Hill-shaped in-situ nickel-vanadium double-metal hydroxide catalyst as well as preparation method and application thereof

A hydroxide, bimetallic technology, applied in the field of electrocatalytic materials, achieves the effects of low synthesis temperature, enhanced mechanical stability, and simple preparation process
CN110699702AActive Publication Date: 2020-01-17SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Publication Date
2020-01-17

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Abstract

The invention discloses a hill-shaped in-situ nickel-vanadium double-metal hydroxide catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: step 1, pretreating foamed nickel; 2, adding vanadium chloride and urea into a mixed solvent of alcohol and Nitrogen-methyl pyrrolidone at the same time; 3, soaking the treated foamed nickel in asolution A, and carrying out solvothermal reaction for 23-25 hours at 115-125 DEG C; and 4, after the reaction is finished, naturally cooling a reaction kettle to room temperature, alternately cleaning with water and alcohol, collecting and drying to obtain the hill-shaped in-situ nickel-vanadium double-metal hydroxide catalyst. The preparation method has the characteristics of simple preparationprocess, low synthesis temperature, no need of large-scale equipment and harsh conditions and the like by adopting the solvothermal method, and the prepared hill-shaped in-situ nickel-vanadium double-metal hydroxide catalyst has high activity and high stability, and has good total water splitting performance under alkaline and neutral conditions.
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Description

technical field

[0001] The invention belongs to the field of electrocatalytic materials, in particular to a hill-shaped in-situ nickel-vanadium double metal hydroxide catalyst and its preparation method and application. Background technique

[0002] With the increasing environmental pollution and the rapid consumption of fossil fuels, it is imperative to develop renewable and sustainable energy. Owing to its carbon-free emission, electrolysis of water to produce hydrogen (H 2 ) and oxygen (O 2 ) is considered one of the most promising and competitive solutions [1] In the field of electrocatalysis, noble metal-based materials (oxides of Pt, Ru, or Ir) are currently the best electrocatalysts for hydrogen production, while scarcity and high cost severely limit their practical applications.

[0003] Therefore, in recent years, researchers have devoted themselves to the development of non-precious metal hydrogen-producing electrocatalysts composed of high-abundance elements in...

Claims

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