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Preparation method and application of a two-metal composite electrode

A composite material and solution mixing technology, used in electrodes, battery electrodes, chemical instruments and methods, etc., can solve the problems of low catalytic activity and low current density, and achieve the effects of simple preparation method, reduced platinum usage, and easy adjustment.

Inactive Publication Date: 2017-04-19
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved in the present invention is: improve the catalytic activity of Pt electrode and Pd electrode to 1,2-propanediol oxidation reaction under the condition of alkaline medium, the problem that the current density of reaction is low

Method used

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  • Preparation method and application of a two-metal composite electrode
  • Preparation method and application of a two-metal composite electrode

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Embodiment 1

[0019] (1) Take a dry and clean 50mL beaker, first add 20mL of double distilled water to it, then add 12.5uL of 0.1M chloroplatinic acid solution and 37.5uL of 0.1M palladium nitrate solution, stir and mix evenly, and prepare two kinds of A mixed solution of metal precursors; 1.59 mg of carbon black was added to the mixed solution of the two metal precursors, and ultrasonically oscillated for 20 minutes to uniformly disperse the carbon black to obtain a carbon black dispersion;

[0020] (2) Under stirring, add 0.6mL of newly prepared 0.1M NaBH to the carbon black dispersion obtained in step (1) 4 solution, and continued stirring for 40 minutes, the reaction system was transferred to a clean test tube, static precipitation for 5 hours until the solid completely precipitated at the bottom of the test tube. After removing the supernatant, add 0.25 mL of Nafion solution with a mass fraction of 5% to the test tube, and disperse by ultrasonic vibration for 20 minutes to obtain 0.5 m...

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Abstract

The invention provides a method for preparing a PtPd / C composite material by loading PtPd nanoparticles on carbon black, and the prepared composite material is used as an electrode for the electrocatalytic oxidation reaction of alcohol. There are mainly the following two aspects, that is, preparing PtPd / C composite materials with different Pt:Pd composition ratios by chemical reduction method and using it as an electrode for the catalytic oxidation reaction of 1,2-propanediol. The preparation method of the composite material in the present invention is simple, the ratio of Pt and Pd in ​​the PtPd nanoparticles is easy to adjust, and the electrocatalytic activity of the prepared PtPd / C electrode is higher than that of Pt / C and Pd / C for the oxidation reaction of 1,2 propanediol electrode, while also reducing the amount of platinum used.

Description

technical field [0001] The invention belongs to the technical field of electrochemical electrode materials, in particular to a preparation method and application of a two-component metal composite electrode. Background technique [0002] Nanocomposites not only have unique chemical properties, but also can adjust the synergistic effect and interface effect of nanounits by modifying the surface of nanounits, so the application of nanocomposites has broad prospects. As an electrode material, it also has many advantages in the electrocatalytic oxidation reaction, and has gradually become the focus of electrode material research and development. Two-component metal alloy nanoparticles and core-shell nanoparticles are commonly used in the preparation of nanocomposites. The selection and composition ratio of different metal combinations will lead to different electrochemical activities. [0003] Platinum (Pt) is widely used in the preparation of electrodes for the study of elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/08C25B3/02B01J23/44H01M4/92C25B3/23
CPCY02E60/50
Inventor 金长春王忠宇董如林
Owner CHANGZHOU UNIV
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