Microwave shock motivating the Sr substitution of 2D porous GdFeO_(3) perovskite for highly active oxygen evolution  

作　　者：Jinglin Xian Huiyu Jiang Zhiao Wu Huimin Yu Kaisi Liu Miao Fan Rong Hu Guangyu Fang Liyun Wei Jingyan Cai Weilin Xu Huanyu Jin Jun Wan 

机构地区：[1]State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing&Finishing,Wuhan Textile University,Wuhan 430200,Hubei,China [2]Future Industries Institute,STEM,University of South Australia,Adelaide,SA 5095,Australia [3]Institute for Sustainability,Energy and Resources,The University of Adelaide,Adelaide,SA 5005,Australia

出　　处：《Journal of Energy Chemistry》2024年第1期232-241,I0006,共11页能源化学（英文版）

基　　金：financial support from the National Natural Science Foundation of China (52203070);the Open Fund of State Key Laboratory of New Textile Materials and Advanced Processing Technologies (FZ2022005);the Open Fund of Hubei Key Laboratory of Biomass Fiber and Ecological Dyeing and Finishing (STRZ202203);the financial support provided by the China Scholarship Council (CSC)Visiting Scholar Program;financial support from Institute for Sustainability,Energy and Resources,The University of Adelaide,Future Making Fellowship,Australia。

摘　　要：The incorporation of partial A-site substitution in perovskite oxides represents a promising strategy for precisely controlling the electronic configuration and enhancing its intrinsic catalytic activity.Conventional methods for A-site substitution typically involve prolonged high-temperature processes.While these processes promote the development of unique nanostructures with highly exposed active sites,they often result in the uncontrolled configuration of introduced elements.Herein,we present a novel approach for synthesizing two-dimensional(2D)porous GdFeO_(3) perovskite with A-site strontium(Sr)substitution utilizing microwave shock method.This technique enables precise control of the Sr content and simultaneous construction of 2D porous structures in one step,capitalizing on the advantages of rapid heating and cooling(temperature~1100 K,rate~70 K s^(-1)).The active sites of this oxygen-rich defect structure can be clearly revealed through the simulation of the electronic configuration and the comprehensive analysis of the crystal structure.For electrocatalytic oxygen evolution reaction application,the synthesized 2D porous Gd_(0.8)Sr_(0.2)FeO_(3) electrocatalyst exhibits an exceptional overpotential of 294 mV at a current density of 10 mA cm^(-2)and a small Tafel slope of 55.85 mV dec^(-1)in alkaline electrolytes.This study offers a fresh perspective on designing crystal configurations and the construction of nanostructures in perovskite.

关 键 词：2D materials PEROVSKITE MICROWAVE ELECTROCATALYSIS Oxygen evolution reaction 

分 类 号：TQ426[化学工程] TQ116.2