过渡金属氧化物催化析氧反应研究进展

Recent advance in transition metal oxide-based materials for oxygen evolution reaction electrocatalysts

利用可再生能源电解水制氢,是实现绿色氢能经济的必由之路。现阶段,电解水过程的阳极析氧反应过电位较高,催化剂性能不稳定,制约着该技术的工业化应用。使用经济高效的催化剂,可显著降低析氧过电位,提高电解水制氢过程的经济性和电能转化效率。在各类析氧催化剂材料中,过渡金属氧化物(TMOs)由于晶体结构多样、储量丰富、环境友好、易于制备以及活性较高等优点,受到了越来越多的关注。本文从活性和稳定性出发,总结分析了近年来过渡金属氧化物催化析氧反应的研究进展,并对其未来的发展提出了建议与展望。

Using renewable energy to electrolyze water to produce hydrogen is the only way to realize a green hydrogen economy.At present,the large-scale application of this technology is encumbered by the relatively low activity and stability of oxygen evolution reaction(OER)electrocatalysts.The use of cost-effective catalysts can significantly reduce the overpotential of oxygen evolution and improve the economics and power conversion efficiency of the hydrogen production process from electrolysis of water.Among the various candidates,the transition metal oxide-based(TMOs)materials show great prospects and receive ever-increasing research interests because of their diversified surface/bulk structures,natural enrichment,easy accessibility and environmental friendliness.In this review,the latest tactics aiming at enhancing activity via increasing the accessible active sites and promoting intrinsic activity have been summarized.In addition,with special emphasis on the long-term stability,the up-to-data strategies for elevating the stability are introduced.Finally,conclusions and perspectives are also presented.