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Preparation method of pt/ito electrode
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A technology of electrode and working electrode, which is applied in the field of Pt/ITO electrode preparation, can solve the problems of reduced conductivity, poor binding force between particles and matrix, and affecting the performance of precious metals, so as to achieve improved binding force, good stability, and improved electrochemical performance. performance effect
Inactive Publication Date: 2016-07-06
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
However, the assembly of noble metal particles on the surface of ITO has the limitation of poor bonding between the particles and the matrix.
In order to enhance the binding force, researchers mostly assemble metal particles onto the surface of ITO by introducing organic adhesive molecules, but such an organic adhesive layer will seriously affect the performance of noble metals and will significantly reduce the conductivity.
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Embodiment 1
[0030] This embodiment relates to a method for preparing a Pt / ITO electrode, comprising the following steps:
[0031] Step 1: Prepare the working electrode,
[0032] (a) first clean the ITO, put it into an acetone solution cleaning agent, perform ultrasonic treatment, then put it into deionized water, and perform ultrasonic treatment to obtain product A;
[0033] (b) bonding the copper wire to the conductive surface of the product A of step (a) with an adhesive tape to obtain the working electrode;
[0034] Step 2: Assemble the three-electrode system,
[0035] The Pt counter electrode, mercurous sulfate reference electrode, working electrode and electrolyte are connected to form a three-electrode system; the electrolyte is composed of H 2 PtCl 6 solution with H 2 SO 4 The solution is mixed;
[0036] Step 3: Put the three-electrode system in step 2 into an ultrasonic generator with a power of 80W, the reaction time is 2000s, and the current density is constant at 0.3mA / cm...
Embodiment 2
[0041] This embodiment relates to a method for preparing a Pt / ITO electrode, comprising the following steps:
[0042] Step 1: Prepare the working electrode,
[0043] (a) first clean the ITO, put it into ethylene glycol monoethyl ether solution (acetonitrile solution or pyridine solution) cleaning agent, perform ultrasonic treatment, then put it into deionized water, and perform ultrasonic treatment to obtain product A;
[0044] (b) bonding the copper wire with the conductive surface of the product A of step (a) with adhesive tape to obtain the working electrode;
[0045] Step 2: Assemble the three-electrode system,
[0046] The Pt counter electrode, mercurous sulfate reference electrode, working electrode and electrolyte are connected to form a three-electrode system; the electrolyte is composed of H 2 PtCl 6 solution with H 2 SO 4 The solution is mixed;
[0047] Step 3: Put the three-electrode system in step 2 into an ultrasonic generator with a power of 200W, the react...
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Abstract
The invention discloses a manufacturing method for a Pt / ITO (Indium Tin Oxide) electrode. The method comprises the following steps: a step I of preparing a working electrode; a step II of assembling a tri-electrode system; and a step III of putting the tri-electrode system in the step II to an ultrasonic generator to generate ultrasonic electro-deposition reaction to obtain the final product Pt / ITO electrode, wherein the tri-electrode system comprises a Pt counter electrode, a mercurous sulfate reference electrode, an ITO working electrode as well as an electrolyte which is formed by mixing H2PtCl6 and H2SO4. According to the manufacturing method disclosed by the invention, ultrasonic fields are introduced in the elector-deposition process, so that the ultrasonic electro-deposition reaction is achieved; the current efficiency is enhanced by utilizing the cavitation effect of the ultrasonic waves; meanwhile, the binding force of the ITO surface electro-deposition metal particles is improved; Pt is a catalyst; and ITO is a conductive substrate with excellent performances and low price. The manufacturing method disclosed by the invention is simple in steps, easy to operate, low in cost, environment-friendly, remarkable in effect, good in stability and good in application prospect.
Description
technical field [0001] The invention relates to an electrode preparation method in the technical field of electrocatalysis, in particular to a preparation method of a Pt / ITO electrode. Background technique [0002] Conductive matrix materials loaded with dispersed noble metal micro / nanoparticles have important application prospects in the fields of electrocatalysis, energy, biology, optics and electronic devices. In recent years, the use of indium tin oxide (ITO) transparent conductive films with excellent electrical and optical properties as conductive supports has attracted rapid attention. Compared with traditional conductive substrates, in addition to the advantages of low cost, ITO also has the advantages of good conductivity, high visible light transmittance, wide electrochemical window and stable physical and chemical properties. However, the assembly of noble metal particles on the surface of ITO has the limitation of poor binding force between the particles and the...
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