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A kind of anode preparation method suitable for high temperature electrochemical hydrogen pump

An electrochemical and anode technology, applied in the field of electrochemical hydrogen energy, can solve the problems of limited choice of supporting materials and strict requirements, and achieve the effect of small interface impedance and good performance

Active Publication Date: 2019-04-05
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Low-temperature proton membranes are highly dependent on noble metal catalysts. For example, at higher temperatures (≥100°C), the electrode reaction kinetics of non-noble metal catalysts will be further increased, but excessively high temperatures (above 800°C) will have a negative impact on electrolytes, catalysts, and catalysts. The requirements for construction materials and devices are strict, and there are limited options for supporting materials such as internal wiring for electronic conduction, gas insulation and sealing materials, etc.

Method used

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  • A kind of anode preparation method suitable for high temperature electrochemical hydrogen pump
  • A kind of anode preparation method suitable for high temperature electrochemical hydrogen pump
  • A kind of anode preparation method suitable for high temperature electrochemical hydrogen pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this example, the nickel-based membrane electrode material used for the core of high-temperature electrochemical hydrogen pump prepared by traditional coating is prepared as follows:

[0031] 1. Select BaZr 0.8 Y 0.2 o 3-δ (BZY20) powder is the raw material of electrolyte hydrogen permeable membrane;

[0032] 2. Put the precursor powder in a sintering boat and sinter in a box-type muffle furnace at 1100°C for 5 hours to obtain a fine and fluffy electrolyte powder;

[0033] 3. Grind the prepared electrolyte powder in a mortar for 20 minutes, weigh 0.7 g of the ground electrolyte powder, and press it into a green body with a diameter of 18 mm under a pressure of 330 MPa with a powder tablet press;

[0034] 4. Put the pressed green body in a burning boat covered with neutral alumina in advance, and then spread a layer of neutral alumina on the green body (so that the green body is heated evenly during the sintering process to prevent cracking); Then place the burning ...

Embodiment 2

[0041] In this example, the core nickel-based membrane electrode material for high-temperature electrochemical hydrogen pump prepared by in-situ growth by ordered hydrothermal method is as follows:

[0042] 1. Select BaZr 0.8 Y 0.2 o 3-δ (BZY20) powder is the raw material of electrolyte hydrogen permeable membrane;

[0043] 2. Put the precursor powder in a sintering boat and sinter in a box-type muffle furnace at 1100°C for 5 hours to obtain a fine, fluffy electrolyte powder;

[0044] 3. Grind the prepared electrolyte powder in a mortar for 20 minutes, weigh 0.7 g of the ground electrolyte powder, and press it into a green body with a diameter of 18 mm under a pressure of 330 MPa with a powder tablet press;

[0045] 4. Put the pressed green body in a burning boat covered with neutral alumina in advance, and then spread a layer of neutral alumina on the green body (so that the green body is heated evenly during the sintering process to prevent cracking); Then place the burn...

Embodiment 3

[0051] In this example, the core cobalt-based membrane electrode material for high-temperature electrochemical hydrogen pump prepared by coating method is as follows:

[0052] 1. Choose BaCo 0.4 Fe 0.4 Zr 0.2 o 3-δ The powder is the raw material of the electrolyte hydrogen permeable membrane;

[0053] 2. Put the precursor powder in a sintering boat and sinter in a box-type muffle furnace at 1100°C for 5 hours to obtain a fine, fluffy electrolyte powder;

[0054] 3. Grind the prepared electrolyte powder in a mortar for 20 minutes, weigh 0.7 g of the ground electrolyte powder, and press it into a green body with a diameter of 18 mm under a pressure of 330 MPa with a powder tablet press;

[0055] 4. Put the pressed green body in a burning boat covered with neutral alumina in advance, and then spread a layer of neutral alumina on the green body (so that the green body is heated evenly during the sintering process to prevent cracking); Then put the burning boat in a box-type m...

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Abstract

The invention discloses a preparation method for an anode suitable for a high-temperature electrochemical hydrogen pump. An anode material is prepared through an ordered hydrothermal method, so that the contact conditions of a three-phase interface is improved, the active area is increased, contact resistance is reduced, the energy loss during operation of the electrochemical hydrogen pump is reduced. The interface resistance of a membrane electrode of the metal-based nano array anode prepared through the hydrothermal method is smaller; and through analysis of the purification degree of hydrogen, it is shown that compared with a traditional coating method, the membrane electrode of the metal-based nano array anode prepared in an in-situ growth mode through the hydrothermal method has better performance in the aspects of separation and purification of the hydrogen.

Description

technical field [0001] The invention relates to an anode preparation method suitable for high-temperature electrochemical hydrogen pumps, belonging to the technical field of electrochemical hydrogen energy. Background technique [0002] With the rapid development of the economy, energy demand and environmental protection are the main challenges faced by human beings. Therefore, the development of environmentally friendly new energy sources has become an urgent problem to be solved in today's society. Hydrogen energy has the following characteristics: light weight, good thermal conductivity, high combustion calorific value, non-toxic and non-polluting; the water generated by combustion can continue to produce hydrogen, and can be recycled repeatedly; high utilization rate, convenient transportation and storage, and hydrogen energy Alternatives to fossil fuels minimize the greenhouse effect. Hydrogen is used in a wide range of fields, among which the largest amount is used as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/04C25B1/02
CPCC25B1/02C25B11/04
Inventor 徐晨曦费明明张小乐张立涵李顺朱峻毅吴小建
Owner HEFEI UNIV OF TECH