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Catalyst slurry for fuel cell double-effect oxygen electrode, preparation method and application thereof

A double-effect oxygen electrode, catalyst slurry technology, applied in battery electrodes, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve problems such as decreased oxygen reduction activity

Inactive Publication Date: 2012-06-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In terms of using oxides as carriers, Wenli Yao et al [Electrochemistry Communications 9:1029-1034, 2007] used sodium dodecylbenzenesulfonate as a protective agent and sodium borohydride as a reducing agent to prepare Pt / IrO 2 , wherein the mass fraction of Pt is 40%, the same as Pt black and IrO 2 Oxygen evolution activity was improved, but oxygen reduction activity was decreased compared with the mechanical mixture of

Method used

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  • Catalyst slurry for fuel cell double-effect oxygen electrode, preparation method and application thereof
  • Catalyst slurry for fuel cell double-effect oxygen electrode, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Accurately weigh 450 mg of Nafion solution with a mass concentration of 5%, add it to the mixed solution of propanol and water, the mass ratio of propanol and water is 1:1, stir for 6 minutes, add 90 mg of Pt in H 2 PtCl 6 The solution continued to stir for 30 minutes, adding NaOH to adjust the pH of the solution to 9 and 5ml of formic acid, stirring and heating to reflux at 90° C., keeping the pH of the solution at 9, and reacting for 60 minutes to finally obtain a stable dark brown Pt colloidal solution.

[0047] Accurately weigh 150 mg of Nafion solution with a mass concentration of 5%, add it to the mixed solution of ethanol and water, the mass ratio of ethanol and water is 1:1, after stirring for 6 minutes, add 30 mg of Ir in H 2 IrCl 6 The solution continued to stir for 30 minutes, then mixed with the above-mentioned Pt colloidal solution, continued to stir for 10 minutes, added NaOH to adjust the pH value of the solution to 13, transferred the solution to a pres...

Embodiment 2

[0059] Accurately weigh 450 mg of SPEEK solution with a mass concentration of 5%, add it into the mixed solution of ethanol and water, the mass ratio of ethanol and water is 2:1, stir for 10 minutes, add 90 mg of Pt in H 2 PtCl 6 The solution was stirred for 30 minutes and Na was added 2 CO 3 Adjust the pH of the solution to 10 and 5ml of acetaldehyde, stir and heat to reflux at 85°C, keep the pH of the solution at 10, and react for 50 minutes to finally obtain a stable dark brown Pt colloidal solution.

[0060] Accurately weigh 150 mg of SPEEK solution with a mass concentration of 5%, add it into the mixed solution of ethanol and water, the mass ratio of ethanol and water is 1:1, after stirring for 6 minutes, add 30 mg of Ir in H 2 IrCl 6 The solution was stirred for 30 minutes, then mixed with the above colloidal solution of Pt, stirred for 10 minutes, and Na 2 CO 3 Adjust the pH value of the solution to 13, transfer the solution to a pressure-resistant stainless steel ...

Embodiment 3

[0063] Accurately weigh 450 mg of Nafion solution with a mass concentration of 5%, add it to the mixed solution of methanol and water, the mass ratio of methanol to water is 1:1, stir for 10 minutes, add 60 mg of Pt in H 2 PtCl 6 and 20mgAu of HAuCl 4 The solution was stirred for 30 minutes and Na was added 2 CO 3 Adjust the pH value of the solution to 10 and 5ml formaldehyde, stir and heat to reflux at 85° C., keep the pH value of the solution at 10, and react for 50 minutes to finally obtain a stable dark brown PtAu colloidal solution.

[0064] Accurately weigh 150 mg of Nafion solution with a mass concentration of 5%, add it to the mixture of methanol and water, the mass ratio of methanol to water is 1:1, stir for 6 minutes, then add 20 mg of Ir in H 2 IrCl 6 The solution continued to stir for 30 minutes, then mixed with the above-mentioned PtAu colloidal solution, continued to stir for 10 minutes, added NaOH to adjust the pH value of the solution to 13.5, transferred t...

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Abstract

The invention relates to catalyst slurry for an integral reproducible fuel cell double-effect oxygen electrode and a preparation method thereof. The catalysts are supported composite nano particles and are in-situ modified by proton conducting polymers. Metal nano particles used as carriers have catalytic oxygen reduction function. The supported metal nano particles have catalytic oxygen evolution function. The mass ratio of the metal nano particles to the catalysts is 0.02-1:1 and satisfies the requirements of the catalytic layer of the integral reproducible fuel cell double-effect oxygen electrode on the proportions of the metal nano particles and the catalysts. After impure ions and organic byproducts are removed from reaction products, the reaction products can be directly used to prepare the catalytic layer of the integral reproducible fuel cell double-effect oxygen electrode. The average grain size of the prepared catalyst particles is 2-4nm. The prepared catalyst particles are applied to the catalytic layer of the integral reproducible fuel cell double-effect oxygen electrode and excellent cell performances are obtained.

Description

technical field [0001] The invention relates to an energy storage battery, in particular to a catalyst slurry for an integrated renewable fuel cell double-effect oxygen electrode. Background technique [0002] Space technology has a profound impact on the country's comprehensive strength and international status, so the research and development of space technology has been highly valued by countries all over the world. A highly safe and reliable energy system is an important factor to ensure the normal operation of space vehicles such as space stations and satellites. At present, solar cells are used as the main power source of the spacecraft, and space renewable energy is used as the energy storage system to provide the energy needs of the spacecraft in the dark state. [0003] Scientists have conducted a comparative study of various existing technical solutions that can be used in space renewable energy systems, and believe that compared with Li ions, Ni / MHx, Ni / Cd and ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/40H01M4/88H01M4/92
CPCY02E60/50
Inventor 张华民张益宁马海鹏刘波
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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