Method for manufacturing all-solid-state batteries in a multilayer structure

An all-solid-state battery, all-solid-state technology, applied to lithium-ion batteries, the manufacture of such batteries, and the field of all-solid-state lithium-ion batteries, which can solve the problems that cannot be assembled to make monolithic components, all-solid-state multi-layer battery units, etc.

Active Publication Date: 2015-09-09
I TEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They consist of a single cathode / electrolyte / anode stack fabricated by sequential deposition of each of the cathode, electrolyte, and anode layers, and thus cannot be assembled to make an all-solid-state multilayer battery cell in the form of a monolithic assembly
[0018] Can only create parallel electrical connections of multiple individual battery cells

Method used

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  • Method for manufacturing all-solid-state batteries in a multilayer structure
  • Method for manufacturing all-solid-state batteries in a multilayer structure
  • Method for manufacturing all-solid-state batteries in a multilayer structure

Examples

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example 1

[0236] a) Preparation of the substrate

[0237] Aluminium strips with a thickness of 15 μm are available. The tape was placed in an uncoiler and on a holding frame to create a rigid structure for holding without buckling the aluminum tape. The retaining frame has an outer insulating surface; however, its inner conducting surface is in electrical contact with the aluminum strip, to which an electrical potential can be applied.

[0238] b) Make Li 4 Ti 5 O 12 Colloidal suspension of nanoparticles / depositing anode layer / on anode layer Electrolyte layer deposited on top

[0239] For the fabrication of anodic electrodes on pre-prepared aluminum substrates, a colloidal suspension of nanoparticles with the following chemical composition: 2 g / l Li was produced in ethanol 4 Ti 5 O 12 , 0.02g / l carbon black powder, 0.3g / l Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3and a few ppm of citric acid. The size of the particles in the colloidal suspension is between 20 and 70 nm. By ...

example 2

[0249] a) Preparation of the substrate

[0250] A copper strip having a thickness of 5 μm, the smooth surface of which had been smoothed by electropolishing in advance, was coated with a 100 nm thin film of chromium (Cr) produced by metallization. The substrate is then placed in an uncoiler on a holding frame to create a rigid structure for holding without crimping the tape. The retaining frame has an outer insulating surface; however, its inner conducting surface is in electrical contact with the chromium-coated copper strip and enables the application of an electrical potential thereon.

[0251] b) Making Li 4 Ti 5 O 12 Nanoparticle colloidal suspension / depositing anode layer / on anode layer Electrolyte layer deposited on top

[0252] To make an anode electrode on a pre-prepared substrate, a colloidal suspension of nanoparticles was made in ethanol with the following chemical composition: 10 g / l Li 4 Ti 5 O 12 Nanopowder and a few ppm (<10 ppm) of citr...

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Abstract

The invention relates to a method for manufacturing all-solid-state batteries, said batteries including at least one layer containing anode materials ("anode layer"), at least one layer containing solid electrolyte materials ("electrolyte layer"), and at least one layer containing cathode materials ("cathode layer"), each of said three layers being deposited by electrophoresis, method in which two layers obtained by electrophoresis are stacked surface-to-surface in order to obtain a multi-layer, all-solid-state battery consisting of an assembly of a plurality of elementary cells connected to one another in parallel, said method being characterised in that, prior to stacking said layers obtained by electrophoresis surface-to-surface, a layer of linking material M is deposited on the surface of at least one of said two layers obtained by electrophoresis which will be stacked surface-to-surface.

Description

technical field [0001] The present invention relates to the field of batteries, in particular to lithium ion batteries. More specifically, it relates to all-solid-state lithium-ion batteries, and new methods for making such batteries. Background technique [0002] The way to make lithium-ion batteries ("Lithium Batteries") has been proposed in many literatures and patents, and "Advances in Lithium-Ion batteries" published in 2002 (Kluever Academic / Plenum Press) (Editor: W. van Schalkwi jk and B. Scrosati) works for a better assessment of them. Electrodes for lithium batteries can be fabricated by printing techniques (especially: roll coating, doctor blade, tape casting). These techniques enable the fabrication of deposits with thicknesses of 50 to 400 μm. Depending on the thickness of the deposit, its porosity, and the size of the active particles, the power and energy of the battery can be adjusted. The ink (or paste) deposited to form the electrodes contains not only t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M4/139H01M10/04H01M10/052H01M10/0562H01M10/0585
CPCY02E60/122H01M4/139H01M4/0457C25D13/02H01M10/052H01M10/0585H01M10/0562H01M10/0436Y10T29/49117Y02E60/10Y02P70/50H01M10/0525H01M2220/30H01M50/147
Inventor 法比安·加邦
Owner I TEN
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