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

Cathode C (at) Ni (at) MnO2 catalytic material of aluminum air battery and preparation method thereof

A technology of aluminum-air batteries and catalytic materials, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of difficult to realize large-scale industrial production, complex production process, high production cost, etc., achieve reduced catalytic activity, simple preparation process, The effect of low production cost

Pending Publication Date: 2022-04-22
CHONGQING INST OF EAST CHINA NORMAL UNIV +6
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems that the aluminum-air battery cathode catalyst prepared by the prior art has poor catalytic performance, poor cycle stability, complex manufacturing process, high production cost, and difficulty in realizing large-scale industrial production, the invention provides an aluminum-air battery cathode C@ Ni@MnO 2 Preparation method of catalytic material

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
  • Cathode C (at) Ni (at) MnO2 catalytic material of aluminum air battery and preparation method thereof
  • Cathode C (at) Ni (at) MnO2 catalytic material of aluminum air battery and preparation method thereof
  • Cathode C (at) Ni (at) MnO2 catalytic material of aluminum air battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] Please refer to Figure 1 to Figure 5 As shown, the present invention provides an aluminum-air battery cathode C@Ni@MnO 2 A method for preparing a catalytic material, comprising the following steps:

[0028] S1, the MnO 2 The (manganese dioxide) material is placed in a muffle furnace for high-temperature crystallization treatment to obtain MnO after crystallization 2 , the temperature of crystal transformation treatment is 200-500°C, and the time of crystal transformation treatment is 1-10h;

[0029] S2, MnO after crystallization treatment 2 Mix with nickel source and carbon source materials and put them into microwave equipment for discharge. The microwave discharge time is 1-10 minutes. After discharge, cool to room temperature and sieve to obtain mixed powder;

[0030] S3. Mill the mixed powder in a ball mill for 3-15 hours and sieve to obtain the cathode C@Ni@MnO 2 catalytic material.

[0031] As a specific example, the temperature rise rate of the muffle furn...

Embodiment 1

[0043] A cathode C@Ni@MnO for aluminum-air battery 2 A method for preparing a catalytic material, comprising the following steps:

[0044] S1, the MnO 2 The material is placed in a muffle furnace for high-temperature crystallization treatment to obtain MnO after crystallization 2 , the temperature of crystal transformation treatment is 200°C, the heating rate is 2°C / min, and the time of crystal transformation treatment is 6h;

[0045] S2, MnO after crystallization treatment 2 Mix it with nickel powder and worm graphite at a mass ratio of 2:0.5:1 and put it into a microwave device for discharge. The microwave discharge time is 2 minutes. During the discharge process, pass nitrogen protection and keep stirring the material. After discharge, cool to room temperature and use 80 mesh Sieve through a sieve to obtain mixed powder;

[0046] S3. Mill the mixed powder in a ball mill for 5 hours. The amount of ball milling beads is 100g. After sieving through an 80-mesh sieve, the ca...

Embodiment 2

[0048] A cathode C@Ni@MnO for aluminum-air battery 2 A method for preparing a catalytic material, comprising the following steps:

[0049] S1, the MnO 2 The material is placed in a muffle furnace for high-temperature crystallization treatment to obtain MnO after crystallization 2 , the temperature of crystal transformation treatment is 300°C, the heating rate is 2°C / min, and the time of crystal transformation treatment is 4h;

[0050] S2, MnO after crystallization treatment 2 Mix it with nickel wire and Ketjen black at a mass ratio of 1:1.5:2 and put it into a microwave device for discharge. The microwave discharge time is 3 minutes. During the discharge process, pass nitrogen protection and keep stirring the material. After discharge, cool to room temperature and use 80 Sieve through a mesh sieve to obtain mixed powder;

[0051] S3. Mill the mixed powder in a ball mill for 5 hours. The amount of ball milling beads is 100g. After sieving through an 80-mesh sieve, the catho...

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
Limiting current densityaaaaaaaaaa
Login to View More

Abstract

The invention provides an aluminum air battery cathode C-Ni-MnO2 catalytic material and a preparation method thereof. The preparation method comprises the following steps: carrying out crystal transformation on manganese dioxide by using a high-temperature crystal transformation technology, carrying out microwave discharge treatment on the manganese dioxide, a nickel source and a carbon source, and carrying out ball milling to obtain the cathode catalytic material. A metal nickel source is added, nickel atoms are generated through microwave plasma discharge and attached to the surfaces of manganese dioxide and a carbon source, then high-energy mechanical ball milling is carried out, and the surface of the prepared cathode catalytic material is coated with a good conductive carbon network and tightly-combined nickel atoms. More confinement catalytic reaction active sites are generated at the contact positions of metal nickel atoms, conductive carbon and manganese dioxide during oxygen reduction catalytic reaction, the oxygen adsorption rate is increased, electron transmission paths are increased, electrons are rapidly transferred, polarization is reduced, and the performance of the cathode catalytic material is improved. The prepared catalytic material is high in catalytic activity, stable in performance, low in production cost, simple in process and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of aluminum-air batteries, in particular to an aluminum-air battery cathode C@Ni@MnO 2 Catalytic materials and methods for their preparation. Background technique [0002] Aluminum-air batteries have attracted extensive attention from researchers due to their high specific energy (theoretical specific energy reaches 8100Wh / kg), safety and environmental protection, abundant aluminum resources, low price, convenient transportation and easy maintenance. Aluminum-air batteries are mainly composed of aluminum anodes, air cathodes and electrolytes. As an important part of aluminum-air batteries, air cathodes are composed of catalytic layers, current collectors and waterproof layers. Among them, the cathode material of the catalytic layer is an important medium for catalyzing the oxygen reduction reaction, which has a very important impact on the comprehensive output performance of the aluminum-air battery, so the...

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): H01M4/88H01M4/90
CPCH01M4/8825H01M4/9016H01M4/9041H01M4/9083H01M2004/8689Y02E60/50
Inventor 曾和平杨坤胡梦云冯光李晏
Owner CHONGQING INST OF EAST CHINA NORMAL 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