Platinum-based catalyst having high catalytic activity and high durability and adopting porous carbon nano fiber as carrier and preparation method of platinum-based catalyst

A high catalytic activity, nanofiber technology, which is applied in the field of platinum-based catalysts with high catalytic activity and high durability using porous carbon nanofibers as a carrier and the preparation thereof, can solve the problems of complicated catalyst loading process, unstable catalyst performance, etc. There are pollution and other problems, to achieve the effect of improving catalytic activity and durability, improving life, and improving power generation performance

Active Publication Date: 2015-07-01
DONGHUA UNIV
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  • 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 comp

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  • Platinum-based catalyst having high catalytic activity and high durability and adopting porous carbon nano fiber as carrier and preparation method of platinum-based catalyst
  • Platinum-based catalyst having high catalytic activity and high durability and adopting porous carbon nano fiber as carrier and preparation method of platinum-based catalyst
  • Platinum-based catalyst having high catalytic activity and high durability and adopting porous carbon nano fiber as carrier and preparation method of platinum-based catalyst

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Example Embodiment

[0037] Example 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 the platinum-based catalyst electrode with porous carbon nanofibers as the carrier, such as Picture 8 Shown is the cross-sectional morphology of the platinum-based catalyst electrode with porous carbon nanofibers as the carrier, such as Picture 9 Shown is the cross-sectional morphology of a platinum-based catalyst electrode with porous carbon nanofibers as a carrier, where the platinum content is 10% by weight, and the porous carbon nanofibers as the carrier constitute a loose three-dimensional network penetrating structure. figure 1 Is the surface morphology of porous carbon nanofibers, figure 2 It is a porous carbon nanofiber cross-section morphology. The average fiber diameter of the porous carbon nanofiber is 100 nanometers, the pore diameter is 5-100 nanom...

Example Embodiment

[0039] Example 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 the platinum-based catalyst electrode with porous carbon nanofibers as the carrier, such as Picture 8 Shown is the cross-sectional morphology of the platinum-based catalyst electrode with porous carbon nanofibers as the carrier, such as Picture 9 Shown is the cross-sectional morphology of a platinum-based catalyst electrode with porous carbon nanofibers as a carrier, in which the platinum content is 40% by weight, and the porous carbon nanofibers as the carrier constitute a loose three-dimensional network penetrating structure. figure 1 Is the surface morphology of porous carbon nanofibers, figure 2 It is a porous carbon nanofiber cross-sectional morphology. The average fiber diameter of the porous carbon nanofiber is 1000 nanometers, the pore diameter is 5-100...

Example Embodiment

[0041] Example 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 the platinum-based catalyst electrode with porous carbon nanofibers as the carrier, such as Picture 8 Shown is the cross-sectional morphology of the platinum-based catalyst electrode with porous carbon nanofibers as the carrier, such as Picture 9 Shown is the cross-sectional morphology of a platinum-based catalyst electrode with porous carbon nanofibers as a carrier, where the platinum content is 20% by weight. The porous carbon nanofibers as the carrier constitute a loose three-dimensional network penetrating structure. figure 1 Is the surface morphology of porous carbon nanofibers, figure 2 It is a porous carbon nanofiber cross-sectional morphology. The average fiber diameter of the porous carbon nanofiber is 800 nanometers, the pore diameter is 5-100 nanomet...

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