46 results about "Electrodes platinum" patented technology

A method of direct oxide reduction includes forming a molten salt electrolyte in an electrochemical cell, disposing at least one metal oxide in the electrochemical cell, disposing a counter electrode comprising a material selected from the group consisting of osmium, ruthenium, rhodium, iridium, palladium, platinum, silver, gold, lithium iridate, lithium ruthenate, a lithium rhodate, a lithium tin oxygen compound, a lithium manganese compound, strontium ruthenium ternary compounds, calcium iridate, strontium iridate, calcium platinate, strontium platinate, magnesium ruthenate, magnesium iridate, sodium ruthenate, sodium iridate, potassium iridate, and potassium ruthenate in the electrochemical cell, and applying a current between the counter electrode and the at least one metal oxide to reduce the at least one metal oxide. Related methods of direct oxide reduction and related electrochemical cells are also disclosed.

The invention relates to a quantitative detection system for trace nitrophenol explosives. The system comprises a lifting beam (1), an indicating lamp (2), a heat dissipation window (3), an enclosure (4), a main case (5), a probe (6), an air pipe (7), a case seat (8), a probe protection rack (9), a replaceable probe (10), a PBS solution (11), a solution pool (12), a rack (13), an electrode retraction switch (14), an electrode seat (15), an Ag / AgCl electrode (16), a glassy carbon electrode (17) and a platinum electrode (18), wherein the quantitative detection system is provided with a liquid crystal display screen used for displaying the detection result. The quantitative detection system disclosed by the invention can be used for realizing quantitative detection of trace nitrophenol explosives in air and is automatic in data acquisition, convenient, safe and reliable, and due to intelligent management, the efficiency of the system is greatly improved.

The invention relates to the field of chemical slurry material, and specifically relates to oxygen sensor inner electrode platinum slurry, and a preparation method and an application thereof. The oxygen sensor inner electrode platinum slurry is composed of, by weight: 71-79% of platinum-coated zirconium powder, 14.7-16.7% of an organic solvent, and 6.3-8.3% of an organic adhesive. The preparation method comprises the steps that: the platinum-coated zirconium powder, the organic solvent, and the organic adhesive are added into a flask according to the ratio; and heating and stirring is carried out, such that cellulose is dissolved and the platinum-coated zirconium powder is uniformly mixed into a platinum slurry, wherein a heating temperature is 75-85 DEG C. The sensor manufactured by using the platinum slurry has stable electrical properties. Especially, a maximum voltage of the sensor can be 0.98V. Response speed is fast.

The invention relates to the field of dissolved oxygen content detection, in particular to a three-electrode electrochemical dissolved oxygen sensor. A cylindrical shell including a sensor, a replaceable oxygen-permeable membrane, a membrane cover, a gold electrode as a working electrode arranged in the cavity of the cylindrical shell, a silver electrode as an auxiliary electrode, a platinum electrode as a silver protective electrode, and the silver electrode The electrode, the gold electrode, and the platinum electrode are respectively connected to the polarization circuit through wires; the cavity of the cylindrical shell is filled with a liquid reaction electrolyte, and the electrolytic reaction solution includes the following components by weight: 74.55 parts by weight of potassium chloride , 0.561 parts by weight of potassium hydroxide and 1000 parts by weight of water. The electrochemical dissolved oxygen sensor of the present invention does not consume oxygen in the water sample during the measurement process, which improves the accuracy of detection. The auxiliary electrode adopts a double helix structure, which increases the contact area with the electrolyte and improves the response speed of the sensor. The sensor adopts The three-electrode system structure does not consume the electrolyte in the electrolyte and the silver of the auxiliary electrode, and the service life is greatly improved.