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Hydrogen fuel power supply vehicle and vehicle-mounted hydrogen fuel cell thereof

A fuel cell and carrier technology, applied in power system fuel cells, battery electrodes, circuits, etc., can solve problems such as particle agglomeration

Active Publication Date: 2022-02-11
上饶市广丰时代科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to overcome the existing electrode catalyst in order to improve performance, when reducing dosage, adopt the Pt nanometerization of small particle diameter, easily cause particle agglomeration Defects and deficiencies, providing a hydrogen fuel power vehicle and its vehicle-mounted hydrogen fuel cell

Method used

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  • Hydrogen fuel power supply vehicle and vehicle-mounted hydrogen fuel cell thereof

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Experimental program
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Effect test

Embodiment 1

[0028] The platinum fiber is made of fibrous platinum metal, and the fiber length distribution range is preferably 10-30 μm. If it is too short in actual use, the effect of entanglement and concatenation will be weakened, and if it is too long, it will be difficult to process and manufacture in the preparation process;

[0029] Platinum microspheres are hollow platinum microspheres with a particle size distribution range of 0.3-10 μm. If the particle size is too small, agglomeration is likely to occur in the actual manufacturing process, and the phenomenon of powder dropping is serious. The actual production cost may increase. If the particle size is too large , easy to be crushed during processing, and large particles are also difficult to be loaded;

[0030] The platinum sheet is selected with an average length-to-diameter ratio of 5:1. The size of the platinum sheet should be 5-30 μm in average particle size. The selection of the size of the platinum sheet must match the siz...

Embodiment 2

[0036] The platinum fiber is made of fibrous platinum metal, and the fiber length distribution range is preferably 100-300 μm. If it is too short, the entanglement and concatenation effect will be weakened in actual use, and if it is too long, it will be difficult to process and manufacture in the preparation process;

[0037] Platinum microspheres are hollow platinum microspheres with a particle size distribution range of 10-30 μm. If the particle size is too small, agglomeration is likely to occur in the actual manufacturing process, and the phenomenon of powder dropping is serious. The actual production cost may increase. If the particle size is too large , easy to be crushed during processing, and large particles are also difficult to be loaded;

[0038] Platinum sheets are selected with a length-to-diameter ratio of 8:1. The size of the platinum sheets should be 5-50 μm in average particle size. The size of the platinum sheets must match the size of the fibers and microsph...

Embodiment 3

[0044] The platinum fiber is made of fibrous platinum metal, and the length distribution range of the fiber is preferably 10-300 μm. If it is too short, the entanglement and concatenation effect will be weakened in actual use, and if it is too long, it will be difficult to process and manufacture in the preparation process;

[0045] Platinum microspheres are hollow platinum microspheres with a particle size distribution range of 0.3-100 μm. If the particle size is too small, agglomeration is likely to occur in the actual manufacturing process, and the phenomenon of powder dropping is serious. The actual production cost may increase. If the particle size is too large , easy to be crushed during processing, and large particles are also difficult to be loaded;

[0046] Platinum flakes use platinum flakes with an aspect ratio of 5:1-10:1. The average particle size of platinum flakes should be 5-50 μm. The choice of platinum flake size must match the size of fibers and microspheres;...

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Abstract

The invention belongs to the technical field of new energy, and particularly relates to a hydrogen fuel power supply vehicle and a vehicle-mounted hydrogen fuel cell thereof. The hydrogen fuel cell product developed by the invention comprises an electrocatalyst, and the electrocatalyst comprises a carrier and an active substance; the active substances comprise platinum fibers, platinum microspheres and platinum sheets; the platinum fibers are fibrous platinum metal, the length-diameter ratio of the fibrous platinum metal is (10: 1)-(20: 1), and the length-diameter ratio is the ratio of length to diameter of the platinum fibers; the platinum microspheres are spherical or sphere-like platinum metal; the platinum sheets are sheet-shaped platinum metal; the mass ratio of the platinum fibers to the platinum microspheres to the platinum sheets is (1-3): (2-5): (3-6). the carrier comprises graphene oxide and polyaniline; and the polyaniline fixes the active substance on the surface of the graphene oxide.

Description

technical field [0001] The invention belongs to the technical field of new energy. More specifically, it relates to a hydrogen fuel power vehicle and its vehicle-mounted hydrogen fuel cell. Background technique [0002] In the stack of hydrogen fuel cells, the oxidation reaction of hydrogen and the reduction reaction process of oxygen on the electrodes are mainly controlled by the catalyst. Catalyst is the main factor affecting the activation and polarization of hydrogen fuel cells. It is regarded as the key material of hydrogen fuel cells and determines the vehicle performance and economical use of hydrogen fuel cell vehicles. [0003] Catalyst selection needs to consider the high temperature resistance and corrosion resistance under working conditions. The commonly used catalyst is Pt / C (Pt nanoparticles dispersed on the carbon powder carrier), but Pt / C has Pt particles with the prolongation of use time. Dissolution, migration, and agglomeration phenomena, the active spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92
CPCH01M4/92H01M4/926H01M2250/20Y02E60/50
Inventor 蔡凯东
Owner 上饶市广丰时代科技有限公司
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