Method for preparing nanometer flake cobalt phosphide through vapor deposition

A nano-sheet, vapor deposition technology, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems of increasing yield, high reaction temperature, long ion diffusion distance, etc., to achieve easy operation and low reaction temperature. , the effect of stable morphology and structure

Inactive Publication Date: 2020-06-23
XUYI XINYUAN OPTICAL SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The appealed patents all have shortcomings such as high reaction temperature, and in electrochemical applications, the morphology of the product cobalt phosphide is not conducive to the electrolyte entering the interior of the electrode material, and the ion diffusion distance is too long, which is not conducive to saving production capacity and increasing production capacity in practical applications. Yield purpose

Method used

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  • Method for preparing nanometer flake cobalt phosphide through vapor deposition

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Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing nano-sheet cobalt phosphide by vapor deposition, comprising the following steps:

[0023] Step (1). Weighing the cobalt source and 2-methylimidazole according to a molar ratio of 1:8, and matching the cobalt source and the solvent with 1 mole of cobalt corresponding to 20 milliliters of solvent to form a solution A;

[0024] The weighed 2-methylimidazole is dissolved in the same volume of solvent to form solution B;

[0025] Pour B into A, stir to form a homogeneous solution, and let it stand at room temperature for 12-24 hours; the cobalt source is cobalt chloride; the solvent is deionized water.

[0026] Step (2). After centrifugal cleaning, vacuum drying for no less than 12 hours, the precursor is obtained; the sheet-like precursor nano-array is prepared by liquid phase deposition at room temperature, and its structure is stable and orderly, which is beneficial to Subsequent synthetic processing.

[0027] Step (3). The above-mentioned precurs...

Embodiment 2

[0030] A method for preparing nano-sheet cobalt phosphide by vapor deposition, comprising the following steps:

[0031] Step (1). Weighing the cobalt source and 2-methylimidazole according to a molar ratio of 1:8, and matching the cobalt source and the solvent with 1 mole of cobalt corresponding to 20 milliliters of solvent to form a solution A;

[0032] The weighed 2-methylimidazole is dissolved in the same volume of solvent to form solution B;

[0033] Pour B into A, stir to form a homogeneous solution, and let it stand at room temperature for 12-24h; the cobalt source is cobalt acetate; the solvent is methanol.

[0034] Step (2). After centrifugal cleaning, vacuum drying for no less than 12 hours, the precursor is obtained; the sheet-like precursor nano-array is prepared by liquid phase deposition at room temperature, and its structure is stable and orderly, which is beneficial to Subsequent synthetic processing.

[0035] Step (3). The above-mentioned precursor and the ph...

Embodiment 3

[0038] A method for preparing nano-sheet cobalt phosphide by vapor deposition, comprising the following steps:

[0039] Step (1). Weighing the cobalt source and 2-methylimidazole according to a molar ratio of 1:8, and matching the cobalt source and the solvent with 1 mole of cobalt corresponding to 20 milliliters of solvent to form a solution A;

[0040] The weighed 2-methylimidazole is dissolved in the same volume of solvent to form solution B;

[0041] Pour B into A, stir to form a homogeneous solution, and let it stand at room temperature for 12-24h; the cobalt source is cobalt nitrate; the solvent is deionized water.

[0042] Step (2). After centrifugal cleaning, vacuum drying for no less than 12 hours, the precursor is obtained; the sheet-like precursor nano-array is prepared by liquid phase deposition at room temperature, and its structure is stable and orderly, which is beneficial to Subsequent synthetic processing.

[0043] Step (3). The above-mentioned precursor and...

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Abstract

The invention provides a method for preparing nanometer flake cobalt phosphide through vapor deposition. The method includes the following steps of firstly, weighing a cobalt source and 2-methylimidazole according to the molar ratio of 1:8, matching the cobalt source and a solvent according to the ratio of 1 mole of cobalt to 20 milliliters of solvent to form a solution A, dissolving the weighed 2-methylimidazole in the same volume of solvent to form a solution B, pouring the solution B into the solution A, and performing standing at a room temperature for 12-24 hours; secondly, performing vacuum drying for 12 hours or longer after centrifugal cleaning to obtain a precursor; thirdly, weighing the precursor and a phosphorus source according to the molar ratio of 1:5, putting the precursor and the phosphorus source together into a tube furnace where protection gas is introduced; and fourthly, performing a heating process on the tube furnace under the atmosphere protection conditions according to a heating curve, performing reacting for 2-5 hours at 300-500 DEG C, and cooling to a room temperature to obtain the nanometer flake cobalt phosphide. The method is stable in structure, orderly in arraying and beneficial for subsequent synthesis machining, and the raw material is nitrate or chlorate or acetate of cobalt and is low in price.

Description

technical field [0001] The invention relates to the technical field of preparation of nano-flaky cobalt phosphide, in particular to a method for preparing nano-flaky cobalt phosphide by vapor deposition. Background technique [0002] Cobalt phosphide has good metallic properties and good conductivity, and has been widely studied in many fields, such as as an electrocatalyst for water splitting, as an anode material for lithium-ion batteries, as a catalyst for hydrodesulfurization reactions Wait. At present, the morphology of cobalt phosphide synthesized in China is mostly nanospheres, nanowires and nanospheres. For example, Chinese patent CN201910027895.0 discloses a nitrogen-doped cobalt phosphide / nano-carbon composite material and its preparation method and application, which is characterized in that the phosphorus source, cobalt source, and monomers for synthesizing gel are mixed with polymerization aids Polymerization to obtain double network hydrogel; double network h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/12C23C14/24C23C14/06C25B11/06C25B1/04C01G51/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G51/00C23C14/0021C23C14/06C23C14/24C23C18/1204C25B1/04C25B11/075Y02E60/36
Inventor 陈道理杨绪勇委福祥
Owner XUYI XINYUAN OPTICAL SCI TECH CO LTD
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