标题：High activity and durability of novel perovskite electrocatalysts for water oxidation
作者：Zhou, Wei;Zhao, Mingwen;Liang, Fengli;Smith, Sean C.;Zhu, Zhonghua
作者机构：[Zhou, W] State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing Tech University, No. 更多
通讯作者地址：[Zhou, W]Nanjing Tech Univ, Coll Chem & Chem Engn, State Key Lab Mat Oriented Chem Engn, 5 Xin Mofan Rd, Nanjing 210009, Peoples R China.
摘要：Development of highly active and cost-effective electrocatalysts is central to the large-scale electrolysis of water for renewable energy generation. Perovskite oxides are a group of promising candidates to lower the oxygen evolution reaction (OER) barriers in water splitting and further improvement of their activity and durability is an important objective. Here we report scandium and niobium cation (Sc3+ and Nb5+) doped strontium cobaltite perovskites (SrScxNbyCo1-x-yO3-delta) as a family of highly active and durable electrocatalysts for the OER in alkaline solution. These perovskites not only manifest up to a factor of 50 increase of the intrinsic activity compared to the gold-standard OER electrocatalysts (such as IrO2 and RuO2) and a factor of 5.8 enhancement to the perovskite-Ba0.5Sr0.5Co0.8Fe0.2O3-delta at an overpotential of 0.35 V, but also, more importantly, show excellent durability in alkaline solutions under operation.