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Bendable single substrate lithium-air battery series connection structure

An air battery, series structure technology, applied in the direction of structural parts, battery pack parts, circuits, etc., can solve the problems of metal lithium anode sensitivity, limiting energy density and safety performance, which cannot solve the requirements of internal air electrode diffusion, and achieves Achieve bendability and pressure resistance, increase energy density, and achieve flexible tandem structures

Active Publication Date: 2016-04-20
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this "sandwich structure" can be used to evaluate the overall performance of the battery, considering that the number of layers of this simple stack structure is further increased, it cannot solve the requirements of the internal air electrode for gas diffusion and the sensitivity of the metal lithium negative electrode to air. Energy Density and Safety Performance

Method used

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  • Bendable single substrate lithium-air battery series connection structure
  • Bendable single substrate lithium-air battery series connection structure

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, the flexible substrate is a polyethylene naphthalate film with a thickness of 200 microns, the conductive coating is a fluorine-doped tin oxide film with a thickness of 50 nanometers prepared by magnetron sputtering, and the surface is patterned by laser etching, and the metal lithium It is a common lithium strip for lithium batteries that is laminated on the surface of fluorine-doped tin oxide through a laminator. The insulating interlayer is a 2-5 micron zirconia porous film with a thickness of 2-5 microns prepared by the mask plate magnetron sputtering method. The air electrode is a commercial The carbonized carbon material KB600 and polytetrafluoroethylene are used as the active material and the binder of the air electrode prepared by rolling method, respectively, and the water-blocking and breathable membrane is made of 10-micron polyethylene terephthalate bonded to fluorine-doped tin oxide by hot-pressing sarin resin. Ethylene glycol for...

Embodiment 2

[0031] Such as figure 1 As shown, the flexible substrate is a metal-polymer composite film with a thickness of 500 microns polyethylene terephthalate-aluminized / polyethylene / reinforcing layer / polyethylene, and the conductive coating is prepared by vacuum thermal deposition combined with a mask plate The aluminum metal film with a thickness of 20 nanometers, the metal lithium is a lithium strip commonly used in lithium batteries that is laminated on the surface of metal aluminum by a laminator, and the insulating interlayer is silicon oxide with a thickness of 2-5 microns prepared by combining a mask plate magnetron sputtering method Porous film, the air electrode is cobaltous oxide nanowire and polyvinylidene fluoride prepared by hydrothermal synthesis method respectively as the active material and the air electrode prepared by the binder rolling method, and the water-blocking and breathable film is cured by ultraviolet light. 10 micron polyethylene naphthalate film bonded to ...

Embodiment 3

[0033] Such as figure 1 As shown, the flexible substrate is a metal titanium plate whose surface is oxidized to form a titanium oxide passivation layer, and the conductive coating is formed by vacuum thermal deposition of metal aluminum on the surface oxidation treatment titanium plate of the photoresist mask and then etching the photoresist A patterned aluminum metal film with a thickness of 20 nanometers. The metal lithium is a lithium strip commonly used in lithium batteries that is laminated on the surface of metal aluminum by a laminator. The insulating interlayer is a polypropylene film vacuum-evaporated with a mask plate. The air electrode is the surface Graphene and polytetrafluoroethylene loaded with cobaltous oxide particles in situ were used as the active material and the air electrode prepared by the binder rolling method, respectively, and the water-blocking and gas-permeable membrane was a thermally poured polydimethylsiloxane film. After the battery is packaged,...

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Abstract

The present invention discloses a single substrate lithium-air battery series connection structure, which adopts a flexible substrate as a bottom layer, wherein a patterned electric conduction coating, a metal lithium negative electrode, an insulating separation layer, an air electrode and a water barrier gas permeation film are respectively processed from bottom to top. According to the present invention, the single substrate lithium-air battery series connection structure is flexible and bendable structural, and can improve applicability and safety of battery assemblies; the preparation of the positive electrode material and the negative electrode material on the single substrate is achieved, the battery system mass is reduced, and the energy density is improved; and with the change of the electric conduction coating patterned parameter, the regulation on the output current and the output voltage of the series connection assembly is achieved.

Description

technical field [0001] The invention belongs to the field of chemical power sources, and in particular relates to a lithium-air battery structure. Background technique [0002] The progress of science and technology promotes the continuous upgrading of the manufacturing industry, and the supply, use and storage of energy serve as the foundation to support the upgrading of the entire industry. Fossil energy is increasingly depleted, ecological pollution is increasing, and the global climate is warming. How to use energy cleanly has become an unavoidable key issue for human society. Battery replacement of traditional fossil fuel-driven motor vehicles and other power equipment has become a hot spot of common concern in both academia and industry. After more than 20 years of development, the capacity density of lithium-ion batteries has gradually approached its theoretical limit. However, as a power battery to drive electric vehicles, the mileage is generally less than 100 mile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/24H01M50/529
CPCY02E60/10
Inventor 吴宝山张华民张益宁王倩
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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