A sp doped with monodisperse metal atoms 2 Preparation method of hybrid carbon material

A metal atom, monodisperse technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of high preparation cost of metal-doped carbon materials, uncontrollable introduction position of metal sites, etc., to avoid large particle agglomeration, Superior chemical and electrochemical catalytic performance, uniform distribution effect

Active Publication Date: 2019-07-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high preparation cost of metal-doped carbon materials and uncontrollable metal site introduction position, and provide a sp 2 Preparation method of hybrid carbon material

Method used

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  • A sp doped with monodisperse metal atoms <sup>2</sup> Preparation method of hybrid carbon material
  • A sp doped with monodisperse metal atoms <sup>2</sup> Preparation method of hybrid carbon material
  • A sp doped with monodisperse metal atoms <sup>2</sup> Preparation method of hybrid carbon material

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specific Embodiment approach 1

[0031] Specific implementation mode 1: This implementation mode is a kind of SP doped with monodisperse metal atoms 2 Hybrid carbon materials, sp 2 There are two forms of metal elements in hybrid carbon materials, some metal atoms and sp 2 The homogeneously doped nitrogen atoms in the hybrid carbon framework are directly doped in the sp 2 In the hybrid carbon skeleton, another part of the metal elements is evenly distributed in the form of metal particles with a diameter of 1nm to 50nm in the sp doped with monodisperse metal atoms. 2 On the hybrid carbon material, the sp doped with monodisperse metal atoms 2 The total mass fraction of metal elements in the hybrid carbon material is 0.5%-30%.

specific Embodiment approach 2

[0032] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the metal element is Fe, Co, Ni, Mn, Ti, Cu, Zn, V, Nb, Mo, Sn, Pb and Cr one or several of them. Others are the same as the first embodiment.

specific Embodiment approach 3

[0033] Specific embodiment three: This embodiment is a kind of sp with monodisperse metal atom doping 2 The preparation method of hybrid carbon material is characterized in that it is completed according to the following steps:

[0034] 1. Mixing: sequentially disperse the nitrogen source and the carbon source in water, and stir at a temperature of 10°C to 80°C for 1h to 10h to obtain a nitrogen source / carbon source liquid mixture; the mass ratio of the nitrogen source to the carbon source is (1~30): 1; The mass of described nitrogen source and carbon source and the volume ratio of water are (0.01mg~100mg): 1mL;

[0035] 2. Freeze-drying: the nitrogen source / carbon source liquid mixture is rapidly cooled with liquid nitrogen, and freeze-dried to obtain a nitrogen source / carbon source solid mixture;

[0036] 3. Sintering: put the nitrogen source / carbon source solid mixture in an open container, then wrap it with metal foil with a thickness of 0.01mm~0.1mm, and sinter at a temp...

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Abstract

The invention discloses an sp2 hybrid carbon material doped with single dispersed metal atom and a preparation method of the sp2 hybrid carbon material, and relates to an sp2 hybrid carbon material and the preparation method thereof. The invention aims to solve the problems of high preparation cost of metal doped carbon material and uncontrollable metal introduction site. According to the sp2 hybrid carbon material doped with the single dispersed metal atom, a part of metal element is bonded with N atom evenly through a coordinate bond and doped in a sp2 hybrid carbon framework, and the other part is evenly distributed in the sp2 hybrid carbon material doped by the single dispersed metal atom. The preparation method includes steps of firstly, mixing and acquiring a nitrogen source / carbon source fluid mixture; secondly, freeze-drying and acquiring a nitrogen source / carbon source solid mixture; thirdly, sintering to obtain the sp2 hybrid carbon material doped with the single dispersed metal atom. The invention is mainly used for preparing the sp2 hybrid carbon material doped with the single dispersed metal atom.

Description

technical field [0001] The present invention relates to a sp 2 Preparation method of hybrid carbon material. Background technique [0002] Carbon materials can be used as conductive materials, adsorption materials, catalytic materials, energy storage materials, etc., and have received extensive attention in many fields including energy, materials, and catalysis. Especially the sp represented by carbon nanotubes and graphene 2 Hybrid carbon materials, due to their large conjugated π bonds, lead to a very unique electronic structure in the microcosm, making them have special electrical, mechanical, and chemical properties, and have a wide range of application values. [0003] to sp 2 The modification of hybrid carbon materials is mostly heteroatom doping. Doping non-metallic atoms with different electronegativity from carbon into sp 2 In the hybrid carbon skeleton, its original electrical neutrality can be broken, and its physical and chemical properties can be improved. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90
CPCH01M4/9083Y02E60/50
Inventor 杜春雨韩国康尹鸽平郑宇孙雍容王雅静左朋建程新群马玉林高云智
Owner HARBIN INST OF TECH
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