摘要:
The present specification provides a NOx responsive element suitable for directly sensing NOx. The NOx responsive element an oxygen ion conductive layer has a first electrode layer having a nitrogen oxide decomposition catalyst phase composed of perovskite-type oxide, being in contact with the oxygen ion conductive layer, and being exposed to NOx, and a second electrode layer opposing the first electrode layer across the oxygen ion conductive layer. The nitrogen oxide decomposition catalyst phase has a nitrogen oxide adsorption stabilizing surface on its surface exposed to nitrogen oxide.
摘要:
A controller (3) of an air-fuel-ratio sensor (100) according to an embodiment includes a current supplying unit (13), a sweep processing unit (16), and an abnormality detecting unit (20). The current supplying unit (13) supplies a current (Ip) to the pump cell (4) through a first terminal (Tip) connected with the pump cell (4) so as to control the pump cell (4). The sweep processing unit (16) executes a sweeping process in which a predetermined voltage (Vm) or a predetermined current (Im) is applied to the detection cell (5) through a second terminal (Tvs) connected with the detection cell (5) so as to change a voltage (Vs) and a current (Is) of the detection cell (5). The abnormality detecting unit (20) detects a shortcircuited state between the first terminal (Tip) and the second terminal (Tvs) on the basis of a fluctuation in a voltage (Vp) or a current (Ip), generated by the sweeping process, of the first terminal (Tip).
摘要:
A membrane electrode assembly (10) of an electrochemical device includes a proton conductive solid electrolyte membrane (12) and an electrode (11) including Ni and an electrolyte material which contains as a primary component, at least one of a first compound having a composition represented by BaZr 1-x1 M 1 x1 O 3 (M 1 represents at least one element selected from trivalent elements each having an ion radius of more than 0.720 A° to less than 0.880 A°, and 0 1 1-x2 Tm x2 O 3 (0 2
摘要:
A gas sensor includes a housing (22) having disposed therein a membrane electrode assembly comprising a sensing electrode (14), a counter electrode (16), and a solid polymer electrolyte (12) disposed between the sensing electrode and the counter electrode. The sensing electrode comprises a first catalyst comprising noble metal nanoparticles (34). The counter electrode comprises a second catalyst comprising noble metal nanoparticles (34), which can be of the same composition or a different composition as the first catalyst. The sensor housing also includes an opening (24) in fluid communication with the sensing electrode for test gas to contact the sensing electrode. The sensor also includes an electrical circuit (19) connecting the sensing electrode and the counter electrode.
摘要:
A device for signal processing. The device includes a signal generator, a signal detector, and a processor. The signal generator generates an original waveform. The signal detector detects an affected waveform. The processor is coupled to the signal detector. The processor receives the affected waveform from the signal detector. The processor also compares at least one portion of the affected waveform with the original waveform. The processor also determines a difference between the affected waveform and the original waveform. The processor also determines a value corresponding to a unique portion of the determined difference between the original and affected waveforms. The processor also outputs the determined value.
摘要:
The present invention relates to a gas sensor electrode including a conductive particle phase made of Pt or Pt alloy and a ceramic particle phase being mixed and dispersed, wherein a rate of content of the ceramic particle phase is 6.0 to 22.0 mass%, and a void ratio is 2.5 to 10.0%, and a dispersion degree of the conductive particle phase per length of 25 µm on the electrode surface is 0.60 to 0.85 µm, and a dispersion degree of the conductive particle phase in the electrode cross section per length of 100 µm in a direction parallel to the electrode surface is 2.0 to 4.0 µm. This electrode can be produced by firing a metal paste made by dispersing, in a solvent, a conductive particle having a core/shell structure in which a core particle such as Pt is covered with a ceramic shell and ceramic powder. The gas sensor electrode according to the present invention has a high electrode activity.
摘要:
The present invention is an electroconductive particle for forming an electrode including a precious metal particle including Pt or a Pt alloy and having an average particle diameter of 50 to 150 nm, a first ceramic particle including Al 2 O 3 or ZrO 2 dispersed in the precious metal particle and having an average particle diameter of 5 to 50 nm, and a second ceramic particle including Al 2 O 3 or ZrO 2 bonded to an outer periphery of the precious metal particle and having an average particle diameter of 5 to 50 nm. The sum of the volume of the first ceramic particle and the volume of the second ceramic particle is preferably 2 to 40 vol% based on the whole electroconductive particle. A metal paste containing the electroconductive particle according to the invention is one from which an electrode film of low resistance and excellent durability can be manufactured and further excellent in adherence and conformability to a substrate.
摘要:
The present invention relates to a gas sensor electrode including a conductive particle phase made of Pt or Pt alloy and a ceramic particle phase being mixed and dispersed, wherein a rate of content of the ceramic particle phase is 6.0 to 22.0 mass%, and a void ratio is 2.5 to 10.0%, and a dispersion degree of the conductive particle phase per length of 25 µm on the electrode surface is 0.60 to 0.85 µm, and a dispersion degree of the conductive particle phase in the electrode cross section per length of 100 µm in a direction parallel to the electrode surface is 2.0 to 4.0 µm. This electrode can be produced by firing a metal paste made by dispersing, in a solvent, a conductive particle having a core/shell structure in which a core particle such as Pt is covered with a ceramic shell and ceramic powder. The gas sensor electrode according to the present invention has a high electrode activity.