Hydrogen sensor and application thereof

[0024] Example 1

[0025] Such as figure 1As shown, a hydrogen sensor, the sensor is a three-electrode system, the sensor including housing 1, upper cover 2, operating electrode 3, counter electrode 4, reference electrode 5, working electrode pin 6, to electrode The foot 7, the reference electrode pin 8, dust breathable film 9, the anti-vibration layer 10, the water absorbing material layer 11, the working electrode 3, the counter electrode 4, the reference electrode 5 are all by PTFE film 12 (polytetrafluoro) The vinyl film) and a platinum black 13 coated on one side; the upper cover 2 and the housing 1 are fastened to form an internal cavity structure; the top cover 2 is provided with a diffusion hole 14, and the dust-free breathable film 9 is disposed on the upper cover. 2 top and cover the diffusion hole 14; the operating electrode pin 6 is disposed at the bottom of the housing 1 on the electrode pin 7 and the reference electrode pin 8; the interior cavity of the housing 1 is in the uppermost step 10 The counter electrode 4, the reference electrode 5, the water absorbing material layer 11, the working electrode 3, and the electrodes 4, the reference electrode 5 on the same plane and both, the absorbing material layer 11 adsorbs the electrolyte - The room temperature ionic liquid N, N, N-trimethyl-N-sulfurium hydrogen sulfate, the platinum black surface of the working electrode 3, the platinum black surface of the electrode 4, the platinum black surface and the suction material of the reference electrode 5 The layer 11 is in contact; the working electrode 3, the counter electrode 4, and the reference electrode 5 are connected to the corresponding working electrode pin 6 by the lead 15, the electrode lead 7, the reference electrode pin 8; upper cover 2 and the working electrode 3 The PTFE film 12 surface is provided with an O-seal ring 16. Among them, the anti-vibration layer 10, the water absorbing material layer 11 is a glass cotton pad having a thickness of 0.5 mm, a radius of 0.5 cm, and a water absorbing material layer 11 adsorbs 200 μL of an electrolyte.

[0026] Sensor preparation process:

[0027] 10 g of platinum black, add 5 mL of 60% (mass percent) polytetrafluoroethylene emulsion, stir well into a slurry; printing the slurry on the PTFE film 12, after washing, drying and cutting The working electrode 3 is obtained, the counter electrode 4, and the reference electrode 5 are obtained. according to figure 1 As shown, the anti-vibration layer 10, the counter electrode 4, the reference electrode 5, the water absorbing material layer 11, and the working electrode 3 are inserted into the housing 1, and the electrode lead 15 and the corresponding electrode are ensured during the electrode. Good contact, press the O-seal ring 16, load the upper cover 2, seal the upper cover 2, to obtain a three-electrode system sensor.