CN107796860B - Current type solid electrolyte oxygen analysis sensor - Google Patents
Current type solid electrolyte oxygen analysis sensor Download PDFInfo
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- CN107796860B CN107796860B CN201610756294.XA CN201610756294A CN107796860B CN 107796860 B CN107796860 B CN 107796860B CN 201610756294 A CN201610756294 A CN 201610756294A CN 107796860 B CN107796860 B CN 107796860B
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- solid electrolyte
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- 239000001301 oxygen Substances 0.000 title claims abstract description 53
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 53
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000007784 solid electrolyte Substances 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 239000000919 ceramic Substances 0.000 claims abstract description 25
- 239000003792 electrolyte Substances 0.000 claims abstract description 18
- 230000000903 blocking effect Effects 0.000 claims abstract 4
- 239000011533 mixed conductor Substances 0.000 claims description 23
- 230000004888 barrier function Effects 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 3
- 239000007789 gas Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 4
- -1 oxygen ions Chemical class 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/409—Oxygen concentration cells
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
The invention discloses a current type solid electrolyte oxygen analysis sensor in the technical field of chemical gas sensors, which comprises a cathode plate, wherein a ceramic heating device is arranged at the bottom of the cathode plate, an electrolyte blocking layer is arranged at the top of the cathode plate, an anode plate is arranged at the top of the electrolyte blocking layer, and electrode wires are arranged on the right side of the cathode plate and the right side of the anode plate.
Description
Technical Field
The invention relates to the technical field of chemical gas sensors, in particular to a current type solid electrolyte oxygen analysis sensor.
Background
The oxygen sensor for the automobile is one of important components of an engine control system, the air-fuel ratio of the automobile engine is adjusted through the oxygen sensor, and the combustion process in the engine is controlled, so that the emission of pollutants can be reduced, and the combustion efficiency of fuel can be improved.
An oxygen sensor is an indispensable element on an engine in which a three-way catalytic converter is currently used to reduce exhaust pollution. The automobile oxygen sensor is a key sensing component in the control system of the electronic fuel injection engine, is a key part for controlling the emission of automobile exhaust, reducing the environmental pollution of automobiles and improving the fuel combustion quality of the automobile engine, and is arranged on an engine exhaust pipe. Currently, a zirconia concentration battery type oxygen sensor is generally used, but such a sensor can only control combustion around the stoichiometric air-fuel ratio. If the engine is controlled to burn in a lean combustion zone in an oxygen-enriched state, not only can the emission of pollutants be reduced more effectively, but also the combustion efficiency can be further improved, and because of the logarithmic relationship between the signal of the concentration battery type oxygen sensor and the partial pressure of oxygen, the signal change is small and insensitive in the whole lean combustion zone.
The existing oxygen sensor has insufficient sensitivity, long response time, insufficient miniaturization and portability, and particularly can not effectively detect and analyze oxygen in human respiratory gas in medical use.
Disclosure of Invention
The invention aims to provide a chemical gas sensor, which solves the problems that the oxygen sensor proposed in the background art is not enough in sensitivity, long in response time, not small enough and portable, and particularly cannot effectively detect and analyze oxygen in human respiratory gas in medical use.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a current-type solid electrolyte oxygen analysis sensor, includes the negative pole piece, the bottom of negative pole piece is provided with ceramic heating device, the top of negative pole piece is provided with electrolyte barrier layer, the top of electrolyte barrier layer is provided with the anode strip, the right side of negative pole piece and the right side of anode strip all are provided with the electrode line, the right-hand member of electrode line is provided with the joint.
Preferably, the ceramic heating device comprises a ceramic matrix layer, a heating component is inlaid at the top of the ceramic matrix layer, a glaze layer is arranged at the top of the heating component, and the glaze layer is arranged at the top of the ceramic matrix layer.
Preferably, the electrolyte barrier layer comprises a solid electrolyte layer, a porous layer is arranged at the bottom of the solid electrolyte layer, and a mixed conductor layer is arranged in an inner cavity of the porous layer.
Preferably, the cathode sheet and the anode sheet are platinum electrode sheets.
Preferably, the heating assembly comprises two groups of heating spiral pipes, the two groups of heating spiral pipes are symmetrically arranged, one ends of the two groups of heating spiral pipes are connected with each other, the other ends of the spiral heating pipes are connected with wires, and wire connectors are arranged at the other ends of the wires.
Preferably, the mixed conductor layer is an oxygen ion-electron mixed conductor layer.
Preferably, the solid electrolyte layer is YSZ solid electrolyte.
Compared with the prior art, the invention has the beneficial effects that: the invention has simple structure, convenient use, ingenious design, reliable use, strong practicability and novelty, the diffusion barrier layer is formed by the porous layer and the mixed conductor layer, and the diffusion barrier layer is tightly combined with the solid electrolyte layer, so that the response time of the sensor is greatly shortened, the sensitivity is greatly improved, the efficiency of the sensor is higher, the ceramic heating device is adopted for heating, the temperature of a hot surface is ensured to be uniform, hot spots and cold spots of equipment are eliminated, the invention has the advantages of energy saving, short heating time, long service life, good heat preservation performance, strong mechanical performance, corrosion resistance, antimagnetic field and the like, and the whole sensor is miniaturized, has portability, high sensitivity, light weight and low manufacturing cost, can detect 'breathing to breathing', and even has strong practicability in oxygen analysis in one single breath, and can be produced and used in a large scale.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a ceramic heating device according to the present invention;
FIG. 3 is a schematic view of an electrolyte barrier layer structure according to the present invention;
FIG. 4 is a schematic diagram of a heating assembly according to the present invention;
fig. 5 is an exploded view of the structure of the present invention.
In the figure: 1. the ceramic heating device comprises a ceramic heating device, an 11 ceramic substrate layer, a 12 heating component, a 121 heating spiral tube, 122 wires, 123 wire joints, a 13 glaze layer, a 2 cathode plate, a 3 electrolyte barrier layer, a 31 solid electrolyte layer, a 32 porous layer, a 33 mixed conductor layer, a 4 anode plate, a 5 electrode wire and a 6 joint.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a solid-state electrolyte oxygen analysis sensor of electric current, includes negative pole piece 2, the bottom of negative pole piece 2 is provided with ceramic heating device 1, the top of negative pole piece 2 is provided with electrolyte barrier layer 3, the top of electrolyte barrier layer 3 is provided with anode strip 4, the right side of negative pole piece 2 and the right side of anode strip 4 all are provided with electrode line 5, the right-hand member of electrode line 5 is provided with joint 6.
Wherein the ceramic heating device 1 comprises a ceramic substrate layer 11, a heating component 12 is convenient to install, the top of the ceramic substrate layer 11 is inlaid with the heating component 12, the top of the heating component 12 is provided with a glaze layer 13, the glaze layer 13 is arranged at the top of the ceramic substrate layer 11, heating performance is improved, the heating component 12 is covered, the heating component 12 is prevented from being exposed in air, heating effect is poor, the electrolyte barrier layer 3 comprises a solid electrolyte layer 31, electrolysis is convenient to conduct, a sensor is enabled to work, the bottom of the solid electrolyte layer 31 is provided with a porous layer 32, the inner cavity of the porous layer 32 is provided with a mixed conductor layer 33, the porous layer 32 and the mixed conductor layer 33 form a diffusion barrier layer, oxygen passing can be blocked, oxygen concentration can be conveniently measured, the cathode plate 2 and the anode plate 4 are both platinum electrode plates, the electrolysis reaction is convenient to carry out, and the current between the two electrodes is measured at the same time, so that the concentration of oxygen is measured according to the linear relation between the current and the concentration of oxygen, the heating component 12 comprises two groups of heating spiral pipes 121, the heating is convenient, the two groups of heating spiral pipes 121 are symmetrically arranged, one ends of the two groups of heating spiral pipes 121 are mutually connected, the other ends of the spiral heating pipes 121 are respectively connected with a wire 122, the spiral heating pipes 121 are conveniently electrified, the other ends of the wires 122 are respectively provided with a wire connector 123, the power supply is convenient to connect, the mixed conductor layer 33 is an oxygen ion-electron mixed conductor layer, the migration of oxygen through oxygen vacancies is convenient, the diffusion of oxygen in the mixed conductor layer 33 is much slower than that in a gas phase, the mixed conductor layer 33 is covered on the cathode sheet 2, the oxygen supply speed to the cathode sheet 2 can be effectively limited, and becomes the speed limiting link of oxygen transfer, therefore, the output electric signal of the sensor and the partial pressure of the ambient oxygen can be in a linear relation, the problem of sensor blockage can not occur in the use process of the sensor, and the solid electrolyte layer 31 is YSZ solid electrolyte, so that the electrolysis is convenient to carry out.
Working principle: when the ceramic heating device is used, the ceramic heating device 1 is used for heating, so that the temperature of a hot surface is uniform, hot spots and cold spots of equipment are eliminated, and the ceramic heating device has the advantages of energy saving, short heating time, long service life, good heat preservation performance, strong mechanical performance, corrosion resistance, magnetic field resistance and the like, wherein the lead connectors 123 are respectively connected with the anode and the cathode of a power supply, the lead connectors 123 transmit electric energy to the lead wires 122, the lead wires 122 transmit electric energy to the heating spiral tube 121, the heating spiral tube 121 emits heat, and the heat is transmitted through the glaze layer 13, so that the heat distribution is more uniform; meanwhile, the cathode plate 2 is connected with the cathode of a power supply, the anode plate 4 is connected with the anode of the power supply, the voltage and the temperature are kept constant through the electrode wire 5 and the connector 6, the temperature is higher than 450 ℃, then the electrolysis reaction can occur, a diffusion barrier layer formed by the porous layer 32 and the mixed conductor layer 33 has good conductivity, namely the potential difference between the top and the bottom of the diffusion barrier layer is very small, the voltage is actually applied to the top and the bottom of the solid electrolyte layer 31, so that the solid electrolyte layer 31 and the cathode plate 2 and the anode plate 4 form an oxygen pumping battery, electrons are received by the porous layer 32 and the mixed conductor layer 33 at the contact position of the solid electrolyte layer 31, negative divalent oxygen ions are formed, under the pushing of the potential gradient, oxygen molecules are formed after the discharge, and the oxygen molecules are continuously pumped to the anode plate 4 at the contact position of the porous layer 32 and the mixed conductor layer 33, and the oxygen molecules enter the external atmosphere, then the oxygen at the contact position of the porous layer 32 and the mixed conductor layer 33 and the solid electrolyte layer 31 is continuously reduced, the oxygen at the contact position of the porous layer 32 and the mixed conductor layer 33 and the oxygen ions at the bottom of the oxygen conductor layer 33 is completely moved to the oxygen-mixed conductor layer 33 at the bottom of the oxygen-mixed conductor layer 33 under the driving concentration gradient, and the oxygen ions at the contact position of the porous layer 33 and the oxygen ions at the bottom of the oxygen layer 33 are completely at the positive concentration and the oxygen concentration and the mixed conductor layer at the bottom of the oxygen concentration and the mixed conductor layer 33; based on the linear relationship between the oxygen concentration and the current, the oxygen concentration can be measured by measuring the current between the cathode sheet 2 and the anode sheet 4.
The sensor has the size of about 20x3.5x0.5mm, is miniaturized, has portability, high sensitivity, light weight and low manufacturing cost, can detect 'breath to breath', can analyze oxygen even in a single breath, has strong practicability, and can be produced and used in a large scale.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A amperometric solid-state electrolyte oxygen analysis sensor comprising a cathode sheet (2), characterized in that: the ceramic heating device is characterized in that a ceramic heating device (1) is arranged at the bottom of the cathode sheet (2), an electrolyte blocking layer (3) is arranged at the top of the cathode sheet (2), an anode sheet (4) is arranged at the top of the electrolyte blocking layer (3), electrode wires (5) are arranged on the right side of the cathode sheet (2) and the right side of the anode sheet (4), and a joint (6) is arranged at the right end of the electrode wires (5);
the electrolyte barrier layer (3) comprises a solid electrolyte layer (31), a porous layer (32) is arranged at the bottom of the solid electrolyte layer (31), and a mixed conductor layer (33) is arranged in an inner cavity of the porous layer (32);
the mixed conductor layer (33) is an oxygen ion-electron mixed conductor layer;
the cathode sheet (2) and the anode sheet (4) are platinum electrode sheets.
2. The amperometric solid state electrolyte oxygen analysis sensor of claim 1, wherein: the ceramic heating device (1) comprises a ceramic matrix layer (11), a heating component (12) is inlaid at the top of the ceramic matrix layer (11), a glaze layer (13) is arranged at the top of the heating component (12), and the glaze layer (13) is arranged at the top of the ceramic matrix layer (11).
3. The amperometric solid state electrolyte oxygen analysis sensor of claim 2, wherein: the heating assembly (12) comprises two groups of heating spiral pipes (121), the two groups of heating spiral pipes (121) are symmetrically arranged, one ends of the two groups of heating spiral pipes (121) are connected with each other, the other ends of the heating spiral pipes (121) are connected with wires (122), and wire connectors (123) are arranged at the other ends of the wires (122).
4. The amperometric solid state electrolyte oxygen analysis sensor of claim 1, wherein: the solid electrolyte layer (31) is a YSZ solid electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610756294.XA CN107796860B (en) | 2016-08-29 | 2016-08-29 | Current type solid electrolyte oxygen analysis sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610756294.XA CN107796860B (en) | 2016-08-29 | 2016-08-29 | Current type solid electrolyte oxygen analysis sensor |
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| Publication Number | Publication Date |
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| CN107796860A CN107796860A (en) | 2018-03-13 |
| CN107796860B true CN107796860B (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610756294.XA Active CN107796860B (en) | 2016-08-29 | 2016-08-29 | Current type solid electrolyte oxygen analysis sensor |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11281611A (en) * | 1998-03-31 | 1999-10-15 | Osaka Gas Co Ltd | Limitation current type oxygen sensor and oxygen detection method |
| CN1278064A (en) * | 1999-06-22 | 2000-12-27 | 日本特殊陶业株式会社 | Gas sensor contg. ceramic solid electrolytes, and method for making same |
| JP2003279531A (en) * | 2002-03-27 | 2003-10-02 | Kyocera Corp | Oxygen sensor element |
| DE202004015400U1 (en) * | 2004-10-04 | 2004-12-16 | Aceos Gmbh | Oxygen sensor for e.g. medical equipment has electrically insulated base plate under first layer which is solid electrolyte and second layer with two electrodes |
| JP2006343297A (en) * | 2005-06-10 | 2006-12-21 | Ngk Spark Plug Co Ltd | Lamination-type gas sensor element and gas sensor |
| CN101718743A (en) * | 2009-11-30 | 2010-06-02 | 宁波大学 | Method for preparing mixed conductor dense diffusion barrier-type oxygen sensor |
| CN101936942A (en) * | 2010-08-25 | 2011-01-05 | 宁波大学 | Limiting current oxygen sensor |
| CN101995425A (en) * | 2010-10-30 | 2011-03-30 | 无锡隆盛科技有限公司 | Nitrogen oxide sensor chip for automobile |
| TW201213799A (en) * | 2010-09-29 | 2012-04-01 | Univ Nat Taipei Technology | Amperometric oxygen sensor |
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| CN104132986A (en) * | 2013-05-02 | 2014-11-05 | E+E电子有限责任公司 | Amperometric gas sensor |
| CN206387763U (en) * | 2016-08-29 | 2017-08-08 | 南京瀚雅健康科技有限公司 | A kind of current type solid electrolyte oxygen analyte sensors |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1026502B1 (en) * | 1999-02-03 | 2007-12-19 | NGK Spark Plug Company Limited | Solid electrolyte containing insulating ceramic grains for gas sensor, and method for fabricating same |
-
2016
- 2016-08-29 CN CN201610756294.XA patent/CN107796860B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11281611A (en) * | 1998-03-31 | 1999-10-15 | Osaka Gas Co Ltd | Limitation current type oxygen sensor and oxygen detection method |
| CN1278064A (en) * | 1999-06-22 | 2000-12-27 | 日本特殊陶业株式会社 | Gas sensor contg. ceramic solid electrolytes, and method for making same |
| JP2003279531A (en) * | 2002-03-27 | 2003-10-02 | Kyocera Corp | Oxygen sensor element |
| DE202004015400U1 (en) * | 2004-10-04 | 2004-12-16 | Aceos Gmbh | Oxygen sensor for e.g. medical equipment has electrically insulated base plate under first layer which is solid electrolyte and second layer with two electrodes |
| JP2006343297A (en) * | 2005-06-10 | 2006-12-21 | Ngk Spark Plug Co Ltd | Lamination-type gas sensor element and gas sensor |
| CN101718743A (en) * | 2009-11-30 | 2010-06-02 | 宁波大学 | Method for preparing mixed conductor dense diffusion barrier-type oxygen sensor |
| CN101936942A (en) * | 2010-08-25 | 2011-01-05 | 宁波大学 | Limiting current oxygen sensor |
| TW201213799A (en) * | 2010-09-29 | 2012-04-01 | Univ Nat Taipei Technology | Amperometric oxygen sensor |
| CN101995425A (en) * | 2010-10-30 | 2011-03-30 | 无锡隆盛科技有限公司 | Nitrogen oxide sensor chip for automobile |
| CN102954993A (en) * | 2011-08-29 | 2013-03-06 | 比亚迪股份有限公司 | Oxygen sensor and preparation method thereof |
| CN102636527A (en) * | 2012-04-23 | 2012-08-15 | 常州联德电子有限公司 | Inlaid plate-shaped oxygen sensor and preparation method thereof |
| CN104132986A (en) * | 2013-05-02 | 2014-11-05 | E+E电子有限责任公司 | Amperometric gas sensor |
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Effective date of registration: 20231128 Address after: 210044 floor 4, No. 6 Kefeng Road, Jiangbei new area, Nanjing, Jiangsu Applicant after: Jiangsu Hanya Medical Technology Co.,Ltd. Address before: No. 86-1, Shuanggao Road, Gaochun Economic Development Zone, Nanjing, Jiangsu 210000 Applicant before: NANJING HIGHERMED HEALTH SCIENCE & TECHNOLOGY CO.,LTD. |
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