Preparation method of phosphorus-doped direct methanol fuel cell anode catalyst

A methanol fuel cell and catalyst technology, applied in fuel cells, battery electrodes, electrochemical generators, etc., can solve the problems of low catalyst activity, easy poisoning and deactivation, difficulty in electrocatalytic oxidation of methanol, etc., and reach the catalytic active site Increased, less environmental pollution, improved catalyst activity and anti-toxic effect

Inactive Publication Date: 2022-08-05
陕西艾诺威邦信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved in the present invention is to overcome the existing defects and provide a method for preparing a phosphorus-doped direct methanol fuel cell anode catalyst, so as to solve the current direct methanol fuel cell preparation process proposed in the above-mentioned background technology. Catalytic oxidation is difficult, the activity of the catalyst is not high and it is easy to be poisoned and deactivated

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  • Preparation method of phosphorus-doped direct methanol fuel cell anode catalyst

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Embodiment 1

[0027] The present invention provides a technical solution: a preparation method of a phosphorus-doped direct methanol fuel cell anode catalyst, comprising the following preparation steps:

[0028] Step 1: Prepare the materials and instruments required for the experiment;

[0029] Step 2: place the prepared carbon nanotubes in a NaOH solution for treatment, rinse with water, and dry for later use;

[0030] Step 3: ultrasonically dispersing the multi-walled carbon nanotubes in ethanol, adding triphenylphosphine to it to dissolve and mixing uniformly, heating and stirring to evaporate to dryness, then placing the obtained precursor in a tube furnace, and calcining in a nitrogen atmosphere to obtain Phosphorus-doped carbon nanotubes, denoted as P-CNT;

[0031] Step 4: Weigh the P-CNT carrier obtained in Step 3 and mix it with ultrasonic waves in 20 ml of deionized water. Add the Pt and Ni precursor solutions, stir well, and then slowly add excess ethylene glycol dropwise under t...

Embodiment 2

[0044] The present invention provides a technical solution: a preparation method of a phosphorus-doped direct methanol fuel cell anode catalyst, comprising the following preparation steps:

[0045] Step 1: Prepare the materials and instruments required for the experiment;

[0046] Step 2: place the prepared carbon nanotubes in a NaOH solution for treatment, rinse with water, and dry for later use;

[0047] Step 3: ultrasonically dispersing the multi-walled carbon nanotubes in ethanol, adding triphenylphosphine to it to dissolve and mixing uniformly, heating and stirring to evaporate to dryness, then placing the obtained precursor in a tube furnace, and calcining in a nitrogen atmosphere to obtain Phosphorus-doped carbon nanotubes, denoted as P-CNT;

[0048]Step 4: Weigh the P-CNT carrier obtained in Step 3 and mix it with ultrasonic waves in 20 ml of deionized water. Add the Pt and Ni precursor solutions, stir well, and then slowly add excess ethylene glycol dropwise under th...

Embodiment 3

[0061] The present invention provides a technical solution: a preparation method of a phosphorus-doped direct methanol fuel cell anode catalyst, comprising the following preparation steps:

[0062] Step 1: Prepare the materials and instruments required for the experiment;

[0063] Step 2: place the prepared carbon nanotubes in a NaOH solution for treatment, rinse with water, and dry for later use;

[0064] Step 3: ultrasonically dispersing the multi-walled carbon nanotubes in ethanol, adding triphenylphosphine to it to dissolve and mixing uniformly, heating and stirring to evaporate to dryness, then placing the obtained precursor in a tube furnace, and calcining in a nitrogen atmosphere to obtain Phosphorus-doped carbon nanotubes, denoted as P-CNT;

[0065] Step 4: Weigh the P-CNT carrier obtained in Step 3 and mix it with ultrasonic waves in 20 ml of deionized water. Add the Pt and Ni precursor solutions, stir well, and then slowly add excess ethylene glycol dropwise under t...

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Abstract

The invention discloses a preparation method of a phosphorus-doped direct methanol fuel cell anode catalyst. The preparation method comprises the following preparation steps: step 1, preparing materials and instruments required by an experiment; 2, the prepared carbon nanotubes are placed in a NaOH solution to be pretreated, washed with water and dried for standby application; 3, ultrasonically dispersing a multi-walled carbon nanotube in ethanol, adding triphenylphosphine into the multi-walled carbon nanotube, dissolving, uniformly mixing, heating, stirring, evaporating to dryness, putting an obtained precursor into a tubular furnace, and calcining in a nitrogen atmosphere to obtain a phosphorus-doped carbon nanotube marked as P-CNT; the preparation method comprises the following steps: taking triphenylphosphine as a phosphorus source, and performing phosphorus doping on a multi-walled carbon nanotube; the PtNi / P-CNTs methanol fuel cell anode catalyst is prepared by loading noble metal Pt and non-noble metal Ni alloy particles on phosphorus-doped carbon nanotubes through a chemical reduction method, the carbon nanotubes generate different defects and vacancies due to phosphorus doping, more active sites are provided, and the activity of the catalyst is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of an anode catalyst for a methanol fuel cell, and in particular relates to a preparation method for an anode catalyst for a phosphorus-doped direct methanol fuel cell. Background technique [0002] The direct methanol fuel cell is a low temperature fuel cell, using a proton exchange membrane as a solid electrolyte and methanol as a fuel. Relevant technologies continue to progress, and the prospects for industrialization and practical application are increasingly bright, showing a good development momentum. DMFC single cells are mainly composed of membrane electrodes, bipolar plates, current collector plates and sealing gaskets. The membrane electrode composed of the catalyst layer and the proton exchange membrane is the core component of the fuel cell, and all the electrochemical reactions of the fuel cell are completed by the membrane electrode. The main function of the proton exchange mem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/92H01M8/1011
CPCH01M4/88H01M4/921H01M4/926H01M8/1011H01M2004/8689Y02E60/50
Inventor 周健
Owner 陕西艾诺威邦信息科技有限公司
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