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

Nonaqueous electrolyte secondary cell

A non-aqueous electrolyte, secondary battery technology, applied in non-aqueous electrolyte batteries, non-aqueous electrolyte battery electrodes, secondary batteries, etc., can solve the problems of loss, insufficient inhibition of charge and discharge cycle characteristics, etc.

Inactive Publication Date: 2004-09-29
SONY CORP
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conversely, when the film formation is insufficient, the loss of charge and discharge cycle characteristics is not sufficiently suppressed

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
  • Nonaqueous electrolyte secondary cell
  • Nonaqueous electrolyte secondary cell
  • Nonaqueous electrolyte secondary cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] best practice

[0017] Now, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0018] like figure 1 As shown, a nonaqueous electrolyte secondary battery 1 employing the present invention has a battery element accommodated in a battery case 5 . This battery element is obtained by spirally winding an elongated cathode 2 and an elongated anode 3 through a separator 4 in a state of close contact.

[0019] The cathode 2 is prepared by coating and drying a cathode composite mixture containing a cathode active material and a binder on a current collector. Metal foil such as aluminum foil is used as a current collector.

[0020] As the cathode active material, for example, lithium composite oxides including lithium and metal elements, metal oxides such as V 2 o 5 , metal sulfides such as TiS 2 、MoS 2 , or polymeric materials such as polyacetylene or polypyrrole. One or two or more of them may be mixed together...

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 present invention relates to a non-aqueous electrolyte secondary battery in which a spirally coiled battery element obtained by spirally coiling an anode (3) and a cathode (2) through a separator (4) is accommodated in a battery can (5) filled with a non-aqueous electrolyte. A fluoride MFn (M indicates at least one metal selected from between Cu, Ni, Ag, Ti, Sn and Cr, and n is an integer.) is included in the anode before an initial charging operation, and assuming that the initial charging capacity of the battery is Q ÄmAhÜ and a Faraday constant is F ÄC / molÜ, an amount m ÄmolÜ of the fluoride MFn included in the anode is located within a range represented by the following expression. <DF>0.0036Q / nF ≤ m ≤ 0.36Q / nF < / DF>

Description

technical field [0001] The present invention relates to a nonaqueous electrolyte secondary battery, such as a lithium ion secondary battery, and more particularly, to a nonaqueous electrolyte secondary battery having high energy density and output density and excellent charge-discharge cycle characteristics. [0002] This application claims the priority of Japanese Patent Application No. 2002-027201 (filing date: February 4, 2002). This prior application is incorporated herein by reference. Background technique [0003] In recent years, various types of portable electronic devices and batteries for these electronic devices have been developed. For portable electronic devices, compactness and light weight are required. Batteries used for these devices are also required to be compact and lightweight. [0004] In electronic equipment including portable electronic equipment, batteries with a large degree of freedom in shape are required in order to make full use of space. As...

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): H01M10/05H01M4/13H01M4/36H01M4/62H01M10/04H01M10/052H01M10/058H01M10/44
CPCH01M2004/027H01M10/0431H01M4/582Y02E60/122H01M4/587H01M4/13H01M4/62H01M10/446H01M4/364Y02E60/10Y02P70/50H01M4/58H01M10/0525
Inventor 伊东秀俊成瀬义明山本鑑
Owner SONY CORP