A platinum-based catalyst with porous carbon nanofibers as a carrier with high catalytic activity and high durability and its preparation method

A technology with high catalytic activity and nanofibers, which is applied in the field of platinum-based catalysts supported by porous carbon nanofibers with high catalytic activity and high durability and its preparation, which can solve the problems of complex catalyst loading process, pollution, and catalyst performance. Instability and other problems, to achieve the effect of improving catalytic activity and durability, improving life and high durability

Active Publication Date: 2017-12-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another solution is mainly by changing the composition and morphology of the catalyst carrier, but it has not been commercialized due to the complicated preparation of the carrier, the loading process of the catalyst, the presence of pollution, and the unstable performance of the catalyst.

Method used

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  • A platinum-based catalyst with porous carbon nanofibers as a carrier with high catalytic activity and high durability and its preparation method
  • A platinum-based catalyst with porous carbon nanofibers as a carrier with high catalytic activity and high durability and its preparation method
  • A platinum-based catalyst with porous carbon nanofibers as a carrier with high catalytic activity and high durability and its preparation method

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Embodiment 1

[0038] A platinum-based catalyst with porous carbon nanofibers as a carrier with high catalytic activity and high durability of the present invention, such as Figure 7 Shown is the surface morphology of platinum-based catalyst electrodes supported by porous carbon nanofibers, such as Figure 8 Shown is the cross-sectional morphology of the platinum-based catalyst electrode supported by porous carbon nanofibers, such as Figure 9 Shown is the cross-sectional morphology of the platinum-based catalyst electrode supported by porous carbon nanofibers, wherein the content of platinum is 10wt%, and the porous carbon nanofibers used as the carrier form a loose three-dimensional network-like penetrating structure, figure 1 is the surface morphology of porous carbon nanofibers, figure 2 The cross-sectional morphology of porous carbon nanofibers, the average fiber diameter of porous carbon nanofibers is 100 nanometers, the pore diameter is 5 to 100 nanometers, the fiber aspect ratio i...

Embodiment 2

[0040] A platinum-based catalyst with porous carbon nanofibers as a carrier with high catalytic activity and high durability of the present invention, such as Figure 7 Shown is the surface morphology of platinum-based catalyst electrodes supported by porous carbon nanofibers, such as Figure 8 Shown is the cross-sectional morphology of the platinum-based catalyst electrode supported by porous carbon nanofibers, such as Figure 9 Shown is the cross-sectional morphology of the platinum-based catalyst electrode supported by porous carbon nanofibers, wherein the content of platinum is 40wt%, and the porous carbon nanofibers used as the carrier form a loose three-dimensional network-like structure, figure 1 is the surface morphology of porous carbon nanofibers, figure 2 It is the cross-sectional morphology of porous carbon nanofibers. The average fiber diameter of porous carbon nanofibers is 1000 nanometers, the pore diameter is 5 to 100 nanometers, and the fiber aspect ratio is...

Embodiment 3

[0042] A platinum-based catalyst with porous carbon nanofibers as a carrier with high catalytic activity and high durability of the present invention, such as Figure 7 Shown is the surface morphology of platinum-based catalyst electrodes supported by porous carbon nanofibers, such as Figure 8 Shown is the cross-sectional morphology of the platinum-based catalyst electrode supported by porous carbon nanofibers, such as Figure 9 Shown is the cross-sectional morphology of a platinum-based catalyst electrode supported by porous carbon nanofibers, wherein the content of platinum is 20wt%, and the porous carbon nanofibers used as a support form a loose three-dimensional network-like structure, figure 1 is the surface morphology of porous carbon nanofibers, figure 2 The cross-sectional morphology of porous carbon nanofibers, the average fiber diameter of porous carbon nanofibers is 800 nanometers, the pore diameter is 5 to 100 nanometers, the fiber aspect ratio is 10, and metal ...

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Abstract

The invention relates to a platinum-based catalyst having high catalytic activity and high durability and adopting porous carbon nano fibers as a carrier and a preparation method of the platinum-based catalyst, and particularly relates to a method of improving the catalytic activity and durability of a catalyst adopting a loose three-dimensional netted through structure composed of the porous carbon nano fibers as a carrier to load nano platinum particles and an application of the catalyst in a proton exchanging membrane fuel cell. According to the platinum-based catalyst adopting the porous carbon nano fibers as the carrier, the porous carbon nano fibers which are used as the carrier form a loose three-dimensional netted through structure, and metal platinum is loaded on the porous carbon nano fibers; the catalytic activity of the platinum-based catalyst adopting the porous carbon nano fibers as the carrier is as follows: the peak potential is 100mA ahead of that of a platinum-carbon catalyst, and the utilization rate of platinum reaches 80 percent; the durability of the platinum-based catalyst adopting the porous carbon nano fibers as the carrier is as follows: the ECSA retention rate after the fuel cell is circulated for 1000 times can reach 50 percent.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and relates to a platinum-based catalyst with high catalytic activity and high durability supported by porous carbon nanofibers and its preparation method and application, in particular to a platinum-based catalyst for improving proton exchange membrane fuel cells The method and application of the catalytic activity and durability of carbon catalysts, specifically, is a kind of catalyst that adopts a porous carbon nanofiber to form a loose three-dimensional mesh-like structure as a carrier to support nano-platinum particles to improve the catalytic activity of the catalyst and Durability method and its application for proton exchange membrane fuel cells. Background technique [0002] Proton exchange membrane fuel cell has become one of the research hotspots in the world because of its common characteristics of fuel cells such as clean and pollution-free, high energy conversion rate, fast start-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/92H01M4/88H01M8/1004
CPCH01M4/88H01M4/92H01M4/926H01M8/10Y02E60/50
Inventor 李光宋健王洋江建明
Owner DONGHUA UNIV
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