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A hydrogen production hydrazine hydrate fuel cell device

A fuel cell, hydrazine hydrate technology, applied in fuel cells, fuel cell components, circuits, etc., can solve the problems of high energy consumption, slow kinetics, environmental burden, etc. Good stability and low price

Active Publication Date: 2020-12-29
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Hydrogen is an ideal clean energy to replace non-renewable fossil fuels. However, most of the hydrogen production in industrial applications comes from the cracking of fossil fuels. This process not only consumes a large amount of fossil fuels but also releases pollutants such as greenhouse gases. Gas CO 2 and other toxic and harmful polluting gases, which have caused a huge burden on the environment
[0003] At present, with the conversion of renewable energy (solar energy, wind energy, tidal energy, etc.) , so that the energy consumption of hydrogen production by electrolysis of water is quite high. Commercial hydrogen production by electrolysis of water needs 1.8-2.0V to drive the reaction, which is much higher than the theoretical starting voltage of 1.23V

Method used

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  • A hydrogen production hydrazine hydrate fuel cell device
  • A hydrogen production hydrazine hydrate fuel cell device
  • A hydrogen production hydrazine hydrate fuel cell device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1 Preparation of carbon cloth electrode sheet with in-situ growth of three-dimensional porous nickel-cobalt selenide catalyst

[0053] (1) Cut the commercial carbon cloth into the required size (1cm×1.2cm), respectively at 0.5M H 2 SO 4 and 30%H 2 o2 Boil in an oil bath at 80°C for 1 hour, wash with deionized water and dry for later use.

[0054] (2) Prepare a mixed solution of nickel nitrate and cobalt nitrate with a molar concentration ratio of 1:1, and the total concentration of nickel particles and cobalt ions is 0.1M.

[0055] (3) A three-electrode system is used for electrodeposition, wherein the reference electrode is silver / silver chloride (Ag / AgCl) (saturated potassium chloride solution), the counter electrode is a graphite rod, and the working electrode is processed in step (1) The obtained hydrophilic carbon cloth. Electrodeposition adopts the method of multi-potential step, and maintains the potential of -1.2V relative to silver / silver chloride (...

Embodiment 2 3

[0057] The characterization of embodiment 2 three-dimensional porous nickel-cobalt selenide catalyst

[0058] Scanning electron microscopy was used to examine the micronized morphology of the sample, and the scanning electron microscope photos are as follows: image 3 shown. The test results show that the sample is a three-dimensional porous nickel-cobalt selenide. It can be seen from the figure that the three-dimensional porous nickel-cobalt selenide is grown on the carbon cloth in situ, and a large number of pores are distributed in it.

Embodiment 3

[0059] Example 3 Hydrophilic carbon cloth with in-situ growth of three-dimensional porous nickel-cobalt selenide catalyst was used as an anode electrode sheet (A#) for electrochemical testing of HzOR

[0060] The hydrophilic carbon cloth electrode sheet grown in situ with three-dimensional porous nickel-cobalt selenide catalyst was tested on the electrochemical workstation for linear sweep curve (LSV), and the electrolytes were:

[0061] 1) Electrolyte: 1.0M KOH and 0.5M hydrazine hydrate (N 2 h 4 ), test catalytic hydrazine hydrate oxidation reaction (abbreviated as HzOR) performance;

[0062] 2) The electrolyte is: 1.0M KOH, and the oxygen evolution reaction (referred to as OER) performance is tested.

[0063] The linear scan curves of the A# electrode in the above two electrolytes are as follows: Figure 4 As shown in the figure, it can be seen that in 1.0M KOH, the OER reaction occurs on the surface of the anode electrode sheet. After adding 0.5M hydrazine hydrate solut...

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Abstract

The invention discloses a hydrogen production hydrazine hydrate fuel cell device. The device comprises an anode electrode plate, a cathode electrode plate, a separator, an anode chamber electrolyte and a cathode chamber electrolyte. The anode electrode plate comprises hydrophilic carbon cloth and an anode catalyst loaded on the hydrophilic carbon cloth; the cathode electrode plate comprises hydrophilic carbon cloth and a cathode catalyst loaded on the hydrophilic carbon cloth; the anode catalyst and the cathode catalyst are hydrazine hydrate oxidation and hydrogen evolution bifunctional catalysts; the anode chamber electrolyte is an alkaline solution; the cathode chamber electrolyte is an acid solution. The fuel cell device can achieve generation and hydrogen production at the same time, and is a novel hydrazine hydrate fuel cell, the power density can reach up to 13.3mWcm-2, the Faraday efficiency of hydrogen production is close to 100 percent, and the fuel cell device has the advantages of good stability, low price, simple operation, excellent performances and easy achievement of large-scale production.

Description

technical field [0001] The application relates to a fuel cell device for producing hydrogen hydrazine hydrate, which belongs to the field of electrochemical fuel cells, hydrogen production technology and inorganic catalyst materials. Background technique [0002] Hydrogen is an ideal clean energy to replace non-renewable fossil fuels. However, most of the hydrogen production in industrial applications comes from the cracking of fossil fuels. This process not only consumes a large amount of fossil fuels but also releases pollutants such as greenhouse gases. Gas CO 2 And other poisonous and harmful polluting gases have caused a huge burden to the environment. [0003] At present, with the conversion of renewable energy (solar energy, wind energy, tidal energy, etc.) , so that the energy consumption of hydrogen production by electrolysis of water is quite high. Commercial hydrogen production by electrolysis of water needs 1.8-2.0V to drive the reaction, which is much higher t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/02H01M8/0202H01M8/0606
CPCH01M8/02H01M8/0606Y02E60/50
Inventor 王根香温珍海
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI