CN202305468U - Normal-temperature electrochemical oxygen sensor - Google Patents
Normal-temperature electrochemical oxygen sensor Download PDFInfo
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- CN202305468U CN202305468U CN2011203950559U CN201120395055U CN202305468U CN 202305468 U CN202305468 U CN 202305468U CN 2011203950559 U CN2011203950559 U CN 2011203950559U CN 201120395055 U CN201120395055 U CN 201120395055U CN 202305468 U CN202305468 U CN 202305468U
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Abstract
The utility model provides a normal-temperature electrochemical oxygen sensor, which comprises a ceramic base plate, two groups of air inlet through holes, three pieces of gold conducting wire layers, a platinum electrode layer, a nafion solid electrolyte layer and a colloid protecting layer, wherein the two groups of air inlet through holes are arranged on the ceramic base plate, the platinum electrode layer consists of a counter electrode, a reference electrode and a work electrode, the three pieces of gold conducting wire layers are respectively cured on the ceramic base plate, two pieces of gold conducting wire layers in the three are respectively arranged at the hole edge peripheral positions of the two groups of the air inlet through holes, the counter electrode, the reference electrode and the work electrode of the platinum electrode layer are respectively cured on the three pieces of gold conducting wire layers, the counter electrode and the work electrode respectively correspond to the two groups of the air inlet through holes and are in coverage arrangement, the nafion solid electrolyte layer is cured on the platinum electrode layer, and the colloid protecting layer is cured on the nafion solid electrolyte layer. The normal-temperature electrochemical oxygen sensor has the advantages that the structure is simple, the sensitivity is high, and the lead pollution is avoided.
Description
Technical field
The utility model relates to a kind of oxygen sensor, specifically, has related to a kind of normal temperature electrochemistry oxygen gas sensor.
Background technology
Oxygen sensor detects principle, is used for detecting oxidized or the chemicals or the gas that decompose in chemical reaction based on electrochemical gas.At present; Normal temperature electrochemistry oxygen gas sensor on the market is lead-air galvanic cell type sensor; And lead is poisonous and harmful substance; The RoHS instruction of European Union is that the objectionable impurities illegal instruction was carried out in the whole Europe scope from July 1st, 2006, and will forbid in European Union from lead-air galvanic cell type sensor in 2016 comprehensively, and unleaded oxygen sensor plan meets the RoHS instruction of European Union fully; Therefore, developing unleaded oxygen sensor will be trend of the times, and it has met the RoHS instruction, can get around the RoHS barrier, helps to get into the European market.
Summary of the invention
The purpose of the utility model is the deficiency to prior art, thereby a kind of normal temperature electrochemistry oxygen gas sensor of simple in structure, highly sensitive, no lead contamination is provided.
To achieve these goals; The technical scheme that the utility model adopted is: a kind of normal temperature electrochemistry oxygen gas sensor, it includes ceramic substrate, be arranged on two groups of air inlet through holes on the said ceramic substrate, three golden conductor layers, by the platinum electrode layer that electrode, contrast electrode and working electrode are constituted, Nafion solid electrolyte layer and colloid protective seam; Wherein, three said golden conductor layers are solidificated in respectively on the said ceramic substrate, wherein two said golden conductor layers hole of being separately positioned on two groups of said air inlet through holes along around the position; Said platinum electrode layer electrode, contrast electrode and working electrode are solidificated in respectively on three said golden conductor layers, said to electrode and corresponding two groups of said air inlet through holes and the covering setting respectively of said working electrode; Said Nafion solid electrolyte layer is solidificated on the said platinum electrode layer, and said colloid protective seam is solidificated on the said Nafion solid electrolyte layer.
Based on above-mentioned, said ceramic substrate adopts small-sized sheet ceramic substrate structure.
The relative prior art of the utility model has substantive distinguishing features and progress, specifically, the utlity model has following advantage:
1, conductor layer and electrode layer are selected Precious Metals-Gold and platinum respectively for use, avoid the use of heavy metal lead, have stopped lead contamination; Solid electrolyte adopts the Nafion material, does not have dangerous, easy to operate;
2, Precious Metals-Gold, platinum and the Nafion solid electrolyte of this sensor use are the material of on-consumable type in this sensor systems, make that the life-span of sensor is longer.
Description of drawings
Fig. 1 is the structural representation of said normal temperature electrochemistry oxygen gas sensor.
Embodiment
Through embodiment, the technical scheme of the utility model is done further detailed description below.
As shown in Figure 1; A kind of normal temperature electrochemistry oxygen gas sensor, it includes ceramic substrate 1, be arranged on air inlet through hole 21 and air inlet through hole 22 on the said ceramic substrate 1, include the conductor layer of golden conductor layer 31, golden conductor layer 32, golden conductor layer 33, by the platinum electrode layer that electrode 41, contrast electrode 43 and working electrode 42 are constituted, Nafion solid electrolyte layer 5 and colloid protective seam 6;
Wherein, three said golden conductor layers are solidificated in respectively on the said ceramic substrate 1, wherein, said golden conductor layer 31, said golden conductor layer 32 is corresponding respectively and the hole that is arranged on said air inlet through hole 21 and said air inlet through hole 22 along around the position;
Said platinum electrode layer corresponding respectively and be solidificated on said golden conductor layer 31, said golden conductor layer 33, the said golden conductor layer 32 to electrode 41, contrast electrode 43 and working electrode 42, said to electrode 41 and the corresponding respectively said air inlet through hole 21 of said working electrode 42 with said air inlet through hole 22 and cover and be provided with;
Said Nafion solid electrolyte layer 5 is solidificated on the said platinum electrode layer, and said colloid protective seam 6 is solidificated on the said Nafion solid electrolyte layer 5;
Said ceramic substrate 1 adopts small-sized sheet ceramic substrate structure.
A kind of preparation method of normal temperature electrochemistry oxygen gas sensor, it may further comprise the steps:
Step 2, with the gold paste material through the printing or spraying method be solidificated on the said ceramic substrate, form three said golden conductor layers, wherein, under 650 ℃～1100 ℃, be cured processing, be 30 minutes～90 minutes set time;
Step 3, with the platinum slurry through the printing or spraying method be solidificated in respectively on three said golden conductor layers; Formation is by the platinum electrode layer that electrode, contrast electrode and working electrode are constituted; Wherein, under 50 ℃～300 ℃, be cured processing, be 30 minutes～90 minutes set time;
Step 4, Nafion solution is solidificated on the said platinum electrode layer through spraying method, forms said Nafion solid electrolyte layer, wherein, under 50 ℃～80 ℃, be cured processing, be 10 minutes～90 minutes set time;
This preparation method mainly adopts the mode of production of slurry printing or spraying, and technology is simple, is easy to make, and product stability and consistance are more easy to control.
Should be noted that at last: above embodiment only in order to the explanation the utility model technical scheme but not to its restriction; Although with reference to preferred embodiment the utility model has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can make amendment to the embodiment of the utility model perhaps is equal to replacement to the part technical characterictic; And not breaking away from the spirit of the utility model technical scheme, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (2)
1. normal temperature electrochemistry oxygen gas sensor is characterized in that: it includes ceramic substrate, be arranged on two groups of air inlet through holes on the said ceramic substrate, three golden conductor layers, by the platinum electrode layer that electrode, contrast electrode and working electrode are constituted, Nafion solid electrolyte layer and colloid protective seam; Wherein, three said golden conductor layers are solidificated in respectively on the said ceramic substrate, wherein two said golden conductor layers hole of being separately positioned on two groups of said air inlet through holes along around the position; Said platinum electrode layer electrode, contrast electrode and working electrode are solidificated in respectively on three said golden conductor layers, said to electrode and corresponding two groups of said air inlet through holes and the covering setting respectively of said working electrode; Said Nafion solid electrolyte layer is solidificated on the said platinum electrode layer, and said colloid protective seam is solidificated on the said Nafion solid electrolyte layer.
2. normal temperature electrochemistry oxygen gas sensor according to claim 1 is characterized in that: said ceramic substrate adopts small-sized sheet ceramic substrate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203950559U CN202305468U (en) | 2011-10-18 | 2011-10-18 | Normal-temperature electrochemical oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203950559U CN202305468U (en) | 2011-10-18 | 2011-10-18 | Normal-temperature electrochemical oxygen sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305468U true CN202305468U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203950559U Expired - Lifetime CN202305468U (en) | 2011-10-18 | 2011-10-18 | Normal-temperature electrochemical oxygen sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN202305468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507699A (en) * | 2011-10-18 | 2012-06-20 | 郑州炜盛电子科技有限公司 | Normal-temperature electrochemical oxygen sensor and preparation method thereof |
-
2011
- 2011-10-18 CN CN2011203950559U patent/CN202305468U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507699A (en) * | 2011-10-18 | 2012-06-20 | 郑州炜盛电子科技有限公司 | Normal-temperature electrochemical oxygen sensor and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |