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

A technology that integrates solid-state and lithium batteries. It is used in nano-battery, secondary battery manufacturing, battery pack components, etc. The effect of voltage, high power density

Active Publication Date: 2019-10-15
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • 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-volt

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

[0047] The present invention also provides a specific embodiment of preparing thin-film lithium battery micro-unit 12, comprising the following steps:

[0048] 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.

[0049] 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, baked at 100°C for more than 10 minutes, with a thickness of 0-500nm.

[0050] 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. The micro-nano integrated solid-state thin-film lithium battery comprises a substrate and a plurality of thin-film lithium battery micro-units formed on the substrate, wherein the substrate is provided with a conductive circuit; the thin-film lithium battery micro-units are electrically connected to the conductive circuit; each thin-film lithium battery micro-unit comprises two independent current collectors, a positive electrode film, a solid electrolyte membrane and a negative electrode film which are successively formed on the substrate; the two current collectors are electrically connected to the conductive circuit; one of the current collectors is in electrical contact with the positive electrode film; the other one of the current collectors is in electrical contact with the negative electrode film; and the solid electrolyte membrane is disposed between the positive electrode film and the negative electrode film. The micro-nano integrated solid-state thin-film lithium battery of the invention can meet the requirements for high voltage, high energy density andhigh 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. Microbattery has a wide application prospect in future portable electronic equipment, national defense equipment and micro-electro-mechanical systems (MEMS), and has 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 electrolyt...

Claims

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Application Information

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IPC IPC(8): H01M2/10H01M2/20H01M10/04
CPCH01M10/04H01M2010/0495H01M50/20H01M50/502Y02E60/10Y02P70/50
Inventor 向勇彭晓丽张晓琨
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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