Electrode for surface electrodeposition of platinum nanoflowers and its preparation method and application
A technology of electrodeposition and platinum nanotechnology, applied in battery electrodes, nanotechnology, circuits, etc., to achieve the effect of stable performance and high electrochemical catalytic activity
Inactive Publication Date: 2016-08-17
SHANGHAI NORMAL UNIVERSITY
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Problems solved by technology
So far, there is no method of using phytic acid to disperse carbon nanotubes and assemble them on electrodes to prepare platinum nanoparticles at home and abroad.
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[0022] The present invention will be further described below through specific embodiments.
[0023] (1) Dissolve carbon nanotubes in phytic acid solution so that the concentration of carbon nanotubes is 1mg / mL;
[0024] (2) Self-load the phytic acid-dispersed carbon nanotubes into the glassy carbon electrode, and the self-loading time is 30 minutes;
[0025] (3) Put the above glassy carbon electrode in 0.2mM H 2 PtCl 6 +0.5M H 2 SO 4 In the electrolyte solution, the deposition electric quantity is 37.8mC, the deposition potential is 0.15V, and platinum nanoflower clusters are obtained.
[0026] figure 1 It is the SEM image of the platinum nanoflower cluster deposited on the bare glassy carbon electrode. It can be seen from the figure that the diameter of the platinum nanoflower cluster is about 1 μm.
[0027] figure 2 It is the SEM image of the carbon nanotubes installed on the glassy carbon electrode, figure 2 A is phytic acid dispersed carbon nanotubes, figure 2 ...
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Abstract
The invention discloses a method for electrically depositing a platinum nanoflower cluster by using a novel multi-walled carbon nanotube dispersed with phytic acid and catalysis of the platinum nanoflower cluster to methyl alcohol. The platinum nanoflower cluster can be used for catalyzing methyl alcohol and preparing a fuel cell. A method for catalyzing the nanoflower cluster comprises the following steps: (1) dissolving a carbon nanotube in a phytic acid solution, wherein the concentration of the carbon nanotube is 0.5-3mg / mL; (2) automatically assembling the carbon nanotube dispersed with the phytic acid to a glassy carbon electrode, wherein the automatic assembly time is 10-90 minutes; (3) depositing the glassy carbon electrode under 0.1-0.3V in a 0.2mM H2PtCl6+0.5M H2SO4 solution, thus obtaining a platinum nanoflower cluster. The preparation method is simple and environmental-friendly; the prepared platinum nanoflower cluster has excellent electrochemical catalytic performance to the methyl alcohol and the electrochemical catalytic performance to the methyl alcohol through the platinum nanoflower cluster which is deposited by automatically assembling the carbon nanotube dispersed with bare glass carbon and DMF (Dimethyl Formamide) on the glassy carbon electrode.
Description
technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a method for preparing electrodeposited platinum nanoflower clusters using novel dispersed carbon nanotubes and the electrochemical catalysis application to methanol. Background technique [0002] Direct methanol fuel cell (DMFC) has the advantages of cheap fuel, easy storage and portability, high theoretical unit energy, and almost no pollution emissions. It is one of the ideal power sources for various small portable power sources. However, the anode catalysts of actual DMFCs are easily poisoned, so preparing and finding highly active catalysts is an important way to improve the performance of DMFCs, and has become a goal that researchers are constantly pursuing. In order to improve the ability of electrocatalysts to catalyze the oxidation of methanol, researchers mainly conduct research from the following two aspects: on the one hand, various new carbo...
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IPC IPC(8): H01M4/88B82Y40/00
CPCB82Y40/00H01M4/8803H01M4/8853H01M4/926Y02E60/50
Inventor 杨海峰叶平平
Owner SHANGHAI NORMAL UNIVERSITY