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Bi-metal phosphide electrocatalyst as well as preparation method thereof and application thereof

A phosphide electric and bimetallic technology, applied in metal material coating process, electrode, electrolysis process, etc., to achieve the effect of lowering reaction barrier, improving electron transport and strong repeatability

Inactive Publication Date: 2018-09-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few studies on bimetallic 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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  • Bi-metal phosphide electrocatalyst as well as preparation method thereof and application thereof
  • Bi-metal phosphide electrocatalyst as well as preparation method thereof and application thereof
  • Bi-metal phosphide electrocatalyst as well as preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Nickel-manganese-phosphorus bimetallic phosphide (Ni 2 Mn 1 P-NF) preparation:

[0032] The nickel foam was ultrasonically cleaned with acetone, hydrochloric acid with a concentration of 3M, ethanol and deionized water for 30 minutes, and then dried at 60°C.

[0033] Weigh 0.118g NiCl 2 ·6H 2 O, and 0.0495g MnCl 2 ·4H 2 O, add 80mL deionized water to get precursor solution A (Ni:Mn=2:1); weigh out 0.0872g NaCl, 0.6308g HMT, 56.6μL H 2 O 2 (30w%) into solution A, stir for 30 minutes, put 2×1 (cm) foamed nickel into solution A, transfer to a 100mL reaction kettle, hydrothermally react at 100°C for 12h to obtain the khaki product NiMn-LDH -NF; Take out the foamed nickel, wash with water and alcohol, and dry.

[0034] Weigh NaH 2 PO 2 Place it on the upstream of the semi-closed crucible, place the NiMn-LDH-NF prepared above at the downstream of the semi-closed crucible, NaH 2 PO 2 The ratio of the amount to NiMn-LDH-NF is 5mol:1mol. The crucible is transferred to an automatically ...

Embodiment 2

[0036] The preparation method of the electrocatalytic material is basically the same as in Example 1, except that: NiCl 2 ·6H 2 The mass of O is 0.1783 g (Ni:Mn=3:1). The material is named Ni 3 Mn 1 P-NF.

Embodiment 3

[0038] The preparation method of the electrocatalytic material is basically the same as in Example 1, except that: NiCl 2 ·6H 2 The mass of O is 0.0594 g (Ni:Mn=1:1). The material is named Ni 1 Mn 1 P-NF.

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PUM

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Abstract

The invention belongs to the field of electrocatalysts, and specifically relates to a preparation method and application of a mesoporous bi-metal phosphide electrocatalyst for electrochemically decomposing water to generate hydrogen with high performance. A hydroxide precursor is synthesized through hydrothermal reaction and is further subjected to low-temperature phosphating reaction to obtain aNixMn1P porous nanosheet array electrocatalyst. The series of bi-metal phosphides have relatively low charge transfer resistance and reaction barrier of hydrogen evolution reaction, and have excellentperformances in electro-catalytic hydrogen evolution reaction. The catalyst is low in cost, is simple and convenient in operation, is simple in process, is excellent in catalysis performance, and provides basic application research, in the electro-catalysis field, of the materials.

Description

Technical field [0001] The invention belongs to the field of electrocatalysts, and specifically relates to a preparation method and application of a mesoporous bimetal phosphide electrocatalyst for high-performance electrochemical decomposition of water to produce hydrogen. technical background [0002] Green energy is regarded as the most ideal energy carrier and energy storage method due to its clean, pollution-free, high-efficiency, storage and transportation advantages. Hydrogen evolution reaction (HER) technology from electrolysis of water has the advantages of high efficiency, environmental friendliness, high purity of gas production, and strong adaptability to energy fluctuations, and has great application prospects in the development of chemical energy storage technology. Pt, Pd and other precious metals and their oxides have excellent catalytic activity for electrocatalytic water splitting, but its scarcity and high cost limit its wide application. Exploring high-effici...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04C23C18/12
CPCC23C18/1204C23C18/1241C23C18/1295C25B1/04C25B11/04Y02E60/36
Inventor 姜德立马婉霞李娣杨荣李丰华张栋琪
Owner JIANGSU UNIV
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