A preparation method of a dual-battery chip wide-area oxygen sensor
An oxygen sensor and dual-battery technology, which is applied in the field of dual-battery chip wide-area oxygen sensor and its preparation, can solve the problems of air pollution by exhaust gas, changes in air concentration, influence on measurement accuracy, etc. The effect of thin, simplified preparation process
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Embodiment 1
[0038] combined with figure 1 and figure 2 As shown, a double-battery chip wide-area oxygen sensor is sintered by stacking oxygen pumping battery 1, reference battery 2, structural layer 3 and heating layer 4 sequentially from top to bottom, wherein:
[0039] Oxygen pumping battery 1: a pump comprising a first zirconia casting substrate 16, an oxygen pumping external electrode 12 symmetrically arranged on the upper surface of the first zirconia casting substrate and a pump on the lower surface of the first zirconia casting substrate 16 An oxygen inner electrode 17, the oxygen pumping outer electrode 12 is covered with a porous protective layer 11, and the oxygen pumping outer electrode 12 is connected to the pin 13;
[0040]Reference cell 2: comprising a second zirconia cast substrate 22, a test electrode 21 and a reference electrode 24 arranged on the upper surface of the second zirconia cast substrate 22, the second zirconia cast substrate The lower surface of the sheet 2...
Embodiment 2
[0045] A method for preparing a dual-cell type chip wide-area oxygen sensor, comprising:
[0046] Step S1: Take 5mol% yttrium oxide doped zirconia, and configure inorganic components with alumina according to the mass percentage of 88:12, and add dispersant, organic Solvent, binder and plasticizer are ball milled to form zirconia ceramic slurry;
[0047] A zirconia casting substrate is prepared by a casting method, and a first zirconia casting substrate, a second zirconia casting substrate, a third zirconia casting substrate and a fourth zirconia casting substrate are obtained;
[0048] Use mechanical punching to punch positioning holes, electrode lead-out holes and heater lead-out holes;
[0049] Step S2: prepare oxygen pump electrode slurry, diffusion barrier slurry and porous protective layer slurry: mix platinum powder and carbon at a mass percentage of 88:12, and then add an organic solvent to prepare pump electrode slurry; mix zirconia, carbon Mixing at a mass percenta...
Embodiment 3
[0056] Step S1: Take 8mol% yttrium oxide doped zirconia, and configure inorganic components with alumina according to the mass percentage of 75:25, and add dispersant, organic Solvent, binder and plasticizer are ball milled to form zirconia ceramic slurry;
[0057] A zirconia casting substrate is prepared by a casting method, and a first zirconia casting substrate, a second zirconia casting substrate, a third zirconia casting substrate and a fourth zirconia casting substrate are obtained;
[0058] Use mechanical punching to punch positioning holes, electrode lead-out holes and heater lead-out holes;
[0059] Step S2: Prepare oxygen pump electrode slurry, diffusion barrier slurry and porous protective layer slurry: mix platinum powder and carbon at a mass percentage of 95:5, and then add an organic solvent to prepare pump electrode slurry; mix zirconia, carbon Mix at 50:50 by mass percentage, and then add an organic solvent to prepare a diffusion barrier slurry; mix zirconia a...
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