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Metal/carbon nano composite porous membrane and preparation method thereof

A carbon nanocomposite, porous membrane technology, applied in the field of porous membranes

Active Publication Date: 2012-09-19
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the technology of using porous membranes composed of metal and carbon nanocomposite fibers to combine the corrosion resistance of carbon and the high electrical conductivity of metal is still blank.

Method used

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  • Metal/carbon nano composite porous membrane and preparation method thereof
  • Metal/carbon nano composite porous membrane and preparation method thereof
  • Metal/carbon nano composite porous membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Add 0.01mol nickel oxalate dihydrate and 0.02mol PVP into 6mol / L ammonia water ethanol solution, and keep stirring at room temperature to obtain a uniform blue sol. The sol is continuously stirred to make the sol pregelatinize into a slurry with a certain viscosity. Drop the slurry onto the cleaned alumina surface and dry until the solvent evaporates completely. The sample obtained after drying was heat-treated under the protection of an inert atmosphere at 550° C. for 2 hours to form a porous nickel-carbon film.

[0053] figure 1 It is the X-ray diffraction spectrum of the porous nickel carbon film in this example. figure 1 The three sharp diffraction peaks (44.5°, 51.8° and 76.4°) indicated by the solid diamonds in the center correspond to metallic nickel (Standard Card Library No.: 04-0850), and the one broad peak indicated by the open circles corresponds to graphitic carbon (Standard Card library number: 41-1487).

[0054] figure 2 It is a scanning electron mi...

Embodiment 2

[0057] Add 0.01mol nickel oxalate dihydrate and 0.02mol PVP into 8mol / L ammonia water ethanol solution, and keep stirring at room temperature to obtain a uniform blue sol. The sol is continuously stirred to make the sol pregelatinize into a slurry with a certain viscosity.

[0058] All the other contents are the same as those described in Example 1.

[0059] The membrane-substrate bonding degree and pore size distribution of the porous nickel-carbon membrane obtained in this example are shown in Table 1 below.

[0060] It can be seen from the data in Table 1 that the porous membrane has a strong bond with alumina, but the average pore size is smaller than that of Example 1.

Embodiment 3

[0062] Add 0.01mol nickel oxalate dihydrate and 0.02mol PVP into 5mol / L ammonia water ethanol solution, and keep stirring at room temperature to obtain a uniform blue sol. The sol is continuously stirred to make the sol pregelatinize into a slurry with a certain viscosity.

[0063] All the other contents are the same as those described in Example 1.

[0064] The membrane-substrate bonding degree and pore size distribution of the porous nickel-carbon membrane obtained in this example are shown in Table 1 below.

[0065] It can be seen from the data in Table 1 that the porous membrane has a strong bond with alumina, but the average pore size is also smaller than that of Example 1.

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Abstract

The invention relates to a metal / carbon nano composite porous membrane and a preparation method thereof. The method comprises the following steps: a) adding a metal salt and a polymer, which can be pyrolyzed into carbon in an inert atmosphere, into an ammonia water solution, continuously stirring to obtain a uniform sol, and continuing stirring the uniform sol until the sol is pregelated into a pulp; b) applying the pulp obtained in the step a) onto the surface of a solid substrate, and drying to obtain a coating; and c) carrying out heat treatment on the coating obtained in the step b), thereby obtaining the metal / carbon nano composite porous membrane on the surface of the solid substrate.

Description

technical field [0001] The invention belongs to the field of functional materials, and relates to a method for preparing a metal / carbon nanocomposite porous film on a solid surface and the porous film prepared therefrom. The metal / carbon nanocomposite porous film has corrosion resistance and high electrical conductivity It is suitable for various types of substrates, and can be effectively used in the fields of catalysis, electrochemistry, sensors, and wave-absorbing devices. Background technique [0002] Nanocomposite materials are widely used in aerospace because their components can learn from each other in terms of performance and produce synergistic effects, and combined with the advantages of nano-size effects, making their comprehensive performance superior to the original constituent materials and meeting various requirements. , national defense, transportation, sports and other fields. Generally speaking, nanocomposites are synthesized and studied in the form of po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C20/08B82Y30/00
Inventor 温兆银胡英瑛吴相伟曹佳弟吴梅芬张敬超
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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