Preparation method of manganese magnesium borate-doped magnesium ion battery positive electrode material

A technology of manganese borate magnesium magnesium ion and battery positive electrode, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems that magnesium batteries cannot meet the use environment, and achieve large-scale industrial production, good cycle stability, and low volume The effect of rate of change

Active Publication Date: 2018-04-20
NINGBO POLYTECHNIC
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this level of magnesium batteries is far from being able to meet the increasingly complex use environment.

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 manganese magnesium borate-doped magnesium ion battery positive electrode material
  • Preparation method of manganese magnesium borate-doped magnesium ion battery positive electrode material
  • Preparation method of manganese magnesium borate-doped magnesium ion battery positive electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Pretreatment: Weigh the raw materials according to the composition of the positive electrode material of the battery, including 1.0mol magnesium nitrate, 1.0mol manganese nitrate, 0.08mol ammonium fluoride, 1.96mol trimethyl borate, and dissolve magnesium nitrate, manganese nitrate and ammonium fluoride respectively Prepare a solution with a concentration of 0.5 mol / l in absolute ethanol, dissolve trimethyl borate in methanol to prepare a solution with a concentration of 0.25 mol / l, then mix the dissolved solutions and stir evenly to obtain a mixed solution.

[0032] Precursor preparation: add deionized water with a volume ratio of 1:1 to the mixed solution, stir vigorously to obtain a jelly-like mixture, then put the jelly-like mixture into a stainless steel tank lined with polytetrafluoroethylene, heat up Heat it at 200°C for 48 hours to react to obtain a colloidal precipitate and dry it. Then, under the protection of an inert gas, pre-calcine at 300°C for 8 hours to o...

Embodiment 2

[0036] Pretreatment: Weigh the raw materials according to the composition of the positive electrode material of the battery, including 1.0mol magnesium nitrate, 1.0mol manganese nitrate, 0.09mol ammonium fluoride, 1.98mol trimethyl borate, and dissolve magnesium nitrate, manganese nitrate and ammonium fluoride respectively Prepare a solution with a concentration of 0.5 mol / l in absolute ethanol, dissolve trimethyl borate in methanol to prepare a solution with a concentration of 0.25 mol / l, then mix various dissolved solutions and stir evenly to obtain a mixed solution.

[0037] Precursor preparation: add deionized water with a volume ratio of 1:1 to the mixed solution, stir vigorously to obtain a jelly-like mixture, then put the jelly-like mixture into a stainless steel tank lined with polytetrafluoroethylene, heat up Heat it at 160°C for 72 hours to obtain a colloidal precipitate and dry it. Then, under the protection of an inert gas, pre-calcine at 250°C for 8 hours to obtain a...

Embodiment 3

[0041] Pretreatment: Weigh the raw materials according to the composition of the positive electrode material of the battery, including 1.0mol magnesium nitrate, 1.0mol manganese nitrate, 0.16mol ammonium fluoride, 1.92mol trimethyl borate, and dissolve magnesium nitrate, manganese nitrate and ammonium fluoride respectively Prepare a solution with a concentration of 0.5 mol / l in absolute ethanol, dissolve trimethyl borate in methanol to prepare a solution with a concentration of 0.25 mol / l, then mix various dissolved solutions and stir evenly to obtain a mixed solution.

[0042] Precursor preparation: add deionized water with a volume ratio of 1:1 to the mixed solution, stir to obtain a jelly-like mixture, then put the jelly-like mixture into a stainless steel tank lined with polytetrafluoroethylene, and heat up to 250°C, heat preservation for 12h to react to obtain a colloidal precipitate and dry it, then pre-calcine at 350°C for 4h under the protection of an inert gas to obtai...

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 belongs to the technical field of a battery material, and in particular relates to a preparation method of a manganese magnesium borate-doped magnesium ion battery positive electrode material. The manganese magnesium borate-doped magnesium ion battery positive electrode material consists of the following components: magnesium nitrate, manganese nitrate, ammonium fluoride and trimethyl borate. The battery synthetic material is cheap and easily available, the components are simple, the synthesized product manganese magnesium borate has high purity, and the manganese magnesium borate-doped magnesium ion battery positive electrode material is a novel polyanion positive electrode material; the borate has lower molar mass and less volume change rate before and after charging and discharging, so that the material has high energy density and high cycle performance theoretically; doping modification can improve the electronic conductivity and the ionic conductivity of the material, so that the electrochemical properties of the material can be improved. The manganese magnesium borate can pass through a three-dimensional network structure formed by connecting strong covalent bonds and form a gap which has higher coordination and is occupied by other metal ions, so that the polyanion type compound positive electrode material has a crystalline phase structure different from other positive electrode materials and has various prominent properties determined by the structure.

Description

technical field [0001] The invention belongs to the technical field of battery materials, and in particular relates to a preparation method of a positive electrode material of a manganese-magnesium-magnesium-magnesium ion battery doped with borate. Background technique [0002] Batteries are closely related to our lives. From the earlier nickel-cadmium batteries to the current lithium-ion batteries, battery technology is constantly innovating and developing. At present, lithium-ion batteries are widely used in mobile power supplies, household appliances, electric vehicles and energy storage equipment, etc., but lithium reserves on the earth are not abundant. With the development of lithium-ion battery technology, people's demand for lithium is increasing. Getting bigger, lithium is in danger of being depleted in the near future. Therefore, it is an urgent requirement to develop a new rechargeable battery system with low price, environmental friendliness, abundant resources,...

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): H01M4/36H01M4/505H01M4/58
CPCH01M4/364H01M4/505H01M4/5825Y02E60/10
Inventor 袁正勇黄伟豪倪佳颖
Owner NINGBO POLYTECHNIC
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