Chargeable magnesium battery

A magnesium battery and battery technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problem of low open circuit voltage, achieve good safety, great development and application prospects, and low price

Inactive Publication Date: 2004-10-06
NANKAI UNIV
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With Mg x Mo 2 S 3 As the positive electrode and the ether solution of cycloaluminate as the electrolyte, good results have been achieved, making it possible to realize rechargeable magnesium batteries, but the open circuit voltage is as low as 1.1-1.3V

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
  • Chargeable magnesium battery
  • Chargeable magnesium battery
  • Chargeable magnesium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Production of Negative Electrode

[0026] MgH 2 Mix with metal elements Ni and Ti in a molar ratio of 1:0.01:0.01, ball mill for 6 hours under argon atmosphere, keep warm for 4 hours at 560°C under argon atmosphere, cool, and then ball mill in a high-speed ball mill for 80 hours, the powder size 50-600nm, put the magnesium alloy powder into 0.01M magnesium fluoride and soak for 1 minute, make the magnesium alloy powder, carbonyl nickel powder and PTFE into a paste, coat it on the copper mesh, press it under 30MPa pressure to make a diameter of 13mm, The negative electrode sheet with a thickness of 1 mm was stored in a vacuum desiccator.

[0027] Positive electrode production

[0028] Weigh an appropriate amount of CoCl 2 ·6H 2 O and MgCl 2 ·6H 2 O, the molar ratio of the two is 2:1, prepare a mixed solution with a certain concentration, adjust the pH to 6~7 with ammonia water, and then add it to an appropriate amount of oxalic acid solution, a large amount of prec...

Embodiment 2

[0033] Negative pole piece is made identical with embodiment 1

[0034] Production of the positive pole piece

[0035] Under hydrogen atmosphere, (NH 4 ) 2 MoS 4 Heating at 850°C for 6 hours, cooling, and ball milling in high-speed ball milling for 80 hours, the powder particles are in the range of 50-800nm, and the MoS 2 Powder, acetylene black powder, and PTFE (85:10:5) were mixed into a paste, coated on an aluminum mesh, pressed into a positive electrode sample with a diameter of 13 mm and a thickness of 1 mm under a pressure of 30 MPa, and stored in a vacuum desiccator.

[0036] Assembly of simulated battery

[0037] In addition to using MoS 2 Positive pole piece replaces MgCo 2 o 4 Except for the positive pole piece, others are exactly the same as in Example 1.

[0038] The opening voltage of the simulated battery is 1.4V, 0.1C charging and discharging, and the charging voltage is stable at 2.8V. The simulated battery can be reversibly charged and discharged, and ...

Embodiment 3

[0040] Mix Mg powder, metal copper powder and nickel powder in a molar ratio of 1:0.01:0.005, ball mill for 6 hours in an argon atmosphere, heat at 560°C for 4 hours in an argon atmosphere, cool, and ball in a high-speed ball mill for 80 hours , the powder size is in the range of 80-800nm, the magnesium powder is soaked in 0.01M magnesium fluoride for 3 minutes, the magnesium alloy powder, carbonyl nickel powder and PTFE (85:10:5) are adjusted into a paste, and coated on the copper On the net, under a pressure of 30MPa, press it into an electrode sheet with a diameter of 13mm and a thickness of 1m, and store it in a vacuum desiccator.

[0041] The production of the positive electrode sheet is the same as in Example 1.

[0042] The fabrication of the simulated battery is the same as in Example 1.

[0043] The opening voltage of the simulated battery is 2.0 volts, and it is charged and discharged at 0.1C. The average charging voltage is about 2.85 volts, and the discharging vol...

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
particle sizeaaaaaaaaaa
sizeaaaaaaaaaa
Login to view more

Abstract

This invention relates to the manufacture of secondary batteries charged by Mg including electrode materials, electrolytic material and their preparation method in which the negative is made of Mg alloy with component of MgMxMy(o<x, y<0.5) alloy above binary (M is Ni, Cu, Ti, Co, Si, B etc.), the positive is made of nanometer degree M2Co2O4(O<z<2, O<t<3) or MoS2 and the liquid electrolyte is metal organic compound Mg(ZnBuCl2)2. The said battery system has balance of charge / discharge with open voltage of about 2.0 V.

Description

Technical field [0001] The invention relates to the manufacture of secondary batteries, especially rechargeable magnesium batteries, including electrode materials for rechargeable magnesium batteries, electrolyte materials and their preparation methods. Background technique [0002] Rechargeable magnesium battery is a new type of rechargeable battery developed from lithium battery. Magnesium and lithium are in the diagonal position in the periodic table, so they have similar physical and chemical properties, such as relatively negative electronegativity, similar atomic radius and ionic radius. These properties constitute the basic conditions for rechargeable magnesium batteries. In addition, magnesium is cheap (about 1 / 24 of lithium), has poor activity compared to lithium, is stable in the air, is not easy to catch fire, and has good safety. These characteristics It also opens up a broad space for the practical application of rechargeable magnesium batteries. [0003] 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
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/46H01M10/38
CPCY02E60/12H01M10/38H01M4/483H01M4/46Y02E60/10Y02P70/50
Inventor 袁华堂曹建胜王永梅焦丽芳武绪丽刘秀生
Owner NANKAI UNIV
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