Micro-nano integrated solid-state thin-film lithium battery and preparation method thereof

A technology for integrating solid-state and lithium batteries, which is applied in the manufacture of nano-batteries, lithium batteries, secondary batteries, etc., can solve the problems that are difficult to meet the needs of high voltage and high current driving electronic devices, and achieve the effect of meeting high voltage

Active Publication Date: 2021-04-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problem that the existing single micro-energy storage thin-film lithium battery is difficult to meet the need for high-voltage, high-current drive electronic devices, the present invention provides a micro-nano integrated solid-state thin-film lithium battery and its preparation method

Method used

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  • Micro-nano integrated solid-state thin-film lithium battery and preparation method thereof
  • Micro-nano integrated solid-state thin-film lithium battery and preparation method thereof
  • Micro-nano integrated solid-state thin-film lithium battery and preparation method thereof

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specific Embodiment approach

[0046] The present invention also provides a specific embodiment of preparing thin-film lithium battery micro-unit 12, comprising the following steps:

[0047] Step 1: Prepare a substrate 11 made of a PET film, wash the surface of the PET film with ethanol, dry it in vacuum at 80° C. for 2 hours, and set aside.

[0048] Step 2: Print two current collectors 14 made of copper by screen printing on the substrate 11 made of PET film. The specific screen printing copper paste has a solid content of 70-80% and a viscosity of 1000-5000mPa. s, bake at 100°C for more than 10 minutes, and the thickness is 0-500nm.

[0049] Step 3: On the current collector 14, the sputtering material is LiCoO by radio frequency magnetron sputtering deposition method 2 positive electrode film 15, specifically at 1°C min -1 Raise the temperature of the sample stage to 780°C at a high speed. After the temperature reaches 780°C and keep it warm for 10 minutes, argon and oxygen are introduced. The argon flo...

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Abstract

The invention provides a micro-nano integrated solid-state thin-film lithium battery and a preparation method thereof, which includes a substrate and a plurality of thin-film lithium battery micro-units formed on the substrate, the substrate is provided with conductive lines, and multiple The thin-film lithium battery micro-units are electrically connected to the conductive circuit, and the thin-film lithium battery micro-units include two independently arranged current collectors, a positive electrode film, a solid electrolyte film and a negative electrode film sequentially formed on the substrate, wherein , two current collectors are respectively electrically connected to the conductive circuit, wherein one current collector is in electrical contact with the positive electrode film, and the other current collector is in electrical contact with the negative electrode film, and the solid electrolyte film is arranged between the positive electrode film and the between the negative electrode films. The micro-nano thin-film solid-state lithium battery of the present invention can meet the use requirements of high voltage, high energy density and high power density.

Description

【Technical field】 [0001] The invention relates to the technical field of solid-state batteries, in particular to a micro-nano integrated solid-state thin-film lithium battery and a preparation method thereof. 【Background technique】 [0002] As the miniaturization and integration of electronic products has become the major trend of today's technological development, the batteries used in electronic products also need to be miniaturized. Micro-batteries have broad application prospects in future portable electronic equipment, national defense equipment and micro-electro-mechanical systems (MEMS), and have attracted people's attention. The series of micro-batteries actively researched at home and abroad include: lithium batteries, zinc-nickel batteries, solar cells, fuel cells, etc. Lithium batteries are considered the most suitable power source. [0003] At present, most lithium batteries use liquid electrolyte to realize the ion transmission process. The use of liquid elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/50H01M50/531H01M10/052H01M10/058H01M10/0562H01M10/42
CPCH01M10/04H01M2010/0495H01M50/20H01M50/502Y02E60/10Y02P70/50
Inventor 向勇彭晓丽张晓琨
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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