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Recent Progress on Multimetal Oxide Catalysts for the Oxygen Evolution Reaction

机译：氧析出反应的多金属氧化物催化剂的最新研究进展

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摘要

Hydrogen is a promising alternative fuel for efficient energy production and storage, with water splitting considered one of the most clean, environmentally friendly, and sustainable approaches to generate hydrogen. However, to meet industrial demands with electrolysis-generated hydrogen, the development of a low-cost and efficient catalyst for the oxygen evolution reaction (OER) is critical, while conventional catalysts are mostly based on precious metals. Many studies have thus focused on exploring new efficient nonprecious-metal catalytic systems and improving the understandings on the OER mechanism, resulting in the design of catalysts with superior activity compared with that of conventional catalysts. In particular, the use of multimetal rather than single-metal catalysts is demonstrated to yield remarkable performance improvement, as the metal composition in these catalysts can be tailored to modify the intrinsic properties affecting the OER. Herein, recent progress and accomplishments of multimetal catalytic systems, including several important groups of catalysts: layered hydroxide, spinel, and amorphous metal oxides along with the theoretical principles of activity enhancement in multimetal systems are reviewed. Finally, this is concluded by discussing remaining challenges to achieve further improvements of OER catalyst activities.
机译：氢是一种有前途的替代燃料，可用于有效的能源生产和存储，而水分解被认为是最清洁，环保和可持续的氢生成方法之一。但是，为了满足电解产生的氢气的工业需求，开发低成本高效的氧气析出反应（OER）催化剂至关重要，而常规催化剂主要基于贵金属。因此，许多研究都集中在探索新型有效的非贵金属催化体系和增进对OER机理的理解上，从而设计出比传统催化剂具有更高活性的催化剂。特别是，已证明使用多金属而不是单金属催化剂可显着改善性能，因为可以调整这些催化剂中的金属组成以改变影响OER的固有性能。在此，综述了多金属催化体系的最新进展和成就，包括几类重要的催化剂：层状氢氧化物，尖晶石和非晶态金属氧化物，以及在多金属体系中提高活性的理论原理。最后，通过讨论实现OER催化剂活性的进一步改善所面临的挑战来得出结论。

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