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Capacitor battery and preparation method thereof

A capacitor battery and electrode slurry technology, which is applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, non-aqueous electrolyte battery electrodes, etc. The density is uniform and the effect of volume change is satisfied

Inactive Publication Date: 2019-08-23
NINGBO CRRC NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this change still cannot take into account the high power characteristics and high energy characteristics of the battery

Method used

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  • Capacitor battery and preparation method thereof
  • Capacitor battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The positive porous carbon electrode slurry is made of carbon airgel, PTFE and carbon nanotubes in a ratio of 90:5:5, and the positive electrode lithium metal salt electrode slurry is made of lithium manganate, PVDF, and carbon black in a ratio of 89: 5:6 mixed, the negative electrode disordered carbon electrode slurry is made of carbon airgel, PTFE and carbon nanotubes in a ratio of 90:5:5, the negative electrode graphite slurry is made of graphite, SBR / CMC, graphite The ratio of ethylene is 90:6:4;

[0039] The positive electrode porous carbon electrode slurry and the metal lithium salt electrode slurry are coated on the aluminum foil in sequence. The thickness of the single-side coating of the porous carbon electrode slurry is 15 μm, and the thickness of the single-side coating of the metal lithium salt electrode slurry is 105 μm;

[0040] The negative electrode disordered carbon electrode slurry and graphite slurry are coated on the copper foil in sequence, the thic...

Embodiment 2

[0043] The positive porous carbon electrode slurry is made of activated carbon, SBR / CMC and Ketjen carbon in a ratio of 90:5:5, and the positive electrode lithium metal salt electrode slurry is made of lithium iron phosphate, SBR / CMC, and carbon black in a ratio of 88 :6:6 mixed, the negative electrode disordered carbon electrode slurry is made of activated carbon, SBR / CMC and Ketjen carbon in a ratio of 90:5:5, the negative electrode graphite slurry is made of hard carbon, SBR / CMC, The VCGF ratio is 90:5:5;

[0044] The positive porous carbon electrode slurry and the metal lithium salt electrode slurry are coated on the aluminum foil in sequence. The thickness of the single-side coating of the porous carbon electrode slurry is 17 μm, and the thickness of the single-side coating of the metal lithium salt electrode slurry is 103 μm;

[0045]The negative disordered carbon electrode slurry and the graphite slurry are coated on the copper foil in sequence, the thickness of the sin...

Embodiment 3

[0048] The positive porous carbon electrode slurry is made of mesoporous carbon, PTFE and carbon black in a ratio of 90:5:5, and the positive metal lithium salt electrode slurry is made of LiMnPO 4 , PVDF, and carbon black in a ratio of 89:5:6, the negative electrode disordered carbon electrode slurry is made of mesoporous carbon, PTFE, and carbon black in a ratio of 90:5:5, and the negative electrode graphite slurry is made of Soft carbon, SBR / CMC, and graphene are mixed at a ratio of 90:6:4;

[0049] The positive porous carbon electrode slurry and the metal lithium salt electrode slurry are coated on the aluminum foil in sequence, the thickness of the single-side coating of the porous carbon electrode slurry is 20 μm, and the thickness of the single-side coating of the metal lithium salt electrode slurry is 100 μm;

[0050] The negative electrode disordered carbon electrode slurry and graphite slurry are coated on the copper foil in sequence, the thickness of the single-side...

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Abstract

The invention relates to a capacitor battery and a preparation method thereof, and belongs to the technical field of batteries. The capacitor battery comprises a positive electrode and a negative electrode which are composed of two types of electrode materials. The positive electrode comprises porous carbon electrode slurry and metal lithium salt electrode slurry which are sequentially coated on the surface of a current collector; and the negative electrode comprises disordered carbon electrode slurry and graphite slurry which are sequentially coated on the surface of the current collector. The capacitor battery is formed through simple slurry coating and assembling. The positive electrode and the negative electrode are respectively coated on the current collector through two materials, sothat the unification of the power density and the energy density is realized.

Description

technical field [0001] The invention relates to a capacitor battery and a preparation method thereof, belonging to the technical field of batteries. Background technique [0002] Traditional supercapacitors mainly use the principle of electric double layer adsorption for energy storage, and it is difficult to break through the defect of low energy density. At the same time, battery electrodes that store energy in a fast oxidation-reduction manner can well make up for the lack of performance of capacitors. The "internal series connection" between the two can well combine the high power characteristics of supercapacitors and the high performance of lithium-ion batteries. Advantages of energy properties. [0003] Due to the limitations of the life and safety of commercial lithium-ion batteries and the specific energy of commercial electric double layer capacitors, the application of the two in public transportation vehicles as the main power source is severely restricted. Lit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M4/13H01M4/133H01M4/139H01M4/1393H01M10/058
CPCH01M4/13H01M4/133H01M4/139H01M4/1393H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 阮殿波袁峻乔志军
Owner NINGBO CRRC NEW ENERGY TECH CO LTD
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