Electrolyte additive, electrolyte and application in magnesium metal secondary battery

An electrolyte additive and secondary battery technology, applied in secondary batteries, circuits, electrical components, etc., can solve problems such as hindering the penetration of Mg2+, limiting the optional range of magnesium electrolyte components, and uneven growth of magnesium metal. Achieve the effect of facilitating industrialization promotion and application, improving interface compatibility, and high production efficiency

Pending Publication Date: 2022-08-05
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, recently, Banerjee et al. and Pint et al. have reported the uneven growth behavior of magnesium metal during the electrodeposition process, proving that magnesium metal anodes also have potential safety hazards of dendrite growth (Mater.Horiz., 2020, 7(3 ):843-854; Joule, 2020, 4(6):1324-1336)
In addition, the early studies on the magnesium electrolyte system all believed that once a passivation layer is formed on the surface of the magnesium metal

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
  • Electrolyte additive, electrolyte and application in magnesium metal secondary battery
  • Electrolyte additive, electrolyte and application in magnesium metal secondary battery
  • Electrolyte additive, electrolyte and application in magnesium metal secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] Magnesium electrolyte, which comprises magnesium salt, organic solvent and electrolyte additive, wherein, the magnesium salt is magnesium bis-trifluoromethylsulfonimide and magnesium chloride, and the concentrations are respectively 0.25mol / L and 0.5mol / L; the solvent is ethyl acetate Glycol dimethyl ether; the electrolyte additive is bismuth trichloride, and the weight percentage in the electrolyte is 1%wt.

Example Embodiment

[0030] Example 2

[0031] Magnesium electrolyte, which comprises magnesium salt, organic solvent and electrolyte additive, wherein, the magnesium salt is magnesium bis-trifluoromethylsulfonimide and magnesium chloride, and the concentrations are respectively 0.25mol / L and 0.5mol / L; the solvent is ethyl acetate Glycol dimethyl ether; the electrolyte additive is tin tetrachloride, and the weight percentage in the electrolyte is 1%wt.

Example Embodiment

[0032] Example 3

[0033] Magnesium electrolyte, which comprises magnesium salt, organic solvent and electrolyte additive, wherein, the magnesium salt is magnesium bis-trifluoromethylsulfonimide and magnesium chloride, and the concentrations are respectively 0.25mol / L and 0.5mol / L; the solvent is ethyl acetate Glycol dimethyl ether; the electrolyte additive is aluminum trichloride, and the weight percentage in the electrolyte is 1%wt.

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
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of batteries, and particularly relates to a functional electrolyte additive containing inorganic chloride, an electrolyte and application of the functional electrolyte additive in a magnesium metal secondary battery. The electrolyte additive is one or more of inorganic chlorides AClx shown in the specification, A is an element in IIIA, IVA or VA main groups, and the value of x is between 2 and 4. According to the invention, an in-situ chemical reaction between one or more specific inorganic metal chlorides in the electrolyte and magnesium metal is utilized to form a compact and stable protective solid electrolyte interface film (SEI film) on the surface of the magnesium metal negative electrode, so that further reaction between an additive, magnesium salt and the magnesium metal negative electrode is slowed down; and the interface compatibility between the electrolyte and the magnesium metal negative electrode is improved, so that the cycle performance of the magnesium metal secondary battery is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a functional electrolyte additive containing inorganic chloride, an electrolyte and its application in a magnesium metal secondary battery. Background technique [0002] In the post-lithium-ion battery era, magnesium metal secondary batteries have gradually attracted the attention of the industry, academia and research circles due to their high volumetric energy density, low cost, high safety, green environmental protection and many other advantages. In the magnesium metal secondary battery system, the use of magnesium metal anode is particularly critical because of its high volumetric specific capacity (3833mAh / cm 3 ), abundant resources, low cost, high intrinsic security and many other advantages. It should be said that compared with other secondary battery systems, the magnesium metal anode is the core technical advantage of the magnesium metal secondary battery...

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): H01M10/0567H01M10/054
CPCH01M10/0567H01M10/054H01M2300/0025Y02E60/10
Inventor 崔光磊杜奥冰赵一民崔子立韩鹏献董杉木
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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