Preparation method of positive electrode catalyst Mn2O3 of lithium carbon dioxide battery

A carbon dioxide, battery cathode technology, applied in battery electrodes, fuel cell type half cells and secondary battery type half cells, circuits, etc., can solve the problems of high cost, short cycle life, unsuitable promotion, etc. Low cost, simple operation, good cycle performance and catalytic activity

Active Publication Date: 2018-01-09
TIANJIN UNIVERSITY OF TECHNOLOGY
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chen Liquan et al. (Energy & Environmental Science, 2014, 7: 677-681) lithium carbon dioxide battery uses Ketjen black as the positive electrode catalyst, the battery can only be operated at a small current density, the cycle life is short, and it can

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 positive electrode catalyst Mn2O3 of lithium carbon dioxide battery
  • Preparation method of positive electrode catalyst Mn2O3 of lithium carbon dioxide battery
  • Preparation method of positive electrode catalyst Mn2O3 of lithium carbon dioxide battery

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] A kind of lithium carbon dioxide battery cathode catalyst Mn 2 O 3 The preparation method, the steps are as follows:

[0024] 1) First, dissolve 0.5 g of PVP (polyvinylpyrrolidone) in 50 ml of absolute ethanol to obtain mixed solution 1.

[0025] 2) Add 1g Mn(CH 3 COO) 2 ·4H 2 O (manganese acetate tetrahydrate) was dissolved in mixed solution 1 to obtain mixed solution 2.

[0026] 3) The above mixed solution 2 was magnetically stirred at 50°C and refluxed for 3 hours; after the reaction was completed, it was naturally lowered to room temperature to obtain a white precipitated product; Dry in vacuum for 12 h to obtain a powdery precursor.

[0027] 4) 0.8 g of the above-obtained precursor was placed in an air atmosphere in a tube furnace and heated to 500 ° C at a heating rate of 0.5 ° C / min, and kept for 4 hours to obtain a porous lithium carbon dioxide battery cathode catalyst material Mn 2 O 3 .

[0028] figure 1 for Mn 2 O 3 XRD (X-ray ...

Example Embodiment

[0033] Example 2

[0034] A kind of lithium carbon dioxide battery cathode catalyst Mn 2 O 3 The preparation method, the steps are as follows:

[0035] 1) First, dissolve 0.6 g of PVP (polyvinylpyrrolidone) in 60 ml of absolute ethanol to obtain mixed solution 1.

[0036] 2) Add 1.2g Mn(CH 3 COO) 2 ·4H 2 O (manganese acetate tetrahydrate) was dissolved in mixed solution 1 to obtain mixed solution 2.

[0037] 3) The above mixed solution 2 was magnetically stirred at 50°C and refluxed for 3 hours; after the reaction was completed, it was naturally lowered to room temperature to obtain a white precipitated product; Dry in vacuum for 12 h to obtain a powdery precursor.

[0038] 4) 0.9 g of the obtained precursor was placed in a tube furnace in an air atmosphere and heated to 600 ° C at a heating rate of 0.5 ° C / min, and kept for 3 hours to obtain a porous lithium carbon dioxide battery cathode catalyst material Mn 2 O 3 .

[0039] Obtained Mn 2 O 3 The XRD diffractogra...

Example Embodiment

[0043] Example 3

[0044] A kind of lithium carbon dioxide battery cathode catalyst Mn 2 O 3 The preparation method, the steps are as follows:

[0045] 1) First, 0.8 g of PVP (polyvinylpyrrolidone) was dissolved in 80 ml of absolute ethanol to obtain mixed solution 1.

[0046] 2) Add 1.5g Mn(CH 3 COO) 2 ·4H 2 O (manganese acetate tetrahydrate) was dissolved in mixed solution 1 to obtain mixed solution 2.

[0047] 3) The above mixed solution 2 was magnetically stirred at 50°C and refluxed for 3 hours; after the reaction was completed, it was naturally lowered to room temperature to obtain a white precipitated product; Dry in vacuum for 12 h to obtain a powdery precursor.

[0048] 4) 0.8 g of the above-obtained precursor was placed in the air atmosphere in a tube furnace and heated to 600 ° C at a heating rate of 1 ° C / min, and kept for 3 hours to obtain a porous lithium carbon dioxide battery cathode catalyst material Mn 2 O 3 .

[0049] Obtained Mn 2 O 3 The XRD di...

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 positive electrode catalyst Mn2O3 of a lithium carbon dioxide battery. The method comprises the following steps of dissolving PVP into absolute ethylalcohol and then adding Mn(CH3COO)2.4H2O; carrying out magnetic stirring and reflux reaction at 40-80 DEG C to obtain a white precipitation product and carrying out vacuum drying to obtain a powdery precursor; and carrying out heat preservation in a tube furnace at 500-700 DEG C for 2-4h to obtain the positive electrode catalyst Mn2O3 of the lithium carbon dioxide battery. The positive electrode catalyst Mn2O3 of the lithium carbon dioxide battery is used for preparing a positive electrode of the lithium carbon dioxide battery. The materials are easy to obtain, and the method is simple in preparation process and technology, low in cost and friendly to environment.

Description

technical field [0001] The invention relates to a preparation method of a positive electrode catalyst of a lithium carbon dioxide battery, more specifically, relates to a preparation method of a rechargeable lithium carbon dioxide battery positive electrode catalyst capable of operating in pure carbon dioxide, and belongs to chemical power sources and related fields. Background technique [0002] With the increasingly serious global environmental pollution and energy crisis, it is imminent to develop clean and efficient energy storage systems. Some environmentally friendly and high-energy-density battery systems, such as Li-ion or Li-air batteries, have been developed to replace traditional fossil fuels. Unfortunately, because of the energy limitations of lithium-ion batteries, they cannot meet the needs of smart grids and electric vehicles for long-distance transportation. However, most of the current research on lithium-air batteries is limited to operation in pure oxygen...

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): H01M4/88H01M4/90H01M12/08
CPCY02E60/10
Inventor 刘喜正鲁姗姗雷晓峰丁轶
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap