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Lithium ion capacitor battery and preparation method thereof

A capacitor battery and lithium ion technology, applied in the field of lithium ion capacitor battery and its preparation, can solve the problem of poor cycle stability of electrode materials, and achieve the effects of enhancing electrochemical activity, increasing penetration rate, and reducing application difficulty

Active Publication Date: 2021-09-28
PENGSHENG GUONENG (SHENGZHEN) NEW ENERGY GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a lithium-ion capacitor battery and its preparation method, to solve the technical problem of poor cycle stability of traditional electrode materials

Method used

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Embodiment 1

[0032] A preparation method for a lithium-ion capacitor battery, comprising the steps of:

[0033] (1) Preparation of anode: 80g LiCoO 2 , 10g of binder PVDF and 10g of conductive agent tantalum were added to 300mL of N-methyl-2-pyrrolidone and dispersed evenly to obtain an anode slurry, which was then coated on a 15μm thick aluminum foil, dried and rolled to form an anode ;

[0034] (2) Preparation of cathode: 90g nitrogen-doped porous carbon supported MoS 2 Nanoflowers and 10g of binder PVDF were added to 300mL of N-methyl-2-pyrrolidone and dispersed evenly to obtain a cathode slurry, which was then coated on a 12 μm thick copper foil, dried and rolled to form a cathode; where Nitrogen-doped porous carbon supported MoS 2 The preparation steps of nanoflowers are as follows:

[0035] Add 45g of 3,3'-diaminobenzidine into 300mL of tetrahydrofuran solvent, stir evenly, then add 100g of 1,2,4,5-tetrakis(4'-formylphenyl)benzene, and perform pre-reaction at 30°C 8h, then carry...

Embodiment 2

[0041] A preparation method for a lithium-ion capacitor battery, comprising the steps of:

[0042] (1) Preparation of anode: 80g LiCoO 2 , 12g of binder PVDF and 6g of conductive agent tantalum were added to 300mL of N-methyl-2-pyrrolidone and dispersed evenly to obtain an anode slurry, which was then coated on a 15μm thick aluminum foil, dried and rolled to form an anode ;

[0043] (2) Preparation of cathode: 90g nitrogen-doped porous carbon supported MoS 2 Nanoflowers and 12g of binder PVDF were added to 300mL of N-methyl-2-pyrrolidone and dispersed uniformly to obtain a cathode slurry, which was then coated on a 12 μm thick copper foil, dried and rolled to form a cathode; where Nitrogen-doped porous carbon supported MoS 2 The preparation steps of nanoflowers are as follows:

[0044] Add 54g of 3,3'-diaminobenzidine into 300mL of tetrahydrofuran solvent, stir evenly, then add 100g of 1,2,4,5-tetrakis(4'-formylphenyl)benzene, and perform pre-reaction at 30°C 10h, and the...

Embodiment 3

[0050] A preparation method for a lithium-ion capacitor battery, comprising the steps of:

[0051] (1) Preparation of anode: 80g LiCoO 2 , 12g of binder PVDF and 8g of conductive agent tantalum were added to 300mL of N-methyl-2-pyrrolidone and dispersed evenly to obtain an anode slurry, which was then coated on a 15μm thick aluminum foil, dried and rolled to form an anode ;

[0052] (2) Preparation of cathode: 90g nitrogen-doped porous carbon supported MoS 2 Nanoflowers and 13g of binder PVDF were added to 300mL of N-methyl-2-pyrrolidone and dispersed uniformly to obtain a cathode slurry, which was then coated on a 12 μm thick copper foil, dried and rolled to form a cathode; where Nitrogen-doped porous carbon supported MoS 2 The preparation steps of nanoflowers are as follows:

[0053] Add 62g of 3,3'-diaminobenzidine into 300mL of tetrahydrofuran solvent, stir evenly, then add 100g of 1,2,4,5-tetrakis(4'-formylphenyl)benzene, and perform pre-reaction at 30°C 10h, and the...

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Abstract

The invention discloses a lithium ion capacitor battery and a preparation method thereof. The preparation method comprises the four steps of preparing an anode, preparing a cathode, preparing electrolyte and preparing the lithium ion capacitor battery. synthesized flower-shaped nano molybdenum disulfide is large in specific surface area, so that more electrochemical active sites can be generated on the surface of the flower-shaped nano molybdenum disulfide, meanwhile, the reaction contact area between the flower-shaped nano molybdenum disulfide and electrolyte can be increased, the reaction process is accelerated, and therefore the specific capacity and electrochemical activity of a nano molybdenum disulfide-based electrode material are effectively improved; a nitrogen-doped porous carbon material has rich pore structures, the molybdenum disulfide nanoflowers can grow in the pore structures in situ, so that the accumulation and agglomeration phenomena of the molybdenum disulfide nanoflowers can be slowed down to a certain extent, and meanwhile, the problem of volume expansion of the molybdenum disulfide in the continuous intercalation and deintercalation process of Li < + > can be avoided, so that the cycling stability and the rate capability of the nano molybdenum disulfide-based electrode material are effectively improved.

Description

technical field [0001] The invention relates to the technical field of capacitor batteries, in particular to a lithium-ion capacitor battery and a preparation method thereof. Background technique [0002] Lithium-ion capacitor battery, also known as lithium-ion capacitor or lithium-ion hybrid supercapacitor, is usually assembled from battery-type materials (negative electrode) and capacitive material (positive electrode) in an electrolyte containing lithium salt. Lithium-ion capacitor batteries are also With the advantages of lithium-ion batteries and supercapacitors, it has become a promising new energy storage system with its advantages of high energy density, high power density, long cycle life and fast charge and discharge. However, the power between battery-type electrodes and capacitive electrodes Key problems such as chemical imbalance, less ideal energy density and poor cycle stability still exist. To effectively solve this problem, it is necessary to develop new pos...

Claims

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Application Information

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IPC IPC(8): H01G11/50H01G11/48H01G11/86
CPCH01G11/50H01G11/48H01G11/86Y02E60/13
Inventor 朱少敏刘春燕
Owner PENGSHENG GUONENG (SHENGZHEN) NEW ENERGY GRP CO LTD
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