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Molybdenum sulfide functional carbon nano tube Pt-carried catalyst for direct methanol fuel cell and preparation method of catalyst

A methanol fuel cell, carbon nanotube technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as small specific surface area, application limitations, and the influence of catalyst electro-oxidation performance.

Active Publication Date: 2015-11-18
GUANGXI NORMAL UNIV
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  • Abstract
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Problems solved by technology

However, directly using MoS 2 As the carrier of electrocatalyst, there are disadvantages such as poor conductivity and small specific surface area, which will have a great impact on the methanol electrooxidation performance of the catalyst, so that its application in DMFC is limited to a certain extent.
[0004] So far, the MoS 2 The research on functionalized carbon nanocomposites used as fuel cell anode electrocatalyst supports has not been reported in literature and patents

Method used

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  • Molybdenum sulfide functional carbon nano tube Pt-carried catalyst for direct methanol fuel cell and preparation method of catalyst

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Embodiment

[0023] Such as figure 1 As shown, a method for preparing a molybdenum sulfide functionalized carbon nanotube-supported Pt catalyst for a direct methanol fuel cell includes the following steps:

[0024] 1) Add 20mg of acidified MWCNTs, 400μL of concentrated hydrochloric acid and 20~300μL of aniline monomer to a container filled with three times distilled water, 100μL in this example, magnetic stirring at room temperature for 12 hours, then add 0.4g (NH 4 ) 2 S 2 O 8 Solid, continue to stir for 12 hours, the resulting product is centrifuged, washed and vacuum dried to obtain PANI modified MWCNTs composite material PANI-MWCNTs;

[0025] 2) Weigh 10 mg of PANI-MWCNTs sample and disperse in 5 mL 0.16 mg mL ultrasonically -1 In the ethanol solution of ammonium tetrathiomolybdate, ultrasonic treatment until the solvent is completely volatilized, the solid obtained is placed in a quartz tube furnace under the protection of nitrogen at 300-1000°C for 3 hours. The heat treatment temperature in...

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Abstract

The invention discloses a molybdenum sulfide functional carbon nano tube Pt-carried catalyst for a direct methanol fuel cell and a preparation method of the catalyst. The preparation method comprises the following steps of: 1) preparing a PANI-modified multi-wall carbon nano tubes (MWCNTs) composite material polyaniline (PANI)-MWCNTs; 2) preparing a molybdenum sulfide functional MWCNTs composite material MoS2-MWCNTs; and 3) obtaining the molybdenum sulfide functional MWCNTs Pt-carried catalyst Pt / MoS2-MWCNTs. The method is simple in process flow, high in controllability and low in cost, is applicable for production at a large scale and has favorable application prospect; and the catalyst prepared according to the method is represented with the characteristics of high electrocatalytic activity on methanol oxidization, high stability and high ability of resisting CO poison.

Description

Technical field [0001] The invention relates to the fields of electrocatalysis and fuel cells, in particular to a direct methanol fuel cell molybdenum sulfide functionalized carbon nanotube-supported Pt catalyst and a preparation method thereof. Background technique [0002] At present, the higher cost and lower electrocatalytic performance of the anode electrocatalyst of direct methanol fuel cell (DMFC) are still the main factors hindering its large-scale commercial application. Therefore, how to improve the utilization efficiency and electrocatalytic performance of the precious metal Pt in the catalyst has always been a hot issue in this field. The catalytic performance of Pt nanoparticles in electrocatalysts is closely related to the catalyst support used and its surface properties. Among the many carrier carbon nanomaterials, such as carbon black, carbon nanospheres, carbon nanotubes and graphene, etc., carbon nanotubes have unique physics and chemistry due to their excellen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/92
CPCH01M4/926Y02E60/50
Inventor 樊友军王睿翔张俊明
Owner GUANGXI NORMAL UNIV
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