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Screen-printed electrode based on graphene conductive ink and processing method thereof

A screen printing electrode and conductive ink technology, applied in the direction of material electrochemical variables, etc., can solve the problems of cumbersome preparation process, high preparation cost, limited improvement of electron transfer and catalytic activity, and achieve improved sensitivity, large specific surface area, Effect of improving electron transfer performance

Active Publication Date: 2016-02-24
QINGDAO REALEADER ADVANCED MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned technical problems such as limited enhancement of electron transfer and catalytic activity effects, high preparation cost, and cumbersome preparation process, the present invention proposes a method with reasonable design, simple structure, low cost, convenient processing, and good electron transfer and catalytic activity effects. A kind of screen printing electrode based on graphene conductive ink and processing method thereof

Method used

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  • Screen-printed electrode based on graphene conductive ink and processing method thereof
  • Screen-printed electrode based on graphene conductive ink and processing method thereof

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Embodiment 1

[0030] Example 1, such as figure 1 As shown, the present embodiment provides a screen printing electrode based on graphene conductive ink, including a substrate. The shape of the substrate is the shape of a common substrate in the market. Printed insulating materials can be used for electrode substrates, preferably polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE) or PET plastics, etc., and the substrates are printed with working electrodes, counter electrodes and conductive leads (the specific layout is as follows: figure 1 As shown in Figure a, this type of layout is also a common layout in the market, and of course other layouts can also be used), the screen printing electrode provided in this embodiment is a three-electrode structure, the working electrode and the conductive lead and The electrical connection between the counter electrode and the conductive lead wire, and the lead wire between the working electrode and the conductive lead wire and the counter electr...

Embodiment 2

[0034] Embodiment 2: This embodiment provides a kind of preparation method of the screen printing electrode based on graphene conductive ink:

[0035]In the embodiment process provided by the present invention, the screen printing machine used is a plane screen printing machine produced by Qingdao Ou Ruier Automation Equipment Co., Ltd., and the model is ORE-2030. In this embodiment, some steps are also combined with the screen printing Some functions of the screen printing machine, and the structure of other screen printing machines may be inconsistent with the structure provided in this embodiment, but it cannot affect the scope of protection of the present invention.

[0036] 1. Substrate pretreatment

[0037] (1) Ultrasonic cleaning of the cut PVC substrate with acetone for 15 minutes each time to remove dirt on the surface, and then ultrasonic cleaning with absolute ethanol once for 5 minutes each time, and drying naturally.

[0038] 2. Electrode printing

[0039] (2) w...

Embodiment 3

[0061] Embodiment 3: This embodiment provides a kind of preparation method of the screen printing electrode based on graphene conductive ink:

[0062] 1. Substrate pretreatment

[0063] (1) Ultrasonic clean the cut PTFE substrate twice with acetone for 10 minutes each time to remove the dirt on its surface, then ultrasonically clean it twice with absolute ethanol for 10 minutes each time, and let it dry naturally.

[0064] 2. Electrode printing

[0065] (2) will be used for printing figure 1 The stencil of the pattern in picture a is fixed on the horizontal workbench of the screen printing machine, the distance between the stencil and the horizontal workbench is 3cm, and the squeegee angle is adjusted to 50 degrees.

[0066] (3) Put the naturally dried substrate on the surface of the workbench, turn on the air pump, and use negative pressure adsorption to ensure that the substrate is fixed and prevent the misalignment problem caused by the movement of the substrate during pr...

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Abstract

The invention belongs to the field of heavy metal detection sensor, and especially relates to a screen-printed electrode based on graphene conductive ink and a processing method thereof. The screen-printed electrode comprises a substrate, and a working electrode, a counter electrode, and a conductive lead wire are printed on the substrate. The working electrode electrically communicates with the conductive lead wire by a lead wire, and the counter electrode electrically communicates with the conductive lead wire by the lead wire. The materials of the working electrode, the counter electrode, and the conductive lead wire are graphene conductive ink. The screen-printed electrode uses graphene which has large specific surface area and high electrocatalytic and electrochemical activities as the materials of the working electrode, the counter electrode, the conductive lead wire, and the lead wire, so that the electron transfer performance of the molecule or ion to be detected in an electrode reaction interface is improved. Moreover, the screen-printed electrode prepared form graphene conductive ink is beneficial to the adsorption of the heavy metal ion and the modification of the surface functionalization.

Description

technical field [0001] The invention belongs to the field of heavy metal detection sensors, and relates to a screen printing electrode, in particular to a screen printing electrode based on graphene conductive ink and a processing method thereof. Background technique [0002] In recent years, with the frequent occurrence of heavy metal exceeding standards in the fields of food and environmental monitoring, people have paid more and more attention to food safety and environmental hygiene issues. At the same time, people also strongly need a fast, convenient, portable and accurate heavy metal monitoring means of analysis. The heavy metal ion sensor has become the first choice for people to quickly detect. As a disposable electrode that is simple to make, can be mass-produced, inexpensive, has good detection reproducibility, and high sensitivity, the screen-printed electrode solves the problem of heavy metal ion sensors. On-line sensor monitoring of response stability, reprodu...

Claims

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Application Information

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IPC IPC(8): G01N27/30
Inventor 吕艳红王霄飞孟良孙明娟侯士峰
Owner QINGDAO REALEADER ADVANCED MATERIALS TECH
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