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Ruthenium-nickel composite electrode and preparation method thereof, and application of ruthenium-nickel composite electrode

A composite electrode and electrode technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor low-temperature electrochemical performance, poor ammonia catalytic activity, etc., and achieve good load stability, improved reaction interface, and good low-temperature activity. Effect

Active Publication Date: 2019-10-15
福大紫金氢能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved in the present invention is to overcome defects such as poor ammonia catalytic activity and poor low-temperature electrochemical performance in the direct ammonia SOFC electrode in the prior art, thereby providing a preparation method of a ruthenium-nickel composite ammonia decomposition hydrogen production electrode

Method used

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  • Ruthenium-nickel composite electrode and preparation method thereof, and application of ruthenium-nickel composite electrode
  • Ruthenium-nickel composite electrode and preparation method thereof, and application of ruthenium-nickel composite electrode
  • Ruthenium-nickel composite electrode and preparation method thereof, and application of ruthenium-nickel composite electrode

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Embodiment 1

[0038] This embodiment provides a method for preparing a ruthenium-nickel composite electrode, comprising:

[0039] The nickel base electrode body (mass is m m) used in this embodiment 1 ) includes a first material and a second material, the first material is YSZ, the second material is nickel oxide, the mass ratio of the first material and the second material is 4:6; the content of ruthenium in the ruthenium-nickel composite electrode is 1wt%;

[0040] Preparation methods include,

[0041] (1) Weigh 0.3g of 5wt% ruthenium nitrate solution, add 0.3g of absolute ethanol and slightly shake it up as the precursor solution of ruthenium for later use, then drop-coat the precursor solution of ruthenium onto the body of the nickel-based electrode, and let it stand for 1h , and then dried at 100°C for 1 hour;

[0042] (2) Heat up to 450°C at a heating rate of 1.2°C / min for calcination, and then cool down to room temperature after 20 minutes of calcination to obtain a ruthenium oxide...

Embodiment 2

[0049] This embodiment provides a method for preparing a ruthenium-nickel composite electrode, comprising:

[0050] The nickel base electrode body (mass is m m) used in this embodiment 1) includes a first material and a second material, the first material is BCZY, the second material is nickel oxide, the mass ratio of the first material and the second material is 7:13; the content of ruthenium in the ruthenium-nickel composite electrode is 0.5wt% ;

[0051] Preparation methods include,

[0052] (1) Weigh 0.05g of ruthenium chloride, add 0.4g of deionized water and slightly shake it up as the precursor solution of ruthenium for later use, then drip-coat the precursor solution of ruthenium onto the nickel-based electrode body, let it stand for 1.2h, and then Dry at 120°C for 0.4h;

[0053] (2) Heat up to 500°C at a heating rate of 1.0°C / min for calcination, and then cool down to room temperature after 15 minutes of calcination to obtain a ruthenium oxide nickel-based composit...

Embodiment 3

[0060] This embodiment provides a method for preparing a ruthenium-nickel composite electrode, comprising:

[0061] The nickel base electrode body (mass is m m) used in this embodiment 1 ) includes a first material and a second material, the first material is GDC, the second material is nickel oxide, the mass ratio of the first material and the second material is 9:11; the content of ruthenium in the ruthenium-nickel composite electrode is 3wt%;

[0062] Preparation methods include,

[0063] (1) Weigh 0.5g of ruthenium nitrate with a mass fraction of 5wt%, add 0.3g of absolute ethanol and shake it up slightly, then use it as the precursor solution of ruthenium for later use, then drop-coat the precursor solution of ruthenium onto the nickel-based electrode body, statically Set for 0.5h, then dry at 80°C for 1.2h;

[0064] (2) Heat up to 500°C at a heating rate of 1.5°C / min for calcination, and then cool down to room temperature after 20 minutes of calcination to obtain a rut...

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Abstract

The invention relates to the technical field of solid oxide fuel cell electrode preparation, in particular to a ruthenium-nickel composite electrode and a preparation method thereof, and application of a ruthenium-nickel composite electrode. The method comprises the following steps of: dripping a ruthenium precursor solution on a nickel-based electrode body, performing standing and then drying, performing roasting and cooling in sequence to obtain a ruthenium oxide nickel-based composite electrode, repeating the steps until the content of ruthenium in the nickel-based electrode body is 0.5-3 weight percent, and finally, reducing the treated ruthenium oxide nickel-based composite electrode to obtain the ruthenium-nickel composite electrode. In addition, the electrode manufactured by adopting the method is good in ammonia decomposition catalytic activity and the conductivity, has the good ammonia decomposition catalytic activity and can provide more hydrogen for the battery, and the ruthenium-based catalyst has the better low-temperature activity, so that the low-temperature electrochemical performance of the battery is improved.

Description

technical field [0001] The invention relates to the technical field of SOFC electrode preparation, in particular to a ruthenium-nickel composite electrode and its preparation method and application. Background technique [0002] Due to problems such as environmental pollution and the greenhouse effect, the energy structure dominated by traditional carbon-based energy is facing huge challenges. Hydrogen energy is considered to be an alternative to future fossil fuels due to its advantages such as cleanliness, high energy density per unit mass, and wide range of sources. sexual energy. With the gradual industrialization of hydrogen fuel cell technology, the efficient and carbon-free utilization of hydrogen energy will also be realized. At present, a key problem that needs to be solved is efficient and safe hydrogen storage technology. [0003] Ammonia is not only an important inorganic chemical product, but also has unique advantages as a hydrogen carrier. Ammonia is easy t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88
CPCH01M4/86H01M4/88H01M4/8828Y02E60/50
Inventor 罗宇江莉龙陈崇启詹瑛瑛
Owner 福大紫金氢能科技股份有限公司
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