Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method of high-efficiency and low-cost oxygen reduction catalyst

A catalyst, low-cost technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of rare and expensive platinum-carbon catalyst sources, unreasonable application of corn stalks, waste of biomass, etc., and achieve no potential safety hazard. , low price, the effect of increasing the potential

Active Publication Date: 2018-06-22
JILIN UNIV
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to solve the problem that the source of platinum-carbon catalyst used on the air fuel cell cathode is rare, expensive and easily poisoned;
[0005] Another object of the present invention is to solve the problem that a large amount of corn stalks cannot be used rationally, resulting in the burning of corn stalks in the field, causing environmental pollution such as smog, and wasting this valuable biomass

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 of high-efficiency and low-cost oxygen reduction catalyst
  • Preparation method of high-efficiency and low-cost oxygen reduction catalyst
  • Preparation method of high-efficiency and low-cost oxygen reduction catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1, such as figure 1 As shown, the corn stalks are firstly removed from the roots, skins and leaves, and then the stalks are washed with deionized water. The treated stalks were cut into small pieces of 2 cm. The cut pieces are put into a beaker and dried at 80°C for 24 hours until the moisture in the straw is fully removed. The drying equipment is a blast drying oven. After fully removing the water, put the dried straw into a traditional Chinese medicine powder machine for 15 minutes to obtain a uniform straw powder.

[0030] Step 2. Mix the straw powder prepared in step 1 with potassium hydroxide and water in a ratio of 1g:3g:200mL and then stir with a magnetic stirrer at a speed of 800rpm for 24h, and place the stirred mixture in a 105°C refrigerator Oven until fully dehydrated from the mixture. Grind the dried mixture into a uniform powder with a mortar, and the grinding process is rapid to prevent the mixture from absorbing moisture. Then the mixture was p...

Embodiment 2

[0034] The product in step 2 in Example 1 was mixed evenly with melamine and cobalt nitrate in a ratio of 1g:2g:0.1g, and then put into the tube furnace again after being evenly ground in a mortar. The heating rate of the tube furnace was controlled at 5°C / min, and the temperature was raised to 900°C for 1 hour. Add the sample to 200mL of 3mol / L hydrochloric acid solution, then pickle at 800rpm for 8h, then wash the product with deionized water until the pH value is 7, filter the water out with a vacuum filter, and then wash it at 80°C Dry in an oven for 3 hours to obtain a straw-derived oxygen reduction catalyst.

Embodiment 3

[0036] The product in step 2 in Example 1 is mixed with urea and cobalt chloride in a ratio of 1g:2g:0.1g, and then put into the tube furnace again after being uniformly ground in a mortar. The heating rate of the tube furnace was controlled at 5°C / min, and the temperature was raised to 900°C for 1 hour, and ammonia gas was introduced during the pyrolysis process. Add the sample to 200mL of 3mol / L hydrochloric acid solution, then pickle at 800rpm for 8h, then wash the product with deionized water until the pH value is 7, filter the water out with a vacuum filter, and then wash it at 80°C Dry in an oven for 3 hours to obtain a straw-derived oxygen reduction catalyst.

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

No PUM Login to View More

Abstract

The invention discloses a preparation method of a high-efficiency and low-cost oxygen reduction catalyst. The method comprises the steps of (1) cleaning recycled corn straws and cutting the corn straws into patches of 2cm; (2) mixing straw powder produced in the step (1) with an activating agent at the mass ratio of 1:3, dissolving a mixture into water, stirring for 24h, carrying out acid pickling, washing the mixture by using deionized water until the pH value is 7 and obtaining a carbon material with a high-specific surface area spongy structure; (3) mixing the carbon material treated in thestep (2) with a nitrogen precursor and a cobalt precursor at the mass ratio of 1:2:0.1, dissolving the mixture into water to mix evenly and carrying out thermal decomposition; and (4) carrying out acid pickling on a product in the step (3) by using 3mol / L of hydrochloric acid solution, washing the product by using the deionized water until the pH value is 7 and obtaining the oxygen reduction catalyst doped with nitrogen and cobalt elements. The preparation method has the beneficial effects that the corn straws can be turned into treasure, so that the problem of environmental pollution is solved; and the high-efficiency and low-cost oxygen reduction catalyst has the advantages of being convenient to use, free of a potential safety hazard, wide in source and low in price.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a preparation method of an oxygen reduction catalyst with high efficiency and low cost. Background technique [0002] Since the 19th century, human society has continued to consume non-renewable fossil energy, which has not only caused serious environmental pollution, but also led to an energy crisis for mankind. In order to solve these problems, a pollution-free, renewable green new energy is urgently needed to replace fossil energy. Air fuel cells have the characteristics of low fuel source and non-polluting products, and have great potential to replace fossil energy and become the main energy source of human society. After years of research, the power generation performance of air fuel cells has been significantly improved, but it has not yet been popularized in various power supply devices. The reason is that the catalyst widely used on the cathode of air fuel cells is ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90
CPCH01M4/90Y02E60/50
Inventor 刘镇宁李致远卢国龙王蜜董旭梁嵩孙航李家亿
Owner JILIN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com