Flexible and foldable all-solid-state battery and manufacturing method thereof

An all-solid-state battery and all-solid-state technology, which is applied in the direction of sustainable manufacturing/processing, secondary batteries, solid electrolytes, etc., can solve the problems of incapable of large-scale manufacturing, brittleness, and high hardness of solid-state batteries, and achieve high safety and expansion Application Range, Effect of High Energy Density

Active Publication Date: 2019-04-12
宇恒电池股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of high hardness, brittleness, and inability to manufacture large-scale solid-state batteries in the prior art, and provides a flexible and foldable all-solid-state battery with controllable output voltage and capacity.

Method used

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  • Flexible and foldable all-solid-state battery and manufacturing method thereof
  • Flexible and foldable all-solid-state battery and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0038] A method for manufacturing a flexible and foldable all-solid-state battery, the method comprising the following steps:

[0039] S1, preparation of positive and negative electrode material mixture

[0040] In a glove box filled with argon, weigh 5 mg of the cathode material mixture, 30 mg of Li 6 P.S. 5 Cl solid electrolyte and 5mg negative electrode material mixture, spare;

[0041] Lithium iron phosphate powder, Li 6 P.S. 5 Cl and acetylene black are mixed uniformly by mass ratio 1:1:(1 / 2) to obtain positive electrode material mixture;

[0042] Graphite powder and Li 6 P.S. 5 Cl was mixed uniformly at a mass ratio of 1:1 to obtain a negative electrode material mixture.

[0043] S2. Manufacture of miniature all-solid-state batteries

[0044] According to aluminum foil, cathode material mixture, Li 6 P.S. 5 The sequence of Cl solid electrolyte, negative electrode material mixture, and copper foil was uniformly put into a square mold of 8 mm × 8 mm in sequence, ...

Embodiment 2

[0049] A method for manufacturing a flexible and foldable all-solid-state battery, the method comprising the following steps:

[0050] S1, preparation of positive and negative electrode material mixture

[0051] In a glove box filled with argon, weigh 10 mg of cathode material mixture, 20 mg of Li 6 P.S. 5 Br solid electrolyte and 10mg negative electrode material mixture, spare;

[0052] Lithium cobalt oxide powder, Li 6 P.S. 5Br and carbon nanotubes are uniformly mixed in a mass ratio of 1:(3 / 5):(2 / 5) to obtain a positive electrode material mixture;

[0053] Graphite powder and Li 6 P.S. 5 Br was uniformly mixed at a mass ratio of 1:(2 / 3) to obtain a negative electrode material mixture.

[0054] S2. Manufacture of miniature all-solid-state batteries

[0055] According to aluminum foil, cathode material mixture, Li 6 P.S. 5 The sequence of Br solid electrolyte, negative electrode material mixture, and copper foil was uniformly put into a 6mm×6mm square mold in turn, ...

Embodiment 3

[0060] A method for manufacturing a flexible and foldable all-solid-state battery, the method comprising the following steps:

[0061] S1, preparation of positive and negative electrode material mixture

[0062] In a glove box filled with argon, weigh 5 mg of the cathode material mixture, 30 mg of Li 6 PS- 5 Br solid electrolyte and 5mg negative electrode material mixture, spare;

[0063] Lithium manganese oxide powder, Li 3 P.S. 4 Mix with acetylene black in mass ratio 1:(1 / 3):(1 / 3) to obtain positive electrode material mixture;

[0064] Graphite powder and Li 3 P.S. 4 According to the mass ratio of 1:(1 / 2), mix uniformly to obtain the negative electrode material mixture.

[0065] S2. Manufacture of miniature all-solid-state batteries

[0066] According to aluminum foil, cathode material mixture, Li 3 P.S. 4 The sequence of solid electrolyte, negative electrode material mixture, and copper foil was evenly put into a 13mm×15mm square mold in turn, kept under 300MPa p...

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Abstract

The invention relates to a battery and a manufacturing method thereof, in particular to a flexible and foldable all-solid-state battery and a manufacturing method thereof. The battery is obtained by connecting two miniature all-solid-state battery cells in series or in parallel and then performing vacuum sealing with a flexible insulation plastic package film, or is obtained by connecting more than three miniature all-solid-state battery cells in series or in parallel and then performing vacuum sealing with the flexible insulation plastic package film, and each miniature all-solid-state battery cell sequentially comprises a positive current collector, a positive electrode, a solid electrolyte, a negative electrode and a negative current collector. The manufacturing method of the battery comprises the steps of weighing, manufacturing of the miniature all-solid-state battery cell and manufacturing of a flexible all-solid-state battery. The solid-state battery has the characteristics of flexibility, foldability, high energy density, high safety and the like, and a large-size solid-state battery also can be manufactured; and by series / parallel design, the output voltage and the capacity of the all-solid-state battery can be arbitrarily controlled, large-rate discharging can be achieved, and the application of the all-solid-state battery in the field of a large-rate discharging power battery is expanded.

Description

technical field [0001] The invention relates to a battery and a manufacturing method thereof, in particular to a flexible and foldable all-solid-state battery and a manufacturing method thereof. Background technique [0002] At present, commercial lithium-ion batteries generally use liquid electrolytes, and their low ignition point, low flash point and leakage problems have brought great safety hazards. Compared with liquid electrolytes, all-solid electrolytes reduce the risks of liquid leakage and fire during charging and discharging. However, the brittleness and high hardness of solid-state electrolytes hinder their application in the field of flexible and foldable batteries. At present, flexible all-solid-state batteries are mainly focused on all-solid-state thin-film batteries. All-solid-state thin-film batteries are made by depositing current collector films, solid electrolyte films, electrode films, etc. on certain substrates (such as glass, ceramics, single crystal ...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M10/0585H01M10/0562
CPCH01M10/0525H01M10/0562H01M10/0585H01M2300/0068Y02E60/10Y02P70/50
Inventor 夏阳方如意张文魁张俊梁初黄辉甘永平贺馨平
Owner 宇恒电池股份有限公司
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