First Author:Zejun Sun,Wenjuan Xu
Correspondence Author:Hong-bin Sun, Qionglin Liang,Yang Yang
Co author:Wang, Yiming
Journal:Journal of Energy Chemistry
Volume:70
Impact Factor:14.0
DOI number:10.1016/j.jechem.2022.02.005
Affiliation of Author(s):Department of Chemistry, Northeastern University
Teaching and Research Group:物理化学
Place of Publication:PEOPLES R CHINA
Abstract: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 phosphorus containing 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 PH3 or dangerous phosphorus vapor. Here, a strat egy for in-situ formation of FePO4 embedded in P-doped carbon 2D nano film (FePO4/PdC) is developed using a highly integrated precursor, which is a small molecular organophosphine ligand, 1,10bis (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. FePO4/PdC encapsulated the ZIF-67 derived Co/N-doped carbon matrix (CoNC) to form a sandwich structure FePO4/PdC@CoNC. The constructed catalyst shows good per formance for OER, requiring an overpotential of only 297 mV to deliver 600 mA/cm2 with a Tafel slope of 42.7 mVdec 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 con structing P-containing catalysts overcomes the demand for additiona
Key Words:Organophosphorus Ligand,Synchronous Synthesis,FePO4,p-doped Caibon 2Dnano film,Oxygen evolution reaction
Document Code:WOS:000781651100009
Discipline:Natural Science
First-Level Discipline:Chemistry
Page Number:75-83
ISSN No.:2095-4956
Translation or Not:no