Organophosphine ligand derived sandwich-structural electrocatalyst for oxygen evolution reaction  

作　　者：Zejun Sun Wenjuan Xu Liutao Guo Qiang Han Jianyi Gao Jiaping Wang Yanru Feng Chengrui Li Qionglin Liang Hong-bin Sun Yang Yang 

机构地区：[1]Department of Chemistry,Northeastern University,Shenyang 110819,Liaoning,China [2]Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology(Ministry of Education),Department of Chemistry,Center for Synthetic and Systems Biology,Tsinghua University,Beijing 100084,China [3]Astronaut Centre of China,Beijing 100094,China [4]Nano Science Technology Center,Department of Materials Science and Engineering,Department of Chemistry,Renewable Energy and Chemical Transformation Cluster University of Central Florida,Orlando,FL 32826,United States

出　　处：《Journal of Energy Chemistry》2022年第7期74-83,I0003,共11页能源化学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(21872020);the 1226 Engineering Health Major Project(BWS17J028,AWS16J018);the Fundamental Research Funds for the Central Universities(N180705004)。

摘　　要：The synchronous construction of metal phosphate and phosphorus-doped carbon structures is of great significance to innovate the design,synthesis,and application of catalysts,as these phosphoruscontaining composite materials have shown a remarkable contribution to electrocatalysts.However,their preparation procedure generally involves using large amounts of excess phosphorus sources for phosphorization,which inevitably release poisonous PH_(3) or dangerous phosphorus vapor.Here,a strategy for in-situ formation of FePO_(4) embedded in P-doped carbon 2D nano film(FePO_(4)/PdC)is developed using a highly integrated precursor,which is a small molecular organophosphine ligand,1,1’bis(diphenylphosphine)ferrocene(DPPF).The multi-source precursor DPPF that contains Fe,P,and C is molecular-vapor-deposited on the nickel foam(NF)supported ZIF-67 nanosheets to obtain the composite catalyst,namely DPPF-500/ZIF-67/NF.FePO_(4)/PdC encapsulated the ZIF-67 derived Co/N-doped carbon matrix(Co NC)to form a sandwich structure FePO_(4)/[e-mail] constructed catalyst shows good performance for OER,requiring an overpotential of only 297 m V to deliver 600 m A/cm^(2) with a Tafel slope of 42.7 m V dec^(-1).DFT calculations demonstrate that the synergistic effects between the metal active center and P-doped carbon film reduce the energy barriers and improve electron transport.This method of constructing P-containing catalysts overcomes the demand for additional P sources to realize eco-friendly fabrication and yields a unique structure with good catalytic activity.

关 键 词：Organophosphorus ligand Synchronous Synthesis FePO_(4) P-doped Carbon 2D nano film Oxygen evolution reaction 

分 类 号：TQ116.2[化学工程—无机化工] TQ426[理学—物理化学] O641.4[理学—化学]