Preparation method of dendritic-based nitrogen-doped mesoporous carbon and NiO-CoS2 composite electrode material

A nitrogen-doped mesoporous carbon and composite electrode technology, which is applied in the preparation/purification of carbon, chemical instruments and methods, cobalt compounds, etc., can solve the problems of harsh process conditions, uncontrollable reaction ratio, large particle size, etc. The preparation process is simple, the electrocatalytic activity is high, and the process conditions are mild.

Pending Publication Date: 2021-02-05
SUIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, solve the existing technology to prepare nitrogen-doped mesoporous carbon and NiO-CoS 2 Composite electrode materials have the problems of large particle size, uncontrollable reaction ratio and harsh process conditions

Method used

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  • Preparation method of dendritic-based nitrogen-doped mesoporous carbon and NiO-CoS2 composite electrode material
  • Preparation method of dendritic-based nitrogen-doped mesoporous carbon and NiO-CoS2 composite electrode material
  • Preparation method of dendritic-based nitrogen-doped mesoporous carbon and NiO-CoS2 composite electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: A Dendrobium Nitrogen Doped Mesoporous Carbon and NiO-CoS 2 The preparation method of the composite electrode material is specifically completed according to the following steps:

[0019] 1. Pretreatment of tree tongue: take 80g tree tongue, add 100mL 0.5mol / L NaOH solution, soak in a water bath at 40°C for 30-50 minutes, control the ultrasonic frequency to 50kHz for 40 minutes, wash with distilled water until neutral, and put it in an oven Dry at 80°C, then pulverize, add 0.5mol / L HNO 3 solution, stirred at a constant speed for 7 to 10 hours, washed with distilled water until neutral, and dried in vacuum at 60°C for use;

[0020] 2. Preparation of composites of nitrogen-doped mesoporous carbon and NiO: put the sample obtained in step 1 into 1.0 mol / L Ni(NO 3 ) 2 In solution, the tongue and Ni(NO 3 ) 2 The mass ratio is 4:1, after stirring at a constant speed for 12 to 24 hours, vacuum-dry at 60°C, then put the sample into a tube furnace, and gradually h...

Embodiment 2

[0026] Example 2: A Dendrobium Nitrogen Doped Mesoporous Carbon and NiO-CoS 2 The preparation method of the composite electrode material is specifically completed according to the following steps:

[0027] 1. Pretreatment of tree tongue: Take tree tongue as carbon source, add 150mL 0.5mol / L NaOH, soak in water bath at 40°C for 30-50min, control ultrasonic frequency at 50kHz for 50min, wash with distilled water until neutral, put Dry in an oven at 80°C, then pulverize, add 1.0mol / L HNO 3 solution, stirred at a constant speed for 7 to 10 hours, washed with distilled water until neutral, and dried in vacuum at 60°C for use;

[0028] 2. Preparation of composites of nitrogen-doped mesoporous carbon and NiO: put the sample obtained in step 1 into 1.0 mol / L Ni(NO 3 ) 2 In solution, the tongue and Ni(NO 3 ) 2 The mass ratio is 5:1, after stirring at a constant speed for 12 to 24 hours, vacuum-dry at 60°C, then put the sample into a tube furnace, and gradually heat up to an air at...

Embodiment 3

[0034] Example 3: A Dendrobium Nitrogen Doped Mesoporous Carbon and NiO-CoS 2 The preparation method of the composite electrode material is specifically completed according to the following steps:

[0035] 1. Pretreatment of tree tongue: Take tree tongue as carbon source, add 200mL 0.5mol / L NaOH, soak in water bath at 40°C for 30-50min, control ultrasonic frequency to 50kHz for 60min, wash with distilled water until neutral, put Dry in an oven at 80°C, then pulverize, add 2.0mol / L HNO 3 solution, stirred at a constant speed for 7 to 10 hours, washed with distilled water until neutral, and dried in vacuum at 60°C for use;

[0036] 2. Preparation of composites of nitrogen-doped mesoporous carbon and NiO: put the sample obtained in step 1 into 1.0 mol / L Ni(NO 3 ) 2 In solution, the tongue and Ni(NO 3 ) 2 The mass ratio is 6:1, after stirring at a constant speed for 12 to 24 hours, vacuum-dry at 60°C, then put the sample into a tube furnace, and gradually increase the tempera...

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Abstract

The invention discloses a preparation method of a dendritic-tongue-based nitrogen-doped mesoporous carbon and NiO-CoS2 composite electrode material. The method comprises the following steps: (1) pretreating dendritic tongues; (2) preparing a compound of nitrogen-doped mesoporous carbon and NiO; (3) preparing a mixed solution of cobalt acetate and amino acid; and (4) preparing a nitrogen-doped mesoporous carbon and NiO-CoS2 composite electrode material. The preparation method disclosed by the invention has the advantages that (1) by adopting the preparation method, the synthesis of the nitrogen-doped mesoporous carbon and NiO-CoS2 composite electrode material is realized; (2) compared with the existing non-noble metal electrode material, the nitrogen-doped mesoporous carbon and NiO-CoS2 composite electrode material prepared by the invention has better stability and efficient electrocatalytic activity; (3) the preparation process is simple, the process conditions are mild and the operation is easy; and (4) the biomass is fully and effectively utilized, the production cost is reduced, and a new thought for preparing the mesoporous carbon composite material is expanded.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to a dendrobyl nitrogen-doped mesoporous carbon and NiO-CoS 2 Preparation method of composite electrode material. Background technique [0002] Mesoporous carbon and noble metal (Pt, Pd, Ru) composites have good catalytic activity and stability, and are widely used in water electrolysis, fuel cells and other fields. Due to limited precious metal resources and high prices, the cost of catalysts is high, which is not conducive to the industrialization of catalysts. Transition metal oxides and transition metal chalcogenides have the characteristics of high catalytic activity, good stability, and low production cost, and can replace noble metals in the field of catalysis. NiO-CoS 2 Combined with nitrogen-doped mesoporous carbon composites, it has the advantages of mesoporous carbon, transition metal oxides and transition metal chalcogenides, and has good electr...

Claims

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Application Information

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IPC IPC(8): C01B32/05C01G53/04C01G51/00
CPCC01B32/05C01G53/04C01G51/30C01P2004/80C01P2006/17
Inventor 赵东江田喜强马松艳董艳萍黄守磊白晓波
Owner SUIHUA UNIV
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