Unlock instant, AI-driven research and patent intelligence for your innovation.

Surface modified blue diamond catalyst of fuel cell, preparation method of surface modified blue diamond catalyst and fuel cell

A surface modification, fuel cell technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of reducing the reaction rate of oxygen and hydrogen ions, no good solution has been developed, and the hydrogen absorption performance affects the degree of contact, etc. Achieve excellent mechanical strength, low price, and improve efficiency

Active Publication Date: 2021-05-07
GUANGZHOU DEPOSON ELECTRIC TECH
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the surface activity of the blue diamond film of the blue diamond catalyst, when it is applied to the cathode of a fuel cell, water easily adheres to its surface and blocks its contact with oxygen, thereby reducing the catalytic efficiency and reducing the concentration of oxygen and hydrogen ions. The reaction rate; when it is applied to the anode of a fuel cell, its insufficient hydrogen absorption performance affects its contact with hydrogen, thereby reducing the catalytic efficiency
There is no good solution yet

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Surface modified blue diamond catalyst of fuel cell, preparation method of surface modified blue diamond catalyst and fuel cell
  • Surface modified blue diamond catalyst of fuel cell, preparation method of surface modified blue diamond catalyst and fuel cell
  • Surface modified blue diamond catalyst of fuel cell, preparation method of surface modified blue diamond catalyst and fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment is a surface-modified blue diamond catalyst for a fuel cell and a preparation method thereof, the preparation method comprising the following steps:

[0039] S1, using nanoparticles with a diameter of 1-4000nm as the base material, and pretreating the base material;

[0040] S2. Deposit a conductive diamond film on the base material by chemical vapor deposition to form a blue diamond catalyst;

[0041] S3. Perform surface modification treatment on the blue diamond catalyst to make it have hydrophobic properties, to obtain a surface-modified blue diamond catalyst.

[0042] Wherein, the base material in step S1 is any one of semiconductor silicon particles, ceramic particles and high-temperature pure metals or metal compounds, and the diameter of the nanoparticles is preferably 1-1000 nm. The thickness of the conductive diamond film generated in step S2 is 1-1000nm. The pretreatment in step S1 is an auxiliary nucleation treatment, including: using diamon...

Embodiment 2

[0046] This embodiment is the same as embodiment 1 except steps S2 and S3 are different from embodiment 1. Wherein, in step S2 of this embodiment, the chemical vapor deposition method is a microwave plasma chemical vapor deposition method, and the conductive diamond film is grown in a microwave reactor, and the growth conditions are as follows: microwave power 500-3000W, base temperature 500-700°C , air pressure 4-6kPa, hydrogen 100-1000sccm, methane 1-20sccm, borane 1-10sccm, growth time 3-10h, to obtain a conductive diamond film with a thickness of 1-3μm.

[0047] In step S3 of the present embodiment, the step of surface modification treatment includes: closing the carbon source and boron source, keeping other parameters in step S2 unchanged, and reacting for 1-30min under the condition of feeding hydrogen, so that the blue diamond catalyst A C-H bond is formed on the surface, thereby obtaining a surface-modified blue diamond catalyst with hydrophobic properties.

Embodiment 3

[0049] This embodiment is the same as the embodiment 1 except step S3 is different from the embodiment 1. In step S3 of this embodiment, the step of surface modification treatment includes: at 80°C, using concentrated sulfuric acid with a concentration of 98% to treat the conductive diamond nanoparticles for 1 hour, so that the surface of the conductive diamond nanoparticles forms ether bonds or aldehyde groups , so as to obtain a surface-modified blue diamond catalyst with enhanced hydrogen absorption performance.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a surface modified blue diamond catalyst of a fuel cell, a preparation method and a fuel cell. The preparation method comprises the following steps of: S1, adopting nanoparticles with the diameter of 1-4000 nm as a substrate material, and pretreating the substrate material; S2, depositing a conductive diamond film on the substrate material by adopting a chemical vapor deposition method to form a blue diamond catalyst; and S3, carrying out surface modification treatment on the blue diamond catalyst to enable the blue diamond catalyst to have a hydrophobic characteristic or enhance the hydrogen absorption performance of the blue diamond catalyst, so as to obtain the surface modified blue diamond catalyst. The surface modified blue diamond catalyst prepared by the preparation method disclosed by the invention is excellent in performance; the catalytic efficiency of the surface modified blue diamond catalyst can be greatly improved by applying the surface modified blue diamond catalyst which has a hydrophobic characteristic or enhanced hydrogen absorption and energy absorption after surface modification treatment to a cathode or an anode of a fuel cell; and therefore, the surface modified blue diamond catalyst provided by the invention can well replace a platinum catalyst to become a catalyst of a fuel cell, and is beneficial to large-scale application of the fuel cell.

Description

technical field [0001] The invention belongs to the technical field of fuel cell catalysts, and in particular relates to a surface-modified blue diamond catalyst for a fuel cell, a preparation method and a fuel cell. Background technique [0002] Proton exchange membrane fuel cell (proton exchange membrane fuel cell), English abbreviation PEMFC) is a kind of fuel cell, which is equivalent to the "reverse" device of water electrolysis in principle. Its single cell is composed of anode, cathode and proton exchange membrane. The anode is the place where the hydrogen fuel is oxidized, and the cathode is the place where the oxidant is reduced. Both electrodes contain catalysts to accelerate the electrochemical reaction of the electrode, and the proton exchange membrane is used as the electrolyte. When working, it is equivalent to a DC power supply, its anode is the negative pole of the power supply, and the cathode is the positive pole of the power supply. [0003] The working p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01M4/88H01M4/90C01B32/28C01B32/26C01B32/25
CPCH01M4/8825H01M4/9075C01B32/26C01B32/28C01B32/25Y02E60/50
Inventor 钟建华张文英
Owner GUANGZHOU DEPOSON ELECTRIC TECH