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Flexible battery and preparation method thereof

A flexible battery and flexible technology, applied to the electrodes of primary batteries, hybrid batteries, battery electrodes, etc., can solve the problems of poor safety and stability, low specific capacity of flexible air batteries, etc., achieve high stability, increase specific capacity, and reduce interface The effect of resistance

Active Publication Date: 2019-12-03
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above deficiencies in the prior art, the object of the present invention is to provide a flexible air battery and its preparation method, aiming to solve the problems of low specific capacity and poor safety and stability of the flexible air battery in the prior art

Method used

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  • Flexible battery and preparation method thereof
  • Flexible battery and preparation method thereof
  • Flexible battery and preparation method thereof

Examples

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Embodiment 1

[0060] Preparation of gel electrolyte: activator 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) were used to react with sodium alginate The carboxyl group is activated, and the activated sodium alginate reacts with p-hydroxybenzylamine at room temperature and acidic conditions with a pH of 6.5 to prepare modified sodium alginate. Figure 4 is the change diagram of the ultraviolet absorption peak before and after the modification of sodium alginate, and the reaction equation of the modification process is Then, mix the modified sodium alginate and chitin at a molar ratio of 1:5, stir evenly, add a photocatalyst, illuminate under visible light, and form a double-network gel electrolyte through cross-linking, and the double-network The SEM image of the gel electrolyte is shown in Figure 5 Shown; The EDS element distribution figure of described double network gel electrolyte is as Figure 6 shown.

[0061] Preparation of flexi...

Embodiment 2

[0065] Preparation of gel electrolyte: 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC·HCL) and N-hydroxysuccinimide (NHS) The carboxyl group of sodium is activated, and the activated sodium alginate reacts with p-hydroxybenzylamine at room temperature and acidic conditions with a pH of 6.5 to prepare modified sodium alginate. The reaction equation is Then, mix the modified sodium alginate and sodium polyacrylate at a molar ratio of 1:5, stir evenly, add a photocatalyst, illuminate under visible light, and form a double network gel electrolyte through crosslinking. The SEM image of the network gel electrolyte is as follows Figure 7 As shown, the EDS element distribution diagram of the double network gel electrolyte is as follows Figure 8 As shown, the stretching diagram of the double network gel electrolyte is as follows Figure 9 shown.

[0066] Preparation of flexible porous air electrode: The method of preparing modified sodium alginate is the same as...

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Abstract

The invention discloses a flexible battery and a preparation method thereof. The method comprises the steps of: under an illumination condition, mixing and reacting a modified polymer material, a non-modified polymer material and a photocatalyst to prepare a dual-network gel electrolyte; uniformly doping a porous carbon-based material into the dual-network gel electrolyte and carrying out freeze drying treatment to prepare a flexible porous air electrode; uniformly doping metal powder or metal wires into the dual-network gel electrolyte and carrying out curing treatment to prepare a flexible thin-film metal electrode; stacking the flexible porous air electrode, the dual-network gel electrolyte and the flexible thin-film metal electrode in sequence, and performing pressing treatment to obtain the flexible battery. The flexible porous air electrode and the flexible thin-film metal electrode are both prepared by taking the dual-network gel electrolyte as a base material, and the dual-network gel electrolyte and the electrodes are prepared by adopting a homogeneous in-phase material, so that the safety stability and the specific capacity of the flexible battery can be effectively improved.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a flexible battery and a preparation method thereof. Background technique [0002] Flexible devices provide many conveniences for modern life and have attracted extensive attention from researchers because of their portability, bendability, and wearability. [0003] At present, the main factors restricting flexible batteries focus on the safety of flexible batteries, the improvement of energy density, the extension of battery life, and the stability of long-term operation. Traditional flexible electrode materials mostly use light and thin electronic conductors such as carbon cloth and porous metal as flexible air electrode substrates or directly as flexible electrodes. However, because the electrolyte and electrodes in flexible batteries are not homogeneous materials, these restrict the conduction of active catalytic substances, ions and electrons. After long-term work, deformation will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/08H01M4/88H01M4/06H01M4/96H01M12/06
CPCH01M12/065H01M4/96H01M4/8882H01M4/8878H01M4/06H01M4/08H01M2300/0085Y02P70/50
Inventor 符显珠康晓民司凤占符国栋骆静利
Owner SHENZHEN UNIV
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