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

Non-aqueous electrolyte secondary battery

A non-aqueous electrolyte and secondary battery technology, applied in the direction of non-aqueous electrolyte batteries, non-aqueous electrolyte, secondary batteries, etc., can solve the problem of film formation that hinders high-current discharge, and achieve the effect of improving discharge performance

Active Publication Date: 2015-06-03
PANASONIC ENERGY CO LTD MORIGUCHI SHI
View PDF11 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the positive electrode active material contains a catalytic transition metal, a decomposition reaction of the electrolyte occurs, etc., and there is a problem that a film that inhibits high-current discharge is formed on the surface of the positive electrode active material.

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
  • Non-aqueous electrolyte secondary battery
  • Non-aqueous electrolyte secondary battery
  • Non-aqueous electrolyte secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] Hereinafter, one embodiment of the present invention will be described in more detail based on specific examples. However, the present invention is not limited by the following examples at all, and can be implemented with appropriate changes within a range that does not change the gist.

no. 1 example

[0055] (Example)

[0056] [Synthesis of positive electrode active material]

[0057] Will LiNi 0.55 co 0.20 mn 0.25 o 2 1000 g (10.34 mol) of the particles of nickel-cobalt-lithium-manganese oxide shown were thrown into 3 liters of pure water and stirred. Next, a solution in which 4.58 g (10.33 mmol) of erbium nitrate pentahydrate was dissolved was added thereto. At this time, a 10% by mass aqueous sodium hydroxide solution was appropriately added to adjust the pH of the solution containing nickel-cobalt-lithium-manganese-oxide to 9. Next, after suction filtration and water washing, heat treatment was performed at 400° C. for 5 hours in an air atmosphere to obtain lithium nickel cobalt manganate with erbium oxyhydroxide uniformly adhered to the surface. It should be noted that the amount of attached erbium oxyhydroxide is 0.1 mol % relative to the total molar amount of transition metals of the above-mentioned lithium nickel cobalt manganese oxide in terms of erbium eleme...

Embodiment 1

[0083] A battery was produced in the same manner as in the first example above except that lithium bisoxalate borate was dissolved at a concentration of 0.03 mol / liter in the electrolyte to produce a non-aqueous electrolyte. The thus fabricated battery is hereinafter referred to as battery B1.

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
Login to View More

Abstract

A non-aqueous electrolyte secondary battery provided with a non-aqueous electrolyte, an anode (2), and a cathode (1) containing a cathode active material, wherein the cathode active material contains a lithium-containing transition metal oxide to the surface of which a rare earth compound is adhered, and the non-aqueous electrolyte contains a lithium salt having as the anion an oxalate complex.

Description

technical field [0001] The present invention relates to a nonaqueous electrolyte secondary battery. Background technique [0002] Since non-aqueous electrolyte secondary batteries have high energy density and high capacity, they are widely used as driving power sources for mobile information terminals such as mobile phones and notebook computers. Recently, it has attracted a lot of attention as a power source for power tools, electric vehicles, and the like. Power supplies for power are required to increase the capacity to enable long-term use, and to improve the high-current discharge cycle characteristics that repeatedly discharge large currents in a relatively short period of time. [0003] Since the positive electrode active material contains a catalytic transition metal, there is a problem that a decomposition reaction of the electrolytic solution occurs and a film that inhibits large current discharge is formed on the surface of the positive electrode active material....

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): H01M10/0567H01M4/36H01M4/485H01M4/505H01M4/525H01M4/58H01M10/052
CPCH01M4/366H01M4/485H01M4/505H01M4/525H01M10/052H01M10/0568Y02E60/10H01M2300/0025Y02T10/70
Inventor 山本贵史杉森仁德滝尻学菅谷纯一竹内正信柳田胜功小笠原毅
Owner PANASONIC ENERGY CO LTD MORIGUCHI SHI