Novel electrochemical carbon monoxide gas sensor electrode and preparation method thereof
A gas sensor and carbon monoxide technology, applied in the direction of material electrochemical variables, air quality improvement, etc., can solve the problems of high price of precious metals, complicated preparation process of composite powder, etc., and achieve the effect of simple preparation process, high sensitivity and low price
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[0016] The electrode preparation materials include nano-platinum, polyvinylpyrrolidone, graphene, N-methylpyrrolidone, polytetrafluoroethylene emulsion and carrier, and the ratio of nano-platinum, polyvinylpyrrolidone, graphene, and N-methylpyrrolidone is 1:1 : 5:70~1:1:7:95, the mass ratio of polytetrafluoroethylene emulsion is 5~10%, and the carrier is a kind of polytetrafluoroethylene film and PVC separator.
[0017] A preparation method of a novel electrochemical carbon monoxide gas sensor electrode, comprising the following steps: S1: combine nano-platinum, polyvinylpyrrolidone, graphene and N-methylpyrrolidone according to 1:1:5:70~1:1:7: The mass ratio of 95 is ultrasonically mixed for 2 to 4 minutes to obtain A; S2: Add 5-10% PTFE emulsion (60%) in A with a glass rod and quickly stir for 15 to 20 seconds to obtain A. B;
[0018] S3: Use screen printing technology to print B on a PTFE film or a PVC separator to obtain an initial electrode, then place the electrode in a...
Embodiment 1
[0021] At room temperature, 0.1 g of nano-platinum, 0.1 g of polyvinylpyrrolidone, 0.5 g of graphene and 90 ml of N-methylpyrrolidone were ultrasonically mixed for 2 minutes to obtain A, and then 5 g of polytetrafluoroethylene emulsion (60%) was added to the mixture. In A, stir quickly with a glass rod for 15 seconds and mix evenly to obtain B. Use screen printing technology to print B on a PTFE film to obtain an initial electrode, and then place the electrode in a vacuum drying box at 65°C for 100 min, take it out and use Press 20Mpa for 20 seconds with a press, take it out and place it on a glass plate to dry naturally at room temperature to obtain a fixed electrode.
Embodiment 2
[0023] At room temperature, 0.1 g of nano-platinum, 0.1 g of polyvinylpyrrolidone, 0.5 g of graphene and 90 ml of N-methylpyrrolidone were ultrasonically mixed for 2 minutes to obtain A, and then 5 g of polytetrafluoroethylene emulsion (60%) was added to the mixture. In A, stir quickly with a glass rod for 15 seconds and mix evenly to obtain B, and use screen printing technology to print B on a PVC separator to obtain an initial electrode, then place the electrode in a vacuum drying box at 60 °C for 100 min, take it out and use a press Press 20Mpa for 15 seconds, take it out and place it on a glass plate to dry naturally at room temperature to obtain a fixed electrode.
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