All-solid state dissolved oxygen sensor and preparation method thereof
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A dissolved oxygen sensor and all-solid-state technology, which is applied to instruments, screen printing methods, and photoplate-making processes on patterned surfaces. Ease of operation and simplification of the production process
Inactive Publication Date: 2010-11-10
ZHEJIANG UNIV
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Traditional electrodes are bulky, costly, and require a lot of sample solutions.
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Embodiment 1
[0053] The preparation of a kind of all-solid-state dissolved oxygen sensor comprises the following steps:
[0054] (1) On the polypropylene substrate covered with a layer of gold foil, laser marking method is used to etch such as figure 1 The reference electrode, the working electrode and the counter electrode of the shape shown, wherein the reaction electrodes of the reference electrode, the working electrode and the counter electrode are all rectangles with a length of 18mm and a width of 4mm;
[0055] (2) Print a layer of silver paste on the reaction electrode of the reference electrode by screen printing, the mesh cloth used is 420 mesh, the mesh distance is 1.5mm, the scraper hardness is 80°, the scraper angle is 64.3°, the scraper Speed 8mm / s, scraper pressure 4kg / cm 2 After printing, dry the substrate in the oven in the dark for 2 minutes, and the oven temperature is 50°C to form a silver film;
[0056] (3) printing insulating material on the substrate, the insulat...
Embodiment 2
[0062] The preparation of a kind of all-solid-state dissolved oxygen sensor comprises the following steps:
[0063] (1) On the polypropylene substrate covered with a layer of gold foil, laser marking method is used to etch such as figure 1 The reference electrode, the working electrode and the counter electrode of the shape shown, wherein the reaction electrodes of the reference electrode, the working electrode and the counter electrode are all rectangles with a length of 18mm and a width of 4mm;
[0064] (2) Print a layer of silver paste on the reaction electrode of the reference electrode by screen printing, the mesh cloth used is 420 mesh, the mesh distance is 1.5mm, the scraper hardness is 80°, the scraper angle is 64.3°, the scraper Speed 8mm / s, scraper pressure 4kg / cm 2 , dry in an oven for 2 minutes in the dark, and the oven temperature is 50°C to form a silver film;
[0065] (3) printing insulating material on the substrate, the insulating material covers the perip...
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Abstract
The invention provides an all-solid state dissolved oxygen sensor, which comprises a substrate, and reference electrode, a counter electrode and a working electrode parallelly positioned on the substrate, wherein the reference electrode consists of a reactive electrode, a silver/silver chloride electrode positioned on the reactive electrode and a lead wire connected with the reactive electrode; the counter electrode and the working electrode consist of reactive electrodes and lead wires connected with the reactive electrodes; an insulating layer capable of exposing the silver/silver chloride electrode, the reactive electrode of the counter electrode and the working electrode covers on the substrate; an electrolytic layer covers on the silver/silver chloride electrode, the reactive electrode of the counter electrode and the reactive electrode of the working electrode; and an oxygen permeable membrane covers on the electrolytic layer. In the all-solid state dissolved oxygen sensor, three electrodes of the conventional dissolved oxygen sensor are integrated on one substrate so as to realize the miniaturization of the dissolved oxygen sensor, and the all-solid state dissolved oxygen sensor has the advantages of convenient carrying, simple operation and quick response. The invention also provides a preparation method for the all-solid state dissolved oxygen sensor, which has the advantages of simplifying a manufacturing process, reducing manufacturing cost, and being suitable for mass production.
Description
technical field [0001] The invention relates to the technical field of electrochemical sensors, in particular to an all-solid dissolved oxygen sensor and a preparation method thereof. Background technique [0002] Physiological oxygen is an essential component of human metabolism. Sufficient oxygen inhalation and sufficient dissolved oxygen in arterial blood are crucial to sustain life. Clinically, blood dissolved oxygen saturation is an important physiological indicator of the human body. Blood oxygen saturation measurement using traditional blood gas analysis methods and spectrophotometric methods has high accuracy, but the measurement process is complicated and cumbersome, costly, and takes a long time. Often this detection takes several hours. When it is necessary to detect the blood oxygen concentration of an emergency patient, such a long detection time will bring life danger to the patient. [0003] In 1956, Clark proposed the film-covered oxygen electrode technolog...
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