First Author:Zejun Sun,Wenjuan Xu
Correspondence Author:Hong-bin Sun, Qionglin Liang,Yang Yang
Co author:Wang, Yiming
Title of Paper:Organophosphine ligand derived sandwich-structural electrocatalyst for oxygen evolution reaction
Journal:Journal of Energy Chemistry
Volume:70
Impact Factor:14.0
DOI Number:10.1016/j.jechem.2022.02.005
Institution:Department of Chemistry, Northeastern University
Teaching and Research Group:物理化学
Place of Publication:PEOPLES R CHINA
Summary: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:2095-4956
Translation or Not:No