Process for manufacturing monolithic all-solid-state battery

An all-solid-state battery and battery technology, applied in battery manufacturing, electrode manufacturing, impregnation manufacturing, etc., can solve problems such as deterioration, inability to produce all-solid single-chip three-dimensional battery assemblies, and cracks.

Active Publication Date: 2015-10-28
I TEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, too high a temperature can oxidize or significantly degrade the metal substrate
In addition, layers deposited on the substrate can cause cracks during sintering
These disadvantages require that the current collector be deposited on the end of the battery cell formed by the cathode / electrolyte / anode stack
Therefore, the constraints associated with the deposition of current collectors do not make it impossible to produce all-solid monolithic three-dimensional battery assemblies composed of multiple elementary cells

Method used

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  • Process for manufacturing monolithic all-solid-state battery
  • Process for manufacturing monolithic all-solid-state battery
  • Process for manufacturing monolithic all-solid-state battery

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0171] Example 1 : Ni / Li 4 Ti 5 O 12 / LiPON / LiCoO 2 / Ni assembly

[0172] a) Prepare the substrate

[0173] A nickel strip having a thickness of 20 μm is provided. An ITO film covered with a Pt film of about 100 nm is deposited on these strips to prevent nickel from diffusing into the electrode material during the heat treatment step. Each of the bars is placed in the support frame to create a rigid structure for supporting the substrate.

[0174] b) Depositing the anode layer / depositing the electrolyte layer on the anode layer

[0175] The anode layer is deposited on the substrate by the sol-gel method. By impregnating the substrate to deposit polyvinylpyrrolidone (PVP), titanium isopropoxide (CH 3 ) 2 CHO) 4 Ti, acetic acid (CH 3 COOH) and lithium isopropanol (Li(OC 3 H 7 )The solution. The molar chemical composition of this solution is Li(OC 3 H 7 ) / ((CH 3 ) 2 CHO) 4 Ti / PVP / CH 3 COOH / i-C 3 H 7 OH=4:5:5:100:100. Next, the first deposition layer was dried and sintered at 700° ...

example 2

[0184] Example 2 : Ni / Li 4 Ti 5 O 12 / Li 3 Sc 1.6 Al 0.4 (PO 4 ) 3 / LiCoO 2 / Ni assembly

[0185] a) Prepare the substrate

[0186] A nickel strip having a thickness of 10 μm is provided. On these strips, a thin palladium film of about 100 nm is deposited. The strips are placed in the support frame to create a rigid structure for supporting the substrate.

[0187] b) Depositing the anode layer / depositing the electrolyte layer on the anode layer

[0188] The anode layer is deposited on the substrate by the sol-gel method. By impregnating the substrate to deposit polyvinylpyrrolidone (PVP), titanium isopropoxide (CH 3 ) 2 CHO) 4 Ti, acetic acid (CH 3 COOH) and lithium isopropanol (Li(OC 3 H 7 )The solution. The molar chemical composition of this solution is Li(OC 3 H 7 ) / ((CH 3 ) 2 CHO) 4 Ti / PVP / CH 3 COOH / i-C 3 H 7 OH=4:5:5:100:100. Next, the first deposition layer was dried and sintered at 700°C for 1 hour, and then the deposition step was performed by dripping the solution as d...

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Abstract

The invention relates to a process for manufacturing all-solid-state batteries, said batteries comprising at least one dense layer containing anode materials ("anode layer") at least one dense layer containing solid electrolyte materials ("electrolyte layer"), and at least one dense layer containing cathode materials ("cathode layer"), in order to obtain an all-solid-state battery consisting of an assembly of a plurality of elementary cells.

Description

Technical field [0001] The present invention relates to the field of batteries, in particular to lithium ion batteries. More specifically, the present invention relates to all-solid-state lithium-ion batteries, and novel methods for manufacturing such batteries. Background technique [0002] Many articles and patents proposed ways to manufacture lithium-ion batteries, and published in 2002 (Kluever Academic / Plenum Publishers) the work "Advances in Lithium-Ion Batteries" (ed.W.van Schalkwijk) and B.Scrosati) provided a good evaluation of these manufacturing methods. It is possible to use printing or deposition techniques known to those skilled in the art (especially roll coating, doctor blade, casting) to produce lithium ion battery electrodes. These technologies make it possible to produce deposits with thicknesses between 50 μm and 400 μm. The power and energy of the battery can be adjusted depending on the thickness of the deposit, the porosity and the size of the active par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1391H01M10/0525H01M10/0562H01M10/0585C23C14/00C23D13/02H01M4/36H01M4/62H01M4/04
CPCH01M10/0585H01M4/0421H01M4/0438H01M4/1391H01M4/366H01M4/62H01M4/622H01M10/0525H01M10/0562H01M2300/0068Y02E60/122Y02P70/54Y02E60/10Y02P70/50C25D13/16H01M4/0416H01M4/0419H01M4/0423H01M4/0426H01M4/0428H01M4/0457H01M10/0468
Inventor 法比安·加邦
Owner I TEN
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