Preparation method of activated carbon-supported cobalt-nickel alloy material and electrochemical application of preparation method

A cobalt-nickel alloy and activated carbon technology, applied in electrodes, electrolysis processes, electrolysis components, etc., can solve the problems of scarce reserves of platinum group metal materials, high prices, restricting large-scale production and application, etc., to improve hydrogen production efficiency and low cost. , the preparation method is simple

Active Publication Date: 2017-10-27
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] In the existing technology, platinum group metals are the most effective catalysts for hydrogen production by electrolysis of water, but the reserves of platinum group metal materials are scarce and expensive, which seriously restricts their large-scale production and application. Therefore, it is necessary to develop an environmentally friendly, low-cost, Efficient and stable catalysts for hydrogen production by electrolysis of water are imperative

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  • Preparation method of activated carbon-supported cobalt-nickel alloy material and electrochemical application of preparation method
  • Preparation method of activated carbon-supported cobalt-nickel alloy material and electrochemical application of preparation method
  • Preparation method of activated carbon-supported cobalt-nickel alloy material and electrochemical application of preparation method

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preparation example Construction

[0027] A kind of activated carbon supported cobalt-nickel alloy material, its preparation method comprises the steps:

[0028] Step A. According to the molar ratio of cobalt source: nickel source = 1:0.1-10, both the cobalt source and the nickel source are dissolved in distilled water to obtain a clarified mixed solution. Wherein, the cobalt source is preferably at least one of cobalt chloride, cobalt nitrate or cobalt sulfate; the nickel source is preferably at least one of nickel chloride, nickel nitrate or nickel sulfate.

[0029] Step B, adding activated carbon to the clarified mixed solution prepared in step A, forming a slurry after the adsorption is saturated, and then heat-treating the slurry to obtain a cobalt-nickel alloy material supported by activated carbon. Wherein, the mass ratio of the consumption of activated carbon in step B to the consumption of distilled water in step A is preferably 1:0.8~8. The heat treatment of the slurry is to prepare the activated car...

Embodiment 1

[0038] A kind of activated carbon supported cobalt-nickel alloy material, its preparation method comprises the steps:

[0039] Step a1. Both 91 mg of nickel nitrate and 545 mg of cobalt nitrate were dissolved in 0.5 ml of distilled water to obtain a clear mixed solution.

[0040]Step b1, add 0.5 g of activated carbon powder to the clarified mixed liquid prepared in step a1, and ultrasonically oscillate to form a slurry after the adsorption is saturated, and then place the slurry in an environment of 100°C under nitrogen protection for 6 hours , and then maintained in an environment of 1000 ° C for 2 hours, thereby preparing an activated carbon-supported cobalt-nickel alloy material.

[0041] Specifically, the activated carbon-loaded cobalt-nickel alloy material prepared in Example 1 of the present invention was detected as follows:

[0042] (1) The activated carbon powder used in step b1 in the embodiment of the present invention 1 and the activated carbon-loaded cobalt-nicke...

Embodiment 2

[0049] A kind of activated carbon supported cobalt-nickel alloy material, its preparation method comprises the steps:

[0050] Step a2, 136mg of nickel nitrate and 409mg of cobalt nitrate were all dissolved in 0.5ml of distilled water to obtain a clear mixed solution.

[0051] Step b2, add 0.5 g of activated carbon powder to the clarified mixed solution prepared in step a2, and ultrasonically vibrate to form a slurry after the adsorption is saturated, and then place the slurry in an environment of 100°C under nitrogen protection for 5 hours , and then maintained in an environment of 1000 ° C for 2 hours, thereby preparing an activated carbon-supported cobalt-nickel alloy material.

[0052] Specifically, by electrochemical characterization of the activated carbon-supported cobalt-nickel alloy material prepared in Example 2 of the present invention, it was found that: when the current density of the polarization curve reaches 10mA / cm 2 , electrocatalytic water splitting for hyd...

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Abstract

The invention discloses a preparation method of an activated carbon-supported cobalt-nickel alloy material and electrochemical application of the preparation method. The preparation method comprises the following steps: dissolving a cobalt source and a nickel source with a molar ratio of 1:0.1-10 into distilled water, so as to obtain clear mixed solution; adding activated carbon into the clear mixed solution, forming slurry after adsorption is saturated and performing heat treatment on the slurry, so as to obtain the activated carbon-supported cobalt-nickel alloy material. The activated carbon-supported cobalt-nickel alloy material can be applied in the field of electro-catalytic water decomposition or the field of electro-catalytic oxidation of low molecular weight organic matters. The activated carbon-supported cobalt-nickel alloy material prepared by the invention has excellent performances of hydrogen and oxygen evolution through electro-catalytic water decomposition, and the efficiency of producing hydrogen through electro-catalytic water decomposition is further improved when the organic matters are synthesized through efficient electro-catalytic oxidation, therefore, the preparation method has potential application prospect in the fields of electro-catalytic organic synthesis and hydrogen energy sources.

Description

technical field [0001] The invention relates to the field of electrochemical catalysts, in particular to a preparation method of an activated carbon-supported cobalt-nickel alloy material and its application in the field of electrochemistry. Background technique [0002] With the decrease of fossil energy and the deepening of environmental pollution caused by fossil energy, it is imminent to find clean and green energy. Hydrogen energy is recognized as clean energy, and electrocatalytic water splitting to produce hydrogen is one of the most promising hydrogen production technologies at present. In the electrocatalytic water splitting process to produce hydrogen, the use of high-efficiency electrolytic water hydrogen production catalysts is the main way to improve the hydrogen production efficiency. In the process of electrocatalytic water splitting to produce hydrogen, the oxygen generation reaction can be said to be a useless side reaction, and according to the principle o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B1/04
CPCC25B1/04C25B11/04Y02E60/36
Inventor 张海民刘国强张显吴天星汪国忠张云霞赵惠军
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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