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

Preparation method of high-performance calcium manganate energy storage electrode material

A high-performance calcium manganate and energy storage electrode technology, which is applied to battery electrodes, circuits, electrical components, etc., to achieve the effects of simple preparation method, increased conductivity, and wide source of raw materials

Active Publication Date: 2020-05-29
WUYI UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As an emerging electrode material, calcium manganate has good electrochemical properties, and there is no literature report on its use in zinc-ion batteries.

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-performance calcium manganate energy storage electrode material
  • Preparation method of high-performance calcium manganate energy storage electrode material
  • Preparation method of high-performance calcium manganate energy storage electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1), the preparation of high performance calcium manganate energy storage electrode material comprises the following steps:

[0024] S1), 0.1mol L -1 Calcium chloride, 0.2mol L -1 Manganese salt and 0.75mol L -1 Potassium hydroxide, being dissolved in the mixed solvent that is the ratio of ethanol and water is 5:3, after stirring until completely dissolving, obtain precursor solution, wherein, manganese salt is the mixture of manganese chloride and potassium permanganate, wherein, The manganese salt is manganese chloride and potassium permanganate in a mass ratio of 8:2;

[0025] S2), pour the precursor solution into the reaction kettle, react in an oven at 150°C for 12 hours, and then centrifuge, wash, and dry to synthesize CaMn 2 o 4 Powder, denoted as CaMn 2 o 4 -blank;

[0026] S3), the CaMn synthesized in step S2) 2 o 4 powder CaMn 2 o 4 -blank is placed in a tube furnace, under the atmosphere of ammonia gas, and at a temperature of 700°C, anneal for 90 m...

Embodiment 2-5

[0035] Based on the scheme of Example 1, the properties of calcium manganate after annealing are affected by adjusting different annealing conditions, and the relationship is shown in Table 1.

[0036] Table 1: Annealing regulation of calcium manganate

[0037]

[0038]

[0039] Wherein, embodiment 1, 2 and 3 illustrate that the annealing temperature has a great influence on the performance of manganic acid, and embodiment 1, 4 and 5 illustrate that the time factor also affects the performance of calcium manganate to a certain extent. The performance of calcium manganate after annealing in the described embodiments 2-5 is not as good as the case of embodiment 1. As can be seen from the above examples, under the atmosphere of ammonia gas, calcium manganate CaMn 2 o 4 After the annealing reaction, the morphology of the material changes, while the conductivity increases and the number of active sites increases, thereby effectively improving the specific capacity and rate ...

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 provides a preparation method of a high-performance calcium manganate energy storage electrode material. According to the method, with a calcium source and a manganese source used as precursors, and deionized water and absolute ethyl alcohol used as solvents, a calcium manganate nano material can be synthesized through a hydrothermal reaction; the calcium manganate nano material is subjected to centrifuging, cleaning and drying treatment; the calcium manganate nano material synthesized through the hydrothermal reaction is put into a tubular furnace, and annealing treatment is performed for 30-180 minutes at 100-900 DEG C in an ammonia atmosphere, so that the high-performance calcium manganate nano material can be obtained. The preparation method is simple to operate, wide inraw material source, low in cost, safe, non-toxic, environment-friendly and extremely easy for large-scale production. After the annealing treatment, the shape of the sample is changed, the conductivity of the sample is improved, the specific surface area of the sample is increased, and the active sites of the sample are increased; and therefore, the capacitance performance and rate capability ofcalcium manganate are effectively improved, and the calcium manganate can have a very wide application prospect in the aspect of energy storage.

Description

technical field [0001] The invention relates to the technical field of energy storage materials, in particular to a preparation method of a high-performance calcium manganate energy storage electrode material. Background technique [0002] With the rapid development of the global economy and the increasing demand for energy, the environmental pollution caused by the excessive consumption of fossil fuels has attracted great attention from all countries in the world, and the development and research of sustainable and renewable energy is imminent. In recent years, the state has vigorously supported the development and research of secondary clean energy, and new energy sources represented by solar energy, wind energy, tidal energy, geothermal energy and biomass energy have emerged. They have the advantages of abundant sources, renewable, green and environmental protection, etc. However, these new energy sources are affected by factors such as region, season, and environment, an...

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): H01M4/58H01M4/505H01M10/054
CPCH01M4/5825H01M4/505H01M10/054Y02E60/10
Inventor 卢锡洪曾思琪裴晓康宋寅郑得洲王付鑫徐维
Owner WUYI UNIV