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A kind of lithium battery flexible negative electrode material and preparation method for wearable electronic equipment

A technology for negative electrode materials and electronic equipment, applied in the field of flexible negative electrode materials and preparations for lithium batteries for wearable electronic devices, can solve the problems of metal current collector fracture, low battery energy density, and complex processing technology, and achieve small diffusion distance and prevent Capacitance attenuation and good electrical performance

Active Publication Date: 2021-04-06
SHENZHEN IVPS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the electrode prepared by this method, the mass of the active material accounts for less than 20% of the total mass of the negative electrode, the energy density of the battery is low, and the processing technology is complicated, and the preparation cost is high. After being folded, it will break, causing the active material to fall off from the current collector, causing the battery to fail and pose a safety hazard

Method used

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  • A kind of lithium battery flexible negative electrode material and preparation method for wearable electronic equipment
  • A kind of lithium battery flexible negative electrode material and preparation method for wearable electronic equipment

Examples

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Effect test

Embodiment 1

[0030] (1) Put 95 parts by weight of hydrogen peroxide solution with a mass concentration of 20% in an ice bath, add 5 parts by weight of metal molybdenum powder under stirring, place it at room temperature after the reaction is completed, and continue stirring for 4 hours to remove the remaining hydrogen peroxide. get MoO 3 ·H 2 O and MoO 3 2H 2 The sol of O is then transferred to an autoclave and heated for hydrothermal reaction, then naturally cooled to room temperature, suction filtered, washed, and vacuum-dried to obtain molybdenum trioxide nanowires; wherein: the temperature of the hydrothermal reaction is 180 ° C, the pressure The temperature is 2MPa, and the time is 4h; the temperature of vacuum drying is 80°C, and the time is 8h;

[0031] (2) Add 18 parts by weight of manganese sulfate and 10 parts by weight of molybdenum trioxide nanowires into 71.5 parts by weight of deionized water, then add 0.5 parts by weight of potassium permanganate as an oxidant, transfer t...

Embodiment 2

[0035] (1) Put 90 parts by weight of hydrogen peroxide solution with a mass concentration of 20% in an ice bath, add 10 parts by weight of metal molybdenum powder under stirring, place it at room temperature after the reaction is completed, and continue stirring for 4 hours to remove the remaining hydrogen peroxide. get MoO 3 ·H 2 O and MoO 3 2H 2The sol of O is then transferred to an autoclave and heated for hydrothermal reaction, then naturally cooled to room temperature, suction filtered, washed, and vacuum-dried to obtain molybdenum trioxide nanowires; wherein: the temperature of the hydrothermal reaction is 200 ° C, the pressure The temperature is 3MPa, and the time is 3h; the temperature of vacuum drying is 90°C, and the time is 4h;

[0036] (2) Add 17 parts by weight of manganese sulfate and 18 parts by weight of molybdenum trioxide nanowires into 64.8 parts by weight of deionized water, then add 0.2 parts by weight of potassium permanganate as an oxidant, transfer t...

Embodiment 3

[0040] (1) Put 92 parts by weight of hydrogen peroxide solution with a mass concentration of 20% in an ice bath, add 8 parts by weight of metal molybdenum powder under stirring, place it at room temperature after the reaction is completed, and continue stirring for 5 hours to remove the remaining hydrogen peroxide. get MoO 3 ·H 2 O and MoO 3 2H 2 The sol of O is then transferred to an autoclave and heated for hydrothermal reaction, then naturally cooled to room temperature, suction filtered, washed, and vacuum-dried to obtain molybdenum trioxide nanowires; wherein: the temperature of the hydrothermal reaction is 190 ° C, the pressure The temperature is 2.2MPa, and the time is 3.5h; the temperature of vacuum drying is 85°C, and the time is 6h;

[0041] (2) Add 16 parts by weight of manganese sulfate and 15 parts by weight of molybdenum trioxide nanowires into 68.5 parts by weight of deionized water, then add 0.5 parts by weight of potassium permanganate as an oxidant, transf...

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Abstract

The invention relates to the technical field of flexible electrode materials, and provides a flexible negative electrode material for lithium batteries used in wearable electronic devices and a preparation method thereof. The flexible negative electrode material is prepared by first preparing manganese dioxide composite molybdenum trioxide nanowires, then preparing 3-hexyl substituted polythiophene spinning solution containing manganese dioxide composite molybdenum trioxide, and then electrospinning. The flexible negative electrode material has good electrical conductivity and electric cycle performance, and the conductivity and cycle performance are not significantly reduced after repeated bending, and is suitable for use in wearable electronic devices.

Description

technical field [0001] The invention belongs to the technical field of flexible electrode materials, and provides a lithium battery flexible negative electrode material for wearable electronic equipment and a preparation method thereof. Background technique [0002] With the rapid development of portable flexible electronic devices and the popularization and application of flexible electronic devices, people's lifestyles have changed. Flexible electronic devices require bending, folding and compression without affecting the normal use of the device. Therefore, as a driving device for flexible electronic devices, flexible energy storage devices also require normal power supply under bending, folding, and compression, in order to be well matched with other flexible devices. [0003] The development of rollable mobile devices, flexible smart cards, wireless sensors, wearable electronic devices and devices requires the development of flexible lithium-ion batteries to meet the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/50H01M4/62H01M4/66H01M4/131H01M4/1391H01M10/0525B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/131H01M4/1391H01M4/362H01M4/502H01M4/62H01M4/628H01M4/66H01M10/0525H01M2220/30Y02E60/10
Inventor 蔡杰
Owner SHENZHEN IVPS TECH
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