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2 results about "Cobalt phosphide" patented technology

Cobalt phosphate is the inorganic compound with the formula Co3(PO4)2. It is a commercial inorganic pigment known as cobalt violet.

Cobalt iron oxide-cobalt phosphate electrocatalytic oxygen evolution composite material, and preparation method and application thereof

ActiveCN111036247AShape is easy to controlImprove performanceMetal/metal-oxides/metal-hydroxide catalystsElectrodesAir atmosphereMaterial synthesis
The invention provides a cobalt iron oxide-cobalt phosphate electrocatalytic oxygen evolution composite material, and a preparation method and application thereof. The composite material is a composite material of a cobalt iron oxide nano-square block and a cobalt phosphate nano-array growing on foamed nickel in situ, the expression of the composite material is CoFeO-CoPi (NF), and the composite material belongs to the technical field of new energy nano-material synthesis. The cobalt phosphate nano-array growing on foamed nickel is taken as a template and a cobalt source, ferricyanide is introduced to form cobalt ferricyanide nano-square blocks on the cobalt phosphate nano-array, and the cobalt ferricyanide nano-square blocks on the cobalt phosphate nano-array are calcined at a high temperature in an air atmosphere to obtain the composite material of cobalt iron oxide and cobalt phosphate. The synthesis method simply and effectively compounds the cobalt phosphate and cobalt iron oxide,and enriches the compounding synthesis method of multi-metal oxide and oxysalt. The material shows excellent electro-catalytic oxygen evolution performance, has obvious morphology conversion after electro-catalytic oxygen evolution, and is suitable for the field of new energy development.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Preparation method of chromium-doped cobalt phosphide nanorod array growing on carbon cloth in situ

PendingCN112657521AHigh yieldEasy to operatePhysical/chemical process catalystsElectrodesChromium dopingFree energies
The invention aims to provide a preparation method of a chromium-doped cobalt phosphide nanorod array growing on carbon cloth in situ, which comprises the following specific steps of oxidizing the carbon cloth in nitric acid to enhance the hydrophilicity of the carbon cloth, and growing a layer of precursor CrxCo1-x(OH)F / CC on the carbon cloth in situ by a hydrothermal method, finally, converting the precursor growing on the carbon cloth into chromium-doped cobalt phosphide CrxCo1-x(OH)F / CC through a high-temperature gas-phase phosphating method. The preparation process is simple to operate, easy to control and low in cost and can be used for large-scale production, the chromium-doped cobalt phosphide nanorod array which grows on the carbon cloth in situ and is prepared by adopting the method is uniform in distribution and close in arrangement, the rod-like particle size reaches the nanoscale and is uniform in particle size, and the CoP crystal form is reserved while the free energy of hydrogen adsorption is reduced by chromium doping; the hydrogen evolution reaction can be efficiently, continuously and stably catalyzed.
Owner:BEIJING UNIV OF CHEM TECH
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