Lithium-ion capacitor current collector foil and manufacturing method thereof
A manufacturing method and capacitor technology, which are applied in the manufacture of hybrid/electrical double-layer capacitors and current collectors of hybrid capacitors, can solve the problems of low bonding strength, easy corrosion and discoloration, and easy falling off of active materials, so as to prevent corrosion and discoloration, avoid The effect of peeling off and good bond strength
Active Publication Date: 2020-06-19
赣州市中金高能电池材料股份有限公司
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the surface roughness of the metal foil produced by the existing process is relatively low, that is, relatively smooth. When it is used to make a lithium-ion capacitor current collector, the bonding strength with the active material is relatively low, and the active material is easy to fall off. , It is also easy to corrode and change color during storage, transportation and use
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 Construction
[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following exemplary embodiments and descriptions are only used to explain the present invention, not as a limitation to the present invention, and, in the case of no conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other .
[0028] Such as figure 1 As shown, the embodiment of the present invention provides a lithium ion capacitor current collector foil manufacturing method, including the following steps:
[0029] Step S11, performing roughening treatment on the surface of the metal foil in a physical way to form a uniform roughened texture on the surface of the metal foil, the physical way being knurling treatment or wire drawing treatment;
[0030] Step S12, placing the roughened metal foil into a passivation solution for passivation trea...
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 |
|---|---|---|
| current density | aaaaa | aaaaa |
| porosity | aaaaa | aaaaa |
Login to View More
Abstract
The embodiment of the invention provides a lithium ion capacitor current collector and a manufacturing method thereof. The method comprises the following steps: roughening the surface of a metal foilby a physical mode to form rough textures on the surface of the metal foil, wherein the physical mode is knurling treatment or wiredrawing treatment; placing the roughened metal foil into a passivation solution for passivation treatment to form a passivated film layer on the surface of the metal foil; perforating the passivated metal foil to form a perforated foil. The embodiment of the inventionfurther provides a lithium ion capacitor current collector foil material manufactured by the method. According to the embodiment of the invention, the surface of the metal foil is roughened by the physical mode at first to form the rough textures, and then the metal foil is perforated, so that the obtained metal foil is more appropriate in surface roughness and higher in bonding strength with an active material and can effectively prevent the active material from falling off. The passivated film layer is formed on the surface of the metal foil through the passivation treatment, so that the metal foil can be effectively prevented from being corroded and discolored in a use process.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of lithium ion capacitor current collectors, in particular to a lithium ion capacitor current collector foil and a manufacturing method thereof. Background technique [0002] The current collector is one of the important components of the lithium-ion capacitor. The current collector not only carries the electrode active material, but also gathers the current generated by the electrode active material to form a larger current output and improve the charging / discharging efficiency of the lithium-ion capacitor. Commonly used current collector materials include metal conductor materials such as copper, aluminum, nickel, and stainless steel, semiconductor materials such as carbon, and composite materials. Among them, current collectors made of copper and aluminum are more widely used. [0003] Existing current collectors made of metal conductor materials are all processed from metal foil ma...
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 Patents(China)
IPC IPC(8): H01G11/86H01G11/70
CPCH01G11/70H01G11/86Y02E60/13
Inventor 刘东林胡昌军温明生魏虎鸣南春雷
Owner 赣州市中金高能电池材料股份有限公司