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题名: Regulating p-block metals in perovskite nanodots for efficient electrocatalytic water oxidation
作者: Li, Bo-Quan;  Xia, Zi-Jing;  Zhang, Bingsen;  Tang, Cheng;  Wang, Hao-Fan;  Zhang, Qiang
发表日期: 2017-10-16
摘要: Water oxidation represents the core process of many sustainable energy systems, such as fuel cells, rechargeable metal-air batteries, and water splitting. Material surface defects with high-energy hanging bonds possess superb intrinsic reactivity, whose actual performance is limited by the dimension and conductivity of the electrocatalyst. Herein we propose a surface defect-rich perovskite electrocatalyst through a p-block metal regulation concept to achieve high performance for oxygen evolution. As a typical p-metal, Sn4+ dissolves from the solid phase from model SnNiFe perovskite nanodots, resulting in abundant surface defects with superior water oxidation performance. An oxygen pool model and a fusion-evolution mechanism are therefore proposed for the in-depth understanding of p-block metal regulation and the oxygen evolution reaction. The energy chemistry unveiled herein provides insights into water oxidation and helps to tackle critical issues in multi-electron oxygen electrocatalysis.
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Recommended Citation:
Li, Bo-Quan,Xia, Zi-Jing,Zhang, Bingsen,et al. Regulating P-block Metals In Perovskite Nanodots For Efficient Electrocatalytic Water Oxidation[J]. Nature Publishing Group,2017,8:-.

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