A kind of bifunctional electrode and its preparation and application
A dual-function, electrode technology, applied in battery electrodes, circuits, fuel cell-type half-cells and primary-cell-type half-cells, etc., can solve the problems of low electrode reaction efficiency, insufficient reduction, etc. Longevity, increased hydrophilicity, low precious metal loading effect
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[0025] A bifunctional magnesium seawater battery, comprising a hydrogen evolution and oxygen reduction bifunctional catalyst cathode, a magnesium alloy anode, and a battery case, see figure 2 schematic diagram. The cathode is based on nickel foam, the specification is 90PPI, and the surface density is 250g / m 2 , thickness 1.7mm, electroplating solution for electrodeposition reaction is 0.1mol / L nickel chloride and 2mol / L ammonium chloride, pH value is 3; electrodeposition current density is 100mA / cm 2 , electrodeposition capacity 60C / cm 2 , the electrodeposited metal is nickel, and the diameter of hemispherical particles in the coating of the obtained bifunctional electrode substrate is about 1um; the thickness of the oxidized hydroxide layer is about 10nm, and the catalyst Pt is loaded on the surface of the hemispherical coating with a loading capacity of 25ug / cm 2 , the particle diameter of noble metal Pt is 19nm. Such as figure 1 As shown in Figure a, it is a 1000-fold...
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