CN117214275A - YSZ-based solid electrolyte and MgSb 2 O 6 Planar hybrid potential sensor of electrode, preparation method and application thereof - Google Patents
YSZ-based solid electrolyte and MgSb 2 O 6 Planar hybrid potential sensor of electrode, preparation method and application thereof Download PDFInfo
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- 229910017640 MgSb Inorganic materials 0.000 title claims abstract description 41
- 239000007784 solid electrolyte Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 78
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims abstract description 64
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000000758 substrate Substances 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000007772 electrode material Substances 0.000 claims abstract description 16
- 230000035945 sensitivity Effects 0.000 claims abstract description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 47
- 238000003756 stirring Methods 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 229910052697 platinum Inorganic materials 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000005245 sintering Methods 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 206010058467 Lung neoplasm malignant Diseases 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 7
- 201000005202 lung cancer Diseases 0.000 abstract description 7
- 208000020816 lung neoplasm Diseases 0.000 abstract description 7
- 238000003980 solgel method Methods 0.000 abstract description 6
- 201000010099 disease Diseases 0.000 abstract description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 5
- 238000003745 diagnosis Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 45
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 33
- 230000000241 respiratory effect Effects 0.000 description 6
- 239000003550 marker Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 2
- 238000002790 cross-validation Methods 0.000 description 2
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- 241000935974 Paralichthys dentatus Species 0.000 description 1
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- 239000012456 homogeneous solution Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 208000017169 kidney disease Diseases 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
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- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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Abstract
YSZ-based solid electrolyte and MgSb 2 O 6 A planar mixed potential type sensor of an electrode, a preparation method and application thereof belong to the technical field of gas sensors. The sensor consists of a heating plate, a YSZ substrate, a Pt reference electrode and MgSb 2 O 6 A sensitive electrode; the reference electrode and the sensitive electrode are respectively prepared on two sides of the upper surface of the YSZ substrate, the lower surface of the YSZ substrate is adhered with the heating plate, and the MgSb is successfully prepared by the sol-gel method as the sensitive electrode 2 O 6 Sensitive electrode material. The sensor has higher sensitivity to isoprene, acetone and n-propanol gas, and can be used for realizing temperature regulation by combining a computer support vector machine-radial basis function (SVM-RBF) model and the sensorThe identification and classification of the present gas components (one, two or three of isoprene, n-propanol and acetone) can be further applied to early detection and diagnosis of lung cancer and other related diseases.
Description
Technical Field
The invention belongs to the technical field of gas sensors, and particularly relates to a YSZ-based solid electrolyte and MgSb 2 O 6 A planar mixed potential type sensor of a sensitive electrode, a preparation method and application thereof in gas identification and classification.
Background
Lung cancer is a highly cryptic, early difficult to find and diagnose disease, and its potential respiratory markers include n-propanol, isoprene and acetone gases. At the same time, however, acetone gas can be used as a respiratory marker for diabetes and isoprene gas can be used as a respiratory marker for kidney disease. Therefore, in order to improve the accuracy of lung cancer detection, the respiratory marker detection should not be single, the detection of the multi-component respiratory marker should be realized, and the more the respiratory marker types are contained, the greater the probability that the lung cancer may be caused.
The mixed potential type gas sensor based on Yttria Stabilized Zirconia (YSZ) solid electrolyte has the advantages of high response recovery speed, high response value, good stability, sensitivity to volatile organic compounds and the like. The specific sensing performance of the device is obviously influenced by the sensitive electrode material, so that the development of a novel sensitive electrode material to prepare a high-performance gas sensor is one of more efficient methods.
Disclosure of Invention
The invention aims to provide a YSZ-based solid electrolyte and MgSb for gas classification 2 O 6 A mixed potential type sensor of sensitive electrode, a preparation method and application thereof in gas identification and classification. The sensor prepared according to the invention is prepared in commercial YSZ (8% mol doped Y) 2 O 3 -ZrO 2 ) Solid electrolyte as ion conducting layer and MgSb prepared by sol-gel method 2 O 6 The material is used as a sensitive electrode, and the prepared sensor has higher response value to isoprene, n-propanol and acetone gases. Combining a computer support vector machine-radial basis function (SVM-RBF) model with sensor temperature adjustment, the sensor can realize one, two or three of gas components (isoprene, n-propanol and acetone)The combination of (2) and can be further applied to early detection and diagnosis of related diseases such as lung cancer and the like.
The invention relates to a solid electrolyte based on YSZ and MgSb 2 O 6 A planar hybrid potential sensor of a sensitive electrode is composed of a heating plate, a YSZ substrate, a Pt reference electrode and MgSb as shown in FIG. 1 2 O 6 A sensitive electrode; pt reference electrode and MgSb 2 O 6 The sensitive electrodes are respectively prepared on two sides of the upper surface of the YSZ substrate, and the heating plates are bonded with the lower surface of the YSZ substrate through inorganic adhesive, so that the working temperature of the device is ensured; wherein MgSb 2 O 6 The sensitive electrode material is prepared by a sol-gel method and comprises the following steps:
(1) MgSO 4 And SbCl 3 Respectively dissolving the powder in 15-25 mL and 35-45 mL of ethanol, and stirring to obtain a uniform solution with the concentration of 0.05-0.15 mol/L;
(2) The two solutions obtained in the step (1) are processed according to MgSb 2 O 6 The materials are mixed according to the stoichiometric ratio and magnetically stirred and reacted for 1.5 to 2.5 hours at the temperature of 70 to 90 ℃; adding 5-15 mL of polyethylene glycol in the stirring reaction process; after the stirring reaction is completed, ammonia water is used for regulating the pH value to 9-11;
(3) Continuously magnetically stirring the solution obtained in the step (2) at 70-90 ℃ for reaction for 5-7 hours, drying the obtained gel at 70-90 ℃ for 13-15 hours, and calcining the dried gel at 700-900 ℃ for 4-6 hours to obtain MgSb 2 O 6 Sensitive electrode material.
Next, the YSZ-based solid electrolyte and MgSb of the invention 2 O 6 The preparation method of the planar mixed potential type sensor of the sensitive electrode comprises the following steps:
(1) Preparation of Pt reference electrode: manufacturing a strip Pt reference electrode with the thickness of 15-20 mu m on one side of the upper surface of the YSZ substrate, and dipping a round platinum point on the other side of the upper surface of the YSZ substrate; folding 1-2 cm long Pt wire into V shape, and sticking the V shape Pt wire to the center of the Pt reference electrode and the round platinum point;
(2) Baking the YSZ substrate obtained in the step (1) under an infrared lamp for 30-60 min, heating the YSZ substrate to 900-1100 ℃ at a heating rate of 4-6 ℃/min, sintering for 55-65 min, and naturally cooling to room temperature to enable Pt wires to be tightly adhered to the YSZ substrate;
(3) Preparation of MgSb 2 O 6 Sensitive electrode: mgSb is carried out 2 O 6 Adding the sensitive electrode material into deionized water to prepare slurry with mass concentration of 2-20%, and adding MgSb 2 O 6 Coating the slurry on the round platinum points prepared in the step (1) to obtain strip MgSb with the thickness of 20-30 mu m 2 O 6 A sensitive electrode; heating the YSZ substrate to 700-900 ℃ at a heating rate of 1-2 ℃/min, and sintering for 1-3 h;
(4) Preparation of an inorganic adhesive: 2-4 mL of water glass and 0.7-1.0 g of Al 2 O 3 Mixing the powder together, and uniformly stirring to obtain an inorganic adhesive;
(5) Al with Pt heating electrode 2 O 3 The ceramic plate is used as a heating plate to be bonded with the lower surface of the YSZ substrate obtained in the step (3) by using an inorganic adhesive, the Pt heating electrode is contacted with the lower surface of the YSZ substrate, and the YSZ solid electrolyte and MgSb based material are obtained after welding and packaging 2 O 6 A planar hybrid potential sensor of a sensitive electrode.
The invention has the advantages that:
(1) The sol-gel method has the advantages of high repeatability, high efficiency, lower cost, high success rate and the like, thereby efficiently preparing MgSb 2 O 6 A sensitive electrode material;
(2) The solid electrolyte utilized by the device was YSZ (8% mol doped Y 2 O 3 -ZrO 2 ) The solid electrolyte material has the advantages of high temperature resistance, strong mechanical stability and good ion conductivity;
(3) The prepared YSZ-based solid electrolyte and MgSb 2 O 6 The plane mixed potential type sensor of the sensitive electrode has higher sensitivity and response value to n-propanol, acetone and isoprene gas, combines a computer support vector machine-radial basis function (SVM-RBF) model and sensor temperature regulation, and respectively and gradually adjusts the working temperature of the sensor to 500 ℃, 550 ℃ and 600℃ respectivelyResponse values were tested for single gases (isoprene, n-propanol, acetone), binary mixed gases (isoprene+n-propanol, isoprene+acetone, n-propanol+acetone) and ternary mixed gases (isoprene+n-propanol+acetone). Finally, the ratio of response values at different temperatures is used as an input characteristic value of a computer model, a model training set is established, and 10 times of cross validation is utilized, so that the final computer outputs classification results of corresponding single gas, binary mixed gas and ternary mixed gas, and the method can be used for identifying and classifying gases (one, two or three of isoprene, n-propanol and acetone) and further is applied to early detection and diagnosis of lung cancer and other related diseases.
Drawings
Fig. 1: the invention relates to a solid electrolyte based on YSZ and MgSb 2 O 6 Schematic structure of planar mixed potential type gas sensor of sensitive electrode.
Name of each part: pt reference electrode 1, YSZ substrate 2, mgSb 2 O 6 A sensitive electrode 3 and a heating plate 4.
Fig. 2: mgSb in the present invention 2 O 6 XRD pattern of the sensitive material (angle on abscissa and intensity on ordinate).
As shown in FIG. 2, it is shown that MgSb 2 O 6 The XRD pattern of the sensitive electrode material is consistent with that of a standard card JCPDS#37-1470, which proves that the sensitive electrode material prepared by the invention is MgSb with high purity 2 O 6 A material.
Fig. 3: mgSb prepared by sol-gel method in the invention 2 O 6 A plan SEM image of the sensitive electrode material.
As shown in fig. 3, it can be seen that the sensitive material particles are irregular micro-nano-sized particles.
Fig. 4: using YSZ substrates and MgSb 2 O 6 The response recovery curves (figures a, b and c) and the response value-gas concentration logarithmic relationship curves (figure d, e, f, g, h, i) of the planar mixed potential type sensor manufactured by the sensitive electrode material on isoprene, n-propanol and acetone at 500 ℃, 550 ℃ and 600 ℃ respectively.
As shown in fig. 4, it can be seen that the sensor response value has a good linear relationship with the logarithm of the gas concentration at three operating temperatures.
Fig. 5: when the ratio between response values of different temperatures measured by the sensor is used as the characteristic value of the SVM-RBF model, the output classification confusion matrix result of the model.
As shown in FIG. 5, the result shows that the SVM-RBF model can accurately identify single isoprene and acetone gases, binary mixed gas types (isoprene+n-propanol, isoprene+acetone, n-propanol+acetone) and ternary mixed gas types (isoprene+n-propanol+acetone); for a single n-propanol gas, the computer model identified that there were errors, 88% of the data identified as n-propanol, and the remaining 12% of the data identified as acetone + n-propanol.
Detailed Description
Successfully preparing MgSb by sol-gel method 2 O 6 The sensitive electrode material is used for preparing a sensitive electrode, preparing a YSZ-based mixed potential type gas sensor, and testing the specific sensing performance, and the process is as follows:
1. manufacturing a Pt reference electrode: a strip of Pt reference electrode (0.5 mm 2mm in size, 20 μm thick) was prepared on the top surface of a commercial YSZ substrate by dipping in Pt slurry on one side. And dipping Pt slurry on the other side of the upper surface of the YSZ substrate to brush a round platinum point, and respectively doubling two 1cm platinum wires into a V shape from the middle to be adhered to the center positions of the Pt reference electrode and the round platinum point. The YSZ substrate was then baked under an infrared lamp for 45min and then sintered at 1000℃for 1h at a heating rate of 5℃per minute. Finally naturally cooling to room temperature to enable the platinum wire to be tightly combined with the YSZ substrate;
2. preparation of MgSb 2 O 6 Sensitive electrode:
MgSO 4 And SbCl 3 The powders were dissolved in 20mL and 40mL ethanol, respectively, and stirred to form a homogeneous solution of 0.1mol/L each. Then mixing the two solutions in the same beaker, and stirring for 2 hours under the magnetic stirring condition at 80 ℃; during stirring, 10mL of polyethylene glycol (PEG) was added to the above solution. After stirring, ammonia (NH) 4 OH) adjusting the pH of the solution to equal 10. Then at 80 DEG CThe solution was magnetically stirred for 6 hours and the resulting gel was placed in an oven at 80 ℃ for 14 hours. Finally, transferring the dried gel into a sintering furnace, and calcining at 800 ℃ for 5 hours, thereby synthesizing MgSb 2 O 6 Sensitive electrode material.
Then taking a small amount of MgSb obtained after sintering at 800 DEG C 2 O 6 Mixing the powder with deionized water to obtain slurry with mass concentration of 10%, and mixing the MgSb 2 O 6 Coating the slurry on a round platinum point to manufacture a sensitive electrode layer with the size of 0.5mm multiplied by 2mm and the thickness of 25 mu m; then sintering for 2 hours at 800 ℃ in a high-temperature sintering furnace, and heating at a speed of 2 ℃/min in the sintering process so that the sensitive electrode layer and the YSZ solid electrolyte layer are tightly combined together;
3. bonding Al with Pt heating electrode 2 O 3 Ceramic plate: 3mL of water glass was combined with 0.8g of Al 2 O 3 The powder is evenly stirred and mixed to prepare the inorganic adhesive. Al with Pt heating electrode of 2mm by 2mm size and 0.2mm thickness was applied with adhesive 2 O 3 The ceramic plate is adhered to the lower surface of the YSZ substrate;
4. welding and packaging the device: welding the device obtained in the step 3, and sleeving a protective cover to obtain the YSZ-based solid electrolyte and MgSb 2 O 6 The potential difference between the sensor sensitive electrode and the reference electrode is used as a voltage value by using a FLUKE 8846A ammeter, and data are recorded by a computer.
The sensor was then tested one by one at 500 ℃, 550 ℃ and 600 ℃ for a single gas component (isoprene, n-propanol, acetone in the concentration range of 0.5ppm to 20 ppm), a binary mixed gas component (5 ppm+5ppm, 10ppm+5ppm, 20ppm+5ppm, 5ppm+10ppm, 10ppm+10ppm, 20ppm+10ppm isoprene+n-propanol, 5ppm+5ppm, 10ppm+5ppm, 20ppm+5ppm, 5ppm+10ppm, 10ppm+10ppm, 20ppm+10ppm isoprene+acetone, 5ppm+5ppm, 20ppm+5ppm, 5ppm+10ppm, 10ppm+10ppm, 20ppm+10ppm acetone+n-propanol), and a ternary mixed gas component (5 ppm+5ppm, 5ppm+5ppm+10ppm, 5ppm+10ppm, 10ppm+5ppm, 5 ppm+10+5 ppm, 10 ppm+10+5 ppm+5+5 ppm, 10ppmResponse values at different concentrations or different concentrations and different volume ratios of ppm, 10ppm+5ppm+10ppm acetone+n-propanol+isoprene (response values at different temperatures are denoted as DeltaV) 500℃ 、ΔV 550℃ 、ΔV 600℃ The response value is defined as the difference between the voltage value between two electrodes in the gas to be measured with different concentrations at the same temperature and the voltage value between two electrodes in the air; the response values of various gas components are repeatedly tested for three times at three temperatures, so that accidental errors are reduced; then the DeltaV of each gas component is calculated 500℃ /ΔV 550℃ And V 550℃ /ΔV 600℃ As input characteristic values of a python language programming SVM-RBF (support vector machine-radial basis function) model, data sets corresponding to single gas, binary mixed gas and ternary mixed gas are divided into training and testing subsets, respectively, and comprise 70% and 30% of data, and ten times of cross validation is combined, so that a computer outputs seven point group areas with boundaries, respectively corresponding to seven different gas components, namely three single gas components (isoprene, n-propanol and acetone), three binary mixed gas components (isoprene+n-propanol, isoprene+acetone and n-propanol+acetone) and one ternary mixed gas component (isoprene+n-propanol+acetone).
In practice, for unknown gas components (one, two or three of isoprene, n-propanol and acetone), the response values at 500 deg.C, 550 deg.C and 600 deg.C are measured, respectively, and then DeltaV is calculated 500℃ /ΔV 550℃ And V 550℃ /ΔV 600℃ And comparing and judging the calculation result with seven point group areas with boundaries output by the computer, thereby realizing the identification and classification of the gas components and further being applicable to early detection and diagnosis of related diseases such as lung cancer and the like.
In the above experimental operation, further increasing the data amount of the test response value (gas concentration, volume ratio between gases, etc.) can increase the accuracy of gas component identification.
Claims (4)
1. YSZ-based solid electrolyte and MgSb 2 O 6 The plane mixed potential type sensor of the sensitive electrode consists of a heating plate, a YSZ substrate, a Pt reference electrode and the sensitive electrode; the Pt reference electrode and the sensitive electrode are respectively prepared on two sides of the upper surface of the YSZ substrate, and the heating plate is bonded with the lower surface of the YSZ substrate through an inorganic adhesive, and the method is characterized in that: the sensitive electrode material is MgSb 2 O 6 The preparation method comprises the following steps of,
(1) MgSO 4 And SbCl 3 Respectively dissolving the powder in 15-25 mL and 35-45 mL of ethanol, and stirring to obtain a uniform solution with the concentration of 0.05-0.15 mol/L;
(2) The two solutions obtained in the step (1) are processed according to MgSb 2 O 6 The materials are mixed according to the stoichiometric ratio and magnetically stirred and reacted for 1.5 to 2.5 hours at the temperature of 70 to 90 ℃; adding 5-15 mL of polyethylene glycol in the stirring reaction process; after the stirring reaction is completed, ammonia water is used for regulating the pH value to 9-11;
(3) Continuously magnetically stirring the solution obtained in the step (2) at 70-90 ℃ for reaction for 5-7 hours, drying the obtained gel at 70-90 ℃ for 13-15 hours, and calcining the dried gel at 700-900 ℃ for 4-6 hours to obtain MgSb 2 O 6 Sensitive electrode material.
2. A YSZ-based solid electrolyte and MgSb as claimed in claim 1 2 O 6 The preparation method of the planar mixed potential type sensor of the sensitive electrode comprises the following steps:
(1) Preparation of Pt reference electrode: manufacturing a strip Pt reference electrode with the thickness of 15-20 mu m on one side of the upper surface of the YSZ substrate, and dipping a round platinum point on the other side of the upper surface of the YSZ substrate; folding 1-2 cm long Pt wire into V shape, and sticking the V shape Pt wire to the center of the Pt reference electrode and the round platinum point;
(2) Baking the YSZ substrate obtained in the step (1) under an infrared lamp for 30-60 min, heating the YSZ substrate to 900-1100 ℃ at a heating rate of 4-6 ℃/min, sintering for 55-65 min, and naturally cooling to room temperature to enable Pt wires to be tightly adhered to the YSZ substrate;
(3) Preparation of MgSb 2 O 6 Sensitive electrode: mgSb is carried out 2 O 6 Sensitivity toThe electrode material is added into deionized water to prepare slurry with the mass concentration of 2-20%, mgSb is added into the slurry 2 O 6 Coating the slurry on the round platinum points prepared in the step (1) to obtain strip MgSb with the thickness of 20-30 mu m 2 O 6 A sensitive electrode; heating the YSZ substrate to 700-900 ℃ at a heating rate of 1-2 ℃/min, and sintering for 1-3 h;
(4) Preparation of an inorganic adhesive: 2-4 mL of water glass and 0.7-1.0 g of Al 2 O 3 Mixing the powder together, and uniformly stirring to obtain an inorganic adhesive;
(5) Al with Pt heating electrode 2 O 3 The ceramic plate is used as a heating plate to be bonded with the lower surface of the YSZ substrate obtained in the step (3) by using an inorganic adhesive, the Pt heating electrode is contacted with the lower surface of the YSZ substrate, and the YSZ solid electrolyte and MgSb based material are obtained after welding and packaging 2 O 6 A planar hybrid potential sensor of a sensitive electrode.
3. A YSZ-based solid electrolyte and MgSb as claimed in claim 1 2 O 6 The application of the planar hybrid potential type sensor of the sensitive electrode in gas identification and classification is characterized in that: the gas is one, two or three of isoprene, n-propanol and acetone.
4. A YSZ-based solid electrolyte as claimed in claim 3 and MgSb 2 O 6 The application of the planar hybrid potential type sensor of the sensitive electrode in gas identification and classification is characterized in that: the response values of the sensor are respectively marked as DeltaV when the sensor is used for different concentrations or different concentrations and different volume ratios of single gas component, binary mixed gas component and ternary mixed gas component at 500 ℃, 550 ℃ and 600 ℃ one by one 500℃ 、ΔV 550℃ 、ΔV 600℃ After which the DeltaV of each gas component is determined 500℃ /ΔV 550℃ And V 550℃ /ΔV 600℃ As the input characteristic value of the python language writing SVM-RBF model, the computer outputs seven point group areas with limits, corresponding to seven different kinds of areasThe gas components of (1) are three single gas components of isoprene, n-propanol and acetone respectively, three binary mixed gas components of isoprene+n-propanol, isoprene+acetone, n-propanol+acetone and one ternary mixed gas component of isoprene+n-propanol+acetone; in practical application, for unknown gas components, the response values at 500 ℃, 550 ℃ and 600 ℃ are measured respectively, and then DeltaV is calculated 500℃ /ΔV 550℃ And V 550℃ /ΔV 600℃ And comparing and judging the calculation result with the seven point group areas with the limits output by the computer, thereby realizing the identification and classification of the gas components.
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