Composite particles for electrode use and producing method thereof, electrode and manufacturing method thereof and electrochemical device and producing method thereof
A technology of composite particles and particles, applied in electrode manufacturing, electrical components, electrochemical generators, etc.
Inactive Publication Date: 2005-09-28
TDK CORPARATION
View PDF3 Cites 9 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0013] In addition, in other types of primary batteries and secondary batteries of the above-mentioned lithium ion secondary batteries, there is a conventional general manufacturing method (wet method) as described above, that is, using at least an electrode active material and a conductive additive. In the case of electrodes manufactured by the method of coating liquid with binder, the same problems as above
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0213] (1) Preparation of composite particles
[0214] First, composite particles usable for forming an active material-containing layer of a cathode of a lithium ion secondary battery were produced by the method described above through the granulation step described below by the procedure shown below. Here, the composite particles P10 consist of a cathode electrode active material (24% by mass of large-diameter particles and 56% by mass of small-diameter particles), a conductive additive (8% by mass), and a binder (12% by mass).
[0215] As the electrode active material of the cathode, lithium manganese oxide (LiMn 2 o 4 ) composed of large diameter particles (average particle diameter R: 12μm, BET specific surface area: 0.5m 2 / g) and small-diameter particles made of lithium manganate (average particle size r: 0.4μm, BET specific surface area: 12m 2 / g). In addition, acetylene black was used as a conductive auxiliary agent. As the binder, polyvinylidene fluoride was use...
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
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
The electrode composite particles of this invention comprise an electrode active substance, an conductive auxiliary agent having electron conductivity, and a binder which binds the electrode active substance with the conductive auxiliary agent. The particles of electrode active substance contain large diameter particles and small diameter particles which simultaneously satisfy conditions expressed by the relations: <?in-line-formulae description="In-line Formulae" end="lead"?>1 mum<=R<=100 mum (1) <?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>0.01 mum<=r<=5 mum (2) <?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>( 1 / 10000)<=(r / R)<=(1 / 5) (3) <?in-line-formulae description="In-line Formulae" end="tail"?> R is the average particle diameter of the large diameter particles, and r is the average particle diameter of the small diameter particles.
Description
technical field [0001] The present invention relates to composite particles for electrodes that can be used as electrode constituent materials in electrochemical elements such as primary batteries, secondary batteries (especially lithium ion secondary batteries), electrolytic batteries, capacitors (especially electrochemical capacitors), and the use of the electrodes. An electrode formed of composite particles, and an electrochemical element including the electrode. In addition, the present invention relates to a method for producing the above-mentioned composite particle for an electrode, a method for producing the above-mentioned electrode, and a method for producing the above-mentioned electrochemical element. Background technique [0002] The development of portable devices in recent years has made significant progress. As the main driving force and power source of these devices, the development of high-energy batteries represented by lithium-ion secondary batteries, whi...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/00H01G4/005H01G9/00H01G9/04H01G9/042H01G11/22H01G11/24H01G11/26H01G11/28H01G11/30H01G11/38H01G11/86H01M4/00H01M4/13H01M4/139H01M4/36H01M4/62H01M6/00H01M10/00H01M10/05
CPCH01G9/042H01G11/24H01M4/02H01G11/42H01M4/0404H01M4/139H01M10/0525Y02E60/122Y02E60/13H01G11/38H01M4/624H01M4/13H01M2004/021H01M4/0419H01G9/058Y02E60/10
Inventor 铃木忠栗原雅人丸山哲
Owner TDK CORPARATION