Oxygen Evolution Reaction Electrocatalysis on Transition Metal Oxides and (Oxy)hydroxides: Activity Trends and Design Principles
Oxygen Evolution Reaction Electrocatalysis on Transition Metal Oxides and (Oxy)hydroxides: Activity Trends and Design Principles
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DOI：
10.1021/acs.chemmater.5b03148
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发表时间：
2015-11-24
影响因子：
8.6
通讯作者：
Boettcher, Shannon W.
中科院分区：
文献类型：
--
作者：
Burke, Michaela S.;Enman, Lisa J.;Boettcher, Shannon W.
较差的析氧反应（OER）催化能力限制了从水电解和光电解路线到大规模储能的H-2生产效率。尽管进行了近一个世纪的研究，但控制 OER 催化剂活性的因素仍不清楚。在本视角中，我们讨论了了解碱性介质中地球丰富的第一排过渡金属氧化物和（氧）氢氧化物的 OER 的最新进展。我们认为，与研究最相关的结构是热力学稳定的（羟基）氢氧化物，而不是晶体氧化物。我们讨论薄膜电化学微天平技术，以准确量化本征活性和原位电导率测量，以识别受电子传输限制的材料。我们强调了从普遍存在的电解质杂质中有意或无意添加的 Fe 阳离子对常见 OER 催化剂活性的巨大影响。我们发现了第一行过渡金属的新活性趋势，与现有的趋势相反，并提出了混合金属（羟基）氢氧化物的 OER 的新观点，说明了可能的设计原理和应用。
Poor oxygen evolution reaction (OER) catalysis limits the efficiency of H-2 production from water electrolysis and photoelectrolysis routes to large-scale energy storage. Despite nearly a century of research, the factors governing the activity of OER catalysts are not well understood. In this Perspective, we discuss recent advances in understanding the OER in alkaline media for earth-abundant, first-row, transition-metal oxides and (oxy)hydroxides. We argue that the most-relevant structures for study are thermodynamically stable (oxy)hydroxides and not crystalline oxides. We discuss thin-film electrochemical microbalance techniques to accurately quantify intrinsic activity and in situ conductivity measurements to identify materials limited by electronic transport. We highlight the dramatic effect that Fe cations added either intentionally or unintentionally from ubiquitous electrolyte impurities-have on the activity of common OER catalysts. We find new activity trends across the first-row transition metals, opposite of the established ones, and propose a new view of OER on mixed-metal (oxy)hydroxides that illustrates possible design principles and applications.