Iron-doped bimetal phosphide electrocatalyst and preparation method and application thereof

A phosphide electro-bimetallic technology is applied in the field of electrocatalysis to achieve the effect of increasing the specific surface area, strong repeatability and high activity

Active Publication Date: 2019-01-11
合肥九州龙腾科技成果转化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are relatively few studies on iron-doped metal phosphide electrocatalysts, and key scientific and technical issues such as the structure-activity relationship between the composition structure and electrocatalytic performance, and the optimal design of the structure need to be resolved urgently.

Method used

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  • Iron-doped bimetal phosphide electrocatalyst and preparation method and application thereof
  • Iron-doped bimetal phosphide electrocatalyst and preparation method and application thereof
  • Iron-doped bimetal phosphide electrocatalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Iron-doped nickel-cobalt-phosphorus bimetallic phosphide (Ni 1 co 0.8 Fe 0.2 Preparation of P-NF):

[0027] The nickel foam was ultrasonically cleaned with 3M hydrochloric acid, deionized water, acetone and ethanol in sequence for 30 minutes, and then dried at 60°C for 12 hours.

[0028] Weigh 0.582g Ni(NO 3 ) 2 ·6H 2 O, 0.4656g Co(NO 3 ) 2 ·6H 2 O, 0.1616g Fe(NO 3 ) 3 9H 2 O, 0.592NH 4 F and 1.2g urea were added to 80mL deionized water and stirred for 30 minutes to obtain precursor solution A (Ni:Co=1:0.8); put 2×5 (cm) foamed nickel into precursor solution A, transfer Into a 100mL reactor, hydrothermally reacted at 90°C for 9h to obtain the reddish-brown product Ni 1 co 0.8 Fe 0.2 -Pre-NF: Take out the nickel foam, wash with water and alcohol, and dry at 60°C for 12 hours.

[0029] Weigh NaH 2 PO 2 Placed in a crucible, located upstream of the nitrogen gas flow, the Ni produced above 1 co 0.8 Fe 0.2 -Pre-NF is placed in the crucible, located downs...

Embodiment 2

[0031] The preparation method of this electrocatalytic material is basically the same as Example 1, the difference is: change Co(NO 3 ) 2 ·6H 2 The amount of O added makes Ni:Co=1:1, without adding Fe(NO 3 ) 3 9H 2 O, the material is named Ni 1 co 1 P-NF.

Embodiment 3

[0033] The preparation method of this electrocatalytic material is basically the same as that of Example 1, the difference is: Co(NO 3 ) 2 ·6H 2 The mass of O is 0.291g, Fe(NO 3 ) 3 9H 2 The mass of O is 0.404 g (Ni:Co:Fe=1:0.5:0.5). The material is named Ni 1 co 0.5 Fe 0.5 P-NF.

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Abstract

The invention belongs to the technical field of electrocatalysis and particularly relates to an iron-doped bimetal phosphide electrocatalyst and a preparation method and application thereof. A hydroxide precursor synthesized by a hydrothermal reaction undergoes a phosphating reaction at a low temperature to produce a Ni1CoxFeyP nanosheet array electrocatalyst. The bimetal phosphide has low chargetransfer resistance and a reaction barrier for a hydrogen evolution reaction and has superior performances in the electrocatalytic hydrogen evolution reaction. The catalyst has a low cost. The preparation method is easy to operate and has simple processes. The electrocatalyst has excellent catalytic performances and provides the basic application research for the material in the field of electrocatalysis.

Description

technical field [0001] The invention belongs to the technical field of electrocatalysis, and in particular relates to a self-supporting iron-doped bimetallic phosphide electrocatalyst with high-performance electrochemical water splitting and its preparation method and application. technical background [0002] With the continuous consumption of fossil fuels, in order to meet today's huge energy demand, various new energy output plans have attracted extensive attention. As a clean energy without any pollution, hydrogen energy is expected to become the most effective substitute for fossil fuels. Electrochemical water splitting to produce hydrogen (hydrogen evolution reaction, HER) has great application prospects in the development of chemical energy storage technology due to its high efficiency, environmental friendliness, high gas purity and strong adaptability to energy fluctuations. In order to further reduce the overpotential of water splitting, reduce the energy consumed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10C25B1/04C25B11/03C25B11/06
CPCB01J27/24B01J35/0033B01J35/1004C25B1/04C25B11/031C25B11/075Y02E60/36
Inventor 陈敏齐越姜德立徐箐李娣孟素慈
Owner 合肥九州龙腾科技成果转化有限公司
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