Ruthenium-doped ferronickel alloy catalyst for electrolysis water hydrogen production energy and preparation method

An iron-nickel alloy and electrolyzed water technology, which is applied in the electrolysis process, electrolysis components, metal processing equipment, etc., can solve the problems of poor hydrogen evolution performance, slow hydrogen evolution kinetics, and affecting the hydrogen production efficiency of electric price water, so as to improve the hydrogen evolution ability, Effects of lowering spontaneous electrolysis barrier and increasing reactive sites

Inactive Publication Date: 2018-11-20
CHENDU NEW KELI CHEM SCI CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0007] According to the above, the metal hydroxide catalysts used for electrolysis of water to produce hydrogen in the existing schemes have very poor hydrogen evolution performance, and a large voltage input is required to decompose water, and the hydrogen evolution kinetics is mainly limited by the process of ionizing water to produce hydrogen ions. Slow, which in turn affects the efficiency of hydrogen production from electrolyzed water. The present invention proposes a ruthenium-doped iron-nickel alloy catalyst and preparation method for hydrogen production energy by electrolysis of water, which can effectively solve the above technical problems

Method used

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  • Ruthenium-doped ferronickel alloy catalyst for electrolysis water hydrogen production energy and preparation method
  • Ruthenium-doped ferronickel alloy catalyst for electrolysis water hydrogen production energy and preparation method

Examples

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Effect test

Embodiment 1

[0032] (1) Add nickel source, iron source, ruthenium source and chitosan into deionized water to prepare a sol; the nickel source is nickel chloride. The iron source was ferric chloride. The ruthenium source is ruthenium nitrate. In the sol, 10 parts by weight of nickel source, 20 parts by weight of iron source, 6 parts by weight of ruthenium source, 4 parts by weight of auxiliary agent, and 60 parts by weight of deionized water.

[0033] (2) The polyaniline-coated nickel foam powder was first immersed in the sol prepared in step (1), and then left to age until the system reached equilibrium; the time to stand and age was 5 hours.

[0034] (3) Filtration and drying, followed by high-temperature calcination in a reducing atmosphere to remove polyaniline, and obtain a ruthenium-doped iron-nickel alloy catalyst with a core-shell structure. The temperature of the high-temperature calcination is 700° C., and the time is 2 hours.

[0035] For the alloy catalyst prepared in Exampl...

Embodiment 2

[0037] (1) Add nickel source, iron source, ruthenium source and gelatin into deionized water to prepare a sol; the nickel source is nickel sulfate. The iron source was ferric sulfate. The ruthenium source is ruthenium trichloride. In the sol, 12 parts by weight of nickel source, 25 parts by weight of iron source, 6 parts by weight of ruthenium source, 2 parts by weight of auxiliary agent, and 55 parts by weight of deionized water.

[0038] (2) First immerse the polyaniline-coated nickel foam powder in the sol prepared in step (1), and then stand and age until the system reaches equilibrium; the time for standing and aging is 6 hours.

[0039] (3) Filtration and drying, followed by high-temperature calcination in a reducing atmosphere to remove polyaniline, and obtain a ruthenium-doped iron-nickel alloy catalyst with a core-shell structure. The temperature of high-temperature calcination is 500° C., and the time is 3 hours.

[0040] For the alloy catalyst prepared in Example...

Embodiment 3

[0042] (1) Add nickel source, iron source, ruthenium source and chitosan into deionized water to prepare a sol; the nickel source is nickel nitrate. The iron source was ferric nitrate. The ruthenium source is ruthenium nitrate. In the sol, 10 parts by weight of nickel source, 22 parts by weight of iron source, 6 parts by weight of ruthenium source, 2 parts by weight of auxiliary agent, and 60 parts by weight of deionized water.

[0043] (2) First immerse the polyaniline-coated nickel foam powder in the sol prepared in step (1), and then stand and age until the system reaches equilibrium; the time for standing and aging is 4 hours.

[0044] (3) Filtration and drying, followed by high-temperature calcination in a reducing atmosphere to remove polyaniline, and obtain a ruthenium-doped iron-nickel alloy catalyst with a core-shell structure. The temperature of high-temperature calcination is 650° C., and the time is 2 hours.

[0045] For the alloy catalyst prepared in Example 3,...

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Abstract

The invention relates to the field of electrolysis water hydrogen production, and discloses a ruthenium-doped ferronickel alloy catalyst for electrolysis water hydrogen production energy and a preparation method. The preparation method comprises the following preparation flows: (1) a nickel source, an iron source, a ruthenium source and auxiliaries are added in de-ionized water to prepare sol; (2)foam nickel powder coated by polyaniline is dipped in the sol for standing and aging; and (3) the ruthenium-doped ferronickel alloy catalyst with a core-shell structure is prepared through high-temperature calcining after filtration and drying. Compared with a common hydrogen production catalyst, the prepared catalyst coats an iron nickel ruthenium alloy on a foam nickel surface layer, so that the reaction activity sites of the catalyst are added, the spontaneous electrolysis barrier of water is effectively lowered, the hydrogen evolution capacity of the catalyst is improved, the excellent hydrogen catalysis performance is achieved, the catalysis activity is high, and the efficiency for electrolysis water hydrogen production is high.

Description

technical field [0001] The invention relates to the field of hydrogen production by electrolysis of water, and discloses a ruthenium-doped iron-nickel alloy catalyst for hydrogen production energy by electrolysis of water and a preparation method thereof. Background technique [0002] With the strengthening of environmental protection, more and more researches focus on green and pollution-free energy. Among them, hydrogen energy is clean, pollution-free, efficient and renewable, and is the most potential energy carrier in the future. As an efficient, clean and ideal secondary energy source, hydrogen energy has received extensive attention from all over the world. Large-scale and cheap production of hydrogen is one of the important links in the development and utilization of hydrogen energy. Among the current hydrogen production technologies, hydrogen production using electrolysis of water technology is currently the most promising technology, and it is also a cost-effectiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/06B22F1/02
CPCC25B1/04C25B11/04B22F1/17Y02E60/36
Inventor 陈庆廖健淞
Owner CHENDU NEW KELI CHEM SCI CO LTD
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