Transition metal embedded porous nitrogen-phosphorus-doped carbon material and preparation method and application thereof

Abstract

The invention provides a transition metal embedded porous nitrogen-phosphorus-doped carbon material, employing agar as a carbon source, metal ions as a fixing agent, and EDTMPA (ethylene diamine tetramethylene phosphoric acid) as a nitrogen and phosphorus source; the porous nitrogen-phosphorus-doped carbon material prepared has co-existing microscopic and mesoscopic structures and metal particles evenly distributed in a carbon carrier. Compared with the prior art, the preparation method according to the invention is simple, the cost of raw materials is low, nitrogen and phosphorus doping efficiency can be improved effectively, the specific surface area of the catalyst nanoparticles can be enlarged effectively, and the prepared porous nitrogen-phosphorus-doped carbon material has high surface active area and high graphitizing degree, is capable of increasing current intensity when the catalyst engages in catalytic reaction, and has excellent electrocatalytic activity and fast dynamical progress.

Description

technical field [0001] The invention discloses a transition metal-embedded porous nitrogen-phosphorus-doped carbon material and a preparation method and application thereof, belonging to the technical field of doped carbon nanometer materials. Background technique [0002] With the increasing demand for energy, people's attention to renewable energy is gradually increasing. As a renewable clean energy with high energy density, hydrogen is expected to replace fossil fuels as a new energy source. Considering the cost and purity of hydrogen production, the most effective way is photolysis of water. However, the production of hydrogen is determined by its key half-reaction, the oxygen evolution reaction (OER). OER is a process with extremely slow kinetics, which requires catalysts to accelerate the reaction and reduce the overpotential, so as to obtain higher energy conversion efficiency. In the past few decades, noble metal catalysts such as RuO 2 , IrO 2 They are consider...

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Problems solved by technology

[0004] However, at present, there are still some defects in the relevant research in the prior art, such as the low doping efficiency of nitrogen and phosphorus, and the poor electrocatalytic performance of the prepared materials, etc.

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