) and the Direct Electrochemical Carbon Dioxide Reduction Reaction (CO2RR)
Advanced Materials ( IF 27.4 ) Pub Date : 2018-12-20 , DOI: 10.1002/adma.201805617 Cheonghee Kim 1 , Fabio Dionigi 1 , Vera Beermann 1 , Xingli Wang 1 , Tim Möller 1 , Peter Strasser 1
Advanced Materials ( IF 27.4 ) Pub Date : 2018-12-20 , DOI: 10.1002/adma.201805617 Cheonghee Kim 1 , Fabio Dionigi 1 , Vera Beermann 1 , Xingli Wang 1 , Tim Möller 1 , Peter Strasser 1
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In the face of the global energy challenge and progressing global climate change, renewable energy systems and components, such as fuel cells and electrolyzers, which close the energetic oxygen and carbon cycles, have become a technology development priority. The electrochemical oxygen reduction reaction (ORR) and the direct electrochemical carbon dioxide reduction reaction (CO2RR) are important electrocatalytic processes that proceed at gas diffusion electrodes of hydrogen fuel cells and CO2 electrolyzers, respectively. However, their low catalytic activity (voltage efficiency), limited long‐term stability, and moderate product selectivity (related to their Faradaic efficiency) have remained challenges. To address these, suitable catalysts are required. This review addresses the current state of research on Pt‐based and Cu‐based nanoalloy electrocatalysts for ORR and CO2RR, respectively, and critically compares and contrasts key performance parameters such as activity, selectivity, and durability. In particular, Pt nanoparticles alloyed with transition metals, post‐transition metals and lanthanides, are discussed, as well as the material characterization and their performance for the ORR. Then, bimetallic Cu nanoalloy catalysts are reviewed and organized according to their main reaction product generated by the second metal. This review concludes with a perspective on nanoalloy catalysts for the ORR and the CO2RR, and proposes future research directions.
中文翻译：
用于电化学氧还原（ORR）和直接电化学二氧化碳还原反应（CO2RR）的合金纳米催化剂
面对全球能源挑战和全球气候变化的挑战，关闭高能氧气和碳循环的可再生能源系统和组件，例如燃料电池和电解池，已成为技术开发的重点。电化学氧还原反应（ORR）和直接电化学二氧化碳还原反应（CO 2 RR）是重要的电催化过程，其在氢燃料电池和CO 2的气体扩散电极上进行电解槽。然而，它们的低催化活性（电压效率），有限的长期稳定性和适度的产品选择性（与法拉第效率有关）仍然是挑战。为了解决这些问题，需要合适的催化剂。这篇综述阐述了ORR和CO 2的Pt和Cu基纳米合金电催化剂的研究现状RR分别严格地比较和对比了关键性能参数，例如活性，选择性和耐用性。特别是，讨论了与过渡金属，过渡后金属和镧系元素合金化的Pt纳米颗粒，以及ORR的材料表征及其性能。然后，根据第二种金属产生的主要反应产物，对双金属Cu纳米合金催化剂进行了审查和组织。本文以ORR和CO 2 RR的纳米合金催化剂为视角进行了总结，并提出了未来的研究方向。
更新日期：2018-12-20
中文翻译：
用于电化学氧还原（ORR）和直接电化学二氧化碳还原反应（CO2RR）的合金纳米催化剂
面对全球能源挑战和全球气候变化的挑战，关闭高能氧气和碳循环的可再生能源系统和组件，例如燃料电池和电解池，已成为技术开发的重点。电化学氧还原反应（ORR）和直接电化学二氧化碳还原反应（CO 2 RR）是重要的电催化过程，其在氢燃料电池和CO 2的气体扩散电极上进行电解槽。然而，它们的低催化活性（电压效率），有限的长期稳定性和适度的产品选择性（与法拉第效率有关）仍然是挑战。为了解决这些问题，需要合适的催化剂。这篇综述阐述了ORR和CO 2的Pt和Cu基纳米合金电催化剂的研究现状RR分别严格地比较和对比了关键性能参数，例如活性，选择性和耐用性。特别是，讨论了与过渡金属，过渡后金属和镧系元素合金化的Pt纳米颗粒，以及ORR的材料表征及其性能。然后，根据第二种金属产生的主要反应产物，对双金属Cu纳米合金催化剂进行了审查和组织。本文以ORR和CO 2 RR的纳米合金催化剂为视角进行了总结，并提出了未来的研究方向。
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