Boosting Lattice Oxygen Oxidation of Perovskite to Efficiently Catalyze Oxygen Evolution Reaction by FeOOH Decoration  

作　　者：Jia-Wei Zhao Cheng-Fei Li Zi-Xiao Shi Jie-Lun Guan Gao-Ren Li 

机构地区：[1]MOE Laboratory of Bioinorganic and Synthetic Chemistry,The Key Lab of Low-Carbon Chemistry&Energy Conservation of Guangdong Province,School of Chemistry,Sun Yat-sen University,Guangzhou 510275,China

出　　处：《Research》2020年第1期1176-1190,共15页研究（英文）

基　　金：Financial support for this work was provided by the National Basic Research Program of China(2016YFA0202603);NSFC(21821003 and 91645104);Science and Technology Program of Guangzhou(201704030019);Natural Science Foundation of Guangdong Province(2017A010103007);Guangdong Science and Technology Innovation Leading Talent Fund(2016TX03N187).

摘　　要：In the process of oxygen evolution reaction(OER)on perovskite,it is of great significance to accelerate the hindered lattice oxygen oxidation process to promote the slow kinetics of water oxidation.In this paper,a facile surface modification strategy of nanometerscale iron oxyhydroxide(FeOOH)clusters depositing on the surface of LaNiO_(3)(LNO)perovskite is reported,and it can obviously promote hydroxyl adsorption and weaken Ni-O bond of LNO.The above relevant evidences are well demonstrated by the experimental results and DFT calculations.The excellent hydroxyl adsorption ability of FeOOH-LaNiO_(3)(Fe-LNO)can obviously optimize OH-filling barriers to promote lattice oxygen-participated OER(LOER),and the weakened Ni-O bond of LNO perovskite can obviously reduce the reaction barrier of the lattice oxygen participation mechanism(LOM).Based on the above synergistic catalysis effect,the Fe-LNO catalyst exhibits a maximum factor of 5 catalytic activity increases for OER relative to the pristine perovskite and demonstrates the fast reaction kinetics(low Tafel slope of 42mVdec^(-1))and superior intrinsic activity(TOFs of~40 O2 S^(-1)at 1.60V vs.RHE).

关 键 词：PEROVSKITE Oxygen KINETICS 

分 类 号：O64[理学—物理化学]