Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method and application of high-performance nitrogen-doped biomass oxygen reduction catalyst

A biomass and catalyst technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problem of high cost and achieve the effects of simple steps, good oxygen reduction catalytic activity, and good performance

Inactive Publication Date: 2020-06-19
BEIJING UNIV OF CHEM TECH
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the relatively high cost of the current hydrogen-oxygen fuel cell cathode oxygen reduction catalyst

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
  • Preparation method and application of high-performance nitrogen-doped biomass oxygen reduction catalyst
  • Preparation method and application of high-performance nitrogen-doped biomass oxygen reduction catalyst
  • Preparation method and application of high-performance nitrogen-doped biomass oxygen reduction catalyst

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0041] Weigh 5 g of fresh dried black fungus, rinse with deionized water, put them into a polytetrafluoroethylene hydrothermal kettle, make the black fungus account for 1 / 3 of the volume of the hydrothermal kettle, add deionized water to the reaction kettle 2 / 3 of the volume, then put the polytetrafluoroethylene hydrothermal kettle into the stainless steel high-pressure digestion tank and pre-tighten it. Put the stainless steel high-pressure digestion tank into a heating oven, raise the temperature to 180 °C, keep it for 24 h, and then lower it to room temperature. Take out the black fungus biomass carbon black in the polytetrafluoroethylene hydrothermal kettle, use the Buchner funnel to wash it, and wash it with deionized water and absolute ethanol for more than 3 times until the filtrate is colorless. Collect the dried black fungus biomass carbon black after washing, put it in an oven, and dry it at 50 °C for 12 h. Finally, put the biomass carbon black into a mortar and grin...

specific Embodiment 2

[0048] In this example, the nitrogen source in Example 1 was replaced with ammonia water and urea for experimentation.

[0049] The biomass carbonization precursor was prepared according to the method in Example 1.

[0050] The biomass carbonized precursor sample doped with nitrogen and pore-forming agent was transferred to a porcelain boat and put into a tube furnace for calcination. The former porcelain boat loaded with melamine was not placed during calcination. The calcination temperature was kept the same as that in Example 1, and after calcination, the "black fungus precursor + ammonia + urea" oxygen reduction catalyst was obtained.

[0051] The rotating disk electrode half-cell test was carried out on the "black fungus precursor + ammonia + urea" oxygen reduction catalyst, and the test method was consistent with that in Example 1.

[0052] Such as Figure 4 and Figure 5 As shown, the biomass catalyst provided by this specific example has an oxygen reduction polariza...

specific Embodiment 3

[0060] In this example, different calcination temperatures were used to synthesize nitrogen-doped biomass oxygen reduction catalysts. The calcination temperatures were adjusted to 800°C, 900°C, and 950°C, respectively.

[0061] The biomass carbonization precursor was prepared according to the method in Example 1.

[0062]The biomass carbonized precursor sample doped with nitrogen and pore-forming agent was transferred to three porcelain boats of the same size, and placed in a tube furnace for calcination. During the calcination process, a porcelain boat containing 1.5 g of melamine was placed in front of the sample porcelain boat, and the inside of the quartz tube was filled with flowing inert gas. Preferably, the inert gas uses nitrogen (N 2 ). The heating rate of the tube furnace was set at 5°C / min, the calcination temperatures of the three samples corresponding to the tube furnace were set at 700°C, 800°C, and 950°C, and the calcination time was set at 2 h. After the cal...

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
Active areaaaaaaaaaaa
Peak power densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method and application of a high-performance nitrogen-doped biomass oxygen reduction catalyst. The black fungus biomass material is treated, the invention provides a simple, convenient and efficient preparation method of the non-noble metal oxygen reduction catalyst, the non-noble metal oxygen reduction catalyst which is low in cost, high in activity and capable of being prepared on a large scale is finally controllably synthesized by regulating and controlling two steps of nitrogen doping and pore forming, and the catalyst is applied to a hydrogen-oxygenfuel total battery.

Description

technical field [0001] The patent of the present invention relates to the technical field of fuel cell electrocatalysis, in particular to a preparation method and application of a high-performance nitrogen-doped biomass oxygen reduction catalyst. Background technique [0002] The hydrogen-oxygen fuel cell is an electrochemical device that can directly convert the chemical energy in hydrogen and oxygen into electrical energy. Because of its advantages such as low-temperature start-up, low noise, clean emission products, high energy density and high fuel combustion efficiency, hydrogen Oxygen fuel cells have gained widespread attention. It is considered to be the most competitive and promising new type of clean energy in the 21st century. [0003] The core component of a hydrogen-oxygen fuel cell is a membrane electrode, which is composed of an anode, a cathode, and a solid electrolyte (such as a Nafion membrane), in which hydrogen and oxygen undergo oxidation and reduction...

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): H01M4/88H01M4/90H01M4/96
CPCH01M4/8828H01M4/9083H01M4/96Y02E60/50
Inventor 庄仲滨王兴栋朱威
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com