Lithium secondary cell and nonaqueous electrolytic solution for use therein

A non-aqueous electrolyte and secondary battery technology, applied in the direction of secondary batteries, non-aqueous electrolyte, non-aqueous electrolyte battery, etc., can solve the problem of not being able to obtain output

Inactive Publication Date: 2017-08-18
MITSUBISHI CHEM CORP +1
View PDF51 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sufficient output cannot be obtained yet, and further improvement is required

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
  • Lithium secondary cell and nonaqueous electrolytic solution for use therein
  • Lithium secondary cell and nonaqueous electrolytic solution for use therein
  • Lithium secondary cell and nonaqueous electrolytic solution for use therein

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0797] The method for preparing the above-mentioned amorphous carbonaceous material is not particularly limited as long as it does not exceed the scope of the gist of the present invention, and various methods can be cited. In the production of amorphous carbonaceous material, it is necessary to go through a heat treatment step. However, the heat treatment may be divided into two or more times. It is also preferable to perform various treatments before and after the heat treatment and / or the middle stage of the heat treatment. The various treatments include pulverization, classification, the above-mentioned cross-linking treatment, and the like. The pulverization and classification treatments may be performed before, after, or intermediate stages of the heat treatment as long as they are in a solid state. The crosslinking treatment is preferably carried out before or in the middle of the heat treatment. By performing these treatments, the specific surface area of ​​the negative...

Embodiment

[1992] Hereinafter, examples and comparative examples are given to explain the present invention more specifically, but the present invention is not limited to these examples as long as it does not exceed the gist of the present invention.

[1993] Positive electrode[1][positive electrode active material]

[1994] The types and physical properties of positive electrode active materials used in the following Examples and Comparative Examples are as follows.

[1995] Positive electrode [1] Table 1

[1996] [Table 1]

[1997]

[1998] Positive electrode [1] In Table 1, as the physical properties of the positive electrode active material, the BET specific surface area, average primary particle size (measured by SEM), and median particle size d were measured according to the method described above. 50 , Measurement of tap density.

[1999] [Positive Active Material A]

[2000] The positive active material A is a lithium transition metal composite oxide synthesized by the method shown below, wi...

Embodiment 2

[2028] Except that the electrolytic solution contained 0.3% by mass of trimethylsilyl methanesulfonate instead of hexamethylcyclotrisiloxane, the same procedure was carried out as in Example 1 of the positive electrode [1]. The results of battery evaluation are shown in Table 2 of the positive electrode [1].

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
face spacingaaaaaaaaaa
face spacingaaaaaaaaaa
densityaaaaaaaaaa
Login to view more

Abstract

A lithium secondary cell which comprises a positive electrode and a negative electrode which have a specific composition and specific properties and a nonaqueous electrolytic solution containing a cyclic siloxane compound represented by the formula (1), a fluorosilane compound represented by the formula (2), a compound represented by the formula (3), a compound having an S-F bond, a nitric acid salt, a nitrous acid salt, a monofluorophosphoric acid salt, a difluorophosphoric acid salt, an acetic acid salt, or a propionic acid salt in an amount of at least 10 ppm of the whole nonaqueous electrolytic solution. The lithium secondary cell has a high capacity, long life, and high output. In the general formula (1), R<1> and R<2> each is a C1-12 organic group; and n is an integer of 3-10. In the general formula (2), R<3> to R<5> each is a C1-12 organic group; x is an integer of 1-3; and p, q, and r each is an integer of 0-3, provided that 1=p+q+r=3. In the general formula (3), R<6> to R<8> each is a C1-12 organic group; and A is a group constituted of H, C, N, O, F, S, Si, and / or P.

Description

[0001] This application is a divisional application of the application date of October 19, 2006, the application number is 201410514981.1, and the invention title is "lithium secondary battery and non-aqueous electrolyte used therein". Technical field [0002] The present invention relates to a lithium secondary battery and a non-aqueous electrolyte used therein. More specifically, it relates to a non-aqueous electrolyte for a lithium secondary battery with a specific composition and a specific composition and physical properties that can occlude and release lithium Lithium secondary batteries with excellent low-temperature discharge characteristics, high capacity, long life, and high output, and non-aqueous electrolytes used therein. Background technique [0003] In recent years, with the miniaturization of electronic devices, the demand for higher capacity of secondary batteries has been increasing, and lithium secondary batteries having higher energy density than nickel-cadmium ...

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 Applications(China)
IPC IPC(8): H01M10/0567H01M10/0569H01M10/0525H01M4/02H01M4/131H01M4/133H01M4/134H01M4/36H01M4/587H01M10/0568H01M10/0587H01M4/485H01M4/505H01M4/525H01M10/052H01M50/102H01M50/46
CPCH01M10/0525H01M10/0567H01M10/0569H01M4/131H01M4/134H01M4/133H01M4/364H01M4/587H01M10/0568H01M10/0587H01M2004/021H01M2300/0025H01M2300/004H01M2220/20Y02E60/10Y02P70/50
Inventor 宫城秀和加藤竜一横沟正和宇尾野宏之松本一志佐藤智洋古田土稔中岛孝之铃木仁大岛裕之
Owner MITSUBISHI CHEM CORP
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