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Inorganic light element doped nickel-based material and preparation method and application thereof

A light element, inorganic nickel technology, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of nickel-based materials such as the gap in activity of platinum, and achieve the effects of alleviating the scarcity of precious metal resources, good hydrogen evolution activity, and good stability

Inactive Publication Date: 2019-11-15
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a gap between the activity of nickel-based materials and platinum

Method used

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  • Inorganic light element doped nickel-based material and preparation method and application thereof
  • Inorganic light element doped nickel-based material and preparation method and application thereof
  • Inorganic light element doped nickel-based material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Synthesis of nickel nitride with nickel coordination polymer as precursor

[0037] Dissolve 0.6mmol nickel nitrate hexahydrate and 0.3g polyvinylpyrrolidone in 20mL deionized water to obtain solution A, dissolve 0.4mmol nickel potassium cyanide in 20mL deionized water to obtain precipitant B, put solution A on a stirrer and stir vigorously for 5min , slowly drop into the precipitant B, after the dropwise addition, continue to stir for 2min, then stand at room temperature for aging for 24h, centrifuge, wash, and vacuum freeze-dry to obtain the nickel coordination polymer precursor, place the nickel coordination polymer in a vacuum tube Calcined in an ammonia atmosphere at 450°C for 1 h to prepare nickel nitride nanoparticles.

[0038] Depend on figure 1 It can be seen that the nickel coordination polymer is a square sheet with an irregular shape of 100-200 nm. Depend on figure 2 It can be seen that after high-temperature ammonification, the nickel squares ...

Embodiment 2

[0042] Example 2: Synthesis of carbon-doped nickel using Ni-MOF74 as a precursor

[0043] Weigh 0.043g 2,5-dihydroxyterephthalic acid, 0.13g nickel nitrate, 0.007g salicylic acid, and 45ml of reaction kettle, in 18ml of ethanol:N,N-dimethylformamide:water=1 : 1:1 solution ultrasonically dissolved completely. The reaction kettle was placed in an oven at 120°C for 8 hours, centrifuged, washed, and vacuum-dried to obtain the Ni-MOF74 precursor. Ni-MOF74 was placed in a vacuum tube furnace and calcined at 450 °C for 1 h in an argon atmosphere to prepare carbon-doped nickel nanomaterials.

Embodiment 3

[0044] Example 3: Using nickel hydroxide as a precursor to synthesize hydrogen-doped nickel

[0045] Dissolve 4mmol of nickel nitrate in 10ml of deionized water, add 5ml of ammonia water to obtain a soluble nickel-ammonia complex, quickly transfer the nickel-ammonia complex to 45ml of diethylene glycol, and put it in an oil bath at 100°C for 30min to make the ammonia gas Released to obtain a nickel hydroxide precursor. The nickel hydroxide precursor was calcined at 350°C for 1 h in a hydrogen atmosphere to prepare hydrogen-doped nickel hydride nanomaterials.

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Abstract

The invention discloses a preparation method of an inorganic light element doped nickel-based material, which comprises the following steps: S1, providing a nickel precursor material; and S2, hydrogenating, boronizing, carbonizing or nitriding the nickel precursor material to obtain the inorganic light element doped nickel-based material, wherein the nickel precursor material includes a nickel salt, a nickel complex, an inorganic nickel precursor material and a nickel metal organic frame material. The invention also provides an inorganic light element doped nickel-based material prepared by the method and an application of the material as an electrocatalyst for hydrogen oxidation reaction / hydrogen precipitation reaction. The inorganic light element doped nickel-based material has excellenthydrogen electrocatalytic activity, good stability and anti-carbon-monoxide-poisoning ability. Moreover, the material is low in cost and simple to prepare, and has a wide commercial application prospect.

Description

technical field [0001] The invention relates to the technical field of electrocatalysis and energy conversion, in particular to a nickel-based material doped with inorganic light elements, its preparation method and its application as an electrocatalyst for hydrogen oxidation reaction / hydrogen evolution reaction. Background technique [0002] As a clean and efficient energy source, hydrogen has extremely high application value in modern industrial fields. The development of hydrogen economy mainly includes two aspects involving two semi-electrochemical reactions: hydrogen storage-hydrogen oxidation reaction and hydrogen utilization-hydrogen evolution reaction, such as hydrogen-oxygen fuel cells and electrolysis of water. Due to the slow kinetics of the hydrogen oxidation reaction / hydrogen evolution reaction, it is necessary to develop electrochemical catalysts to accelerate the reaction rate. At present, platinum-based catalysts exhibit good hydrogen electrocatalytic activi...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/86H01M4/90
CPCH01M4/8652H01M4/8673H01M4/8882H01M4/90Y02E60/50
Inventor 李彦光王淼王亭亭
Owner SUZHOU UNIV
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