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COMSOL model-based manufacturing method of solid-state lithium battery

A production method and solid-state lithium technology, which can be used in secondary batteries, circuits, electrical components, etc., can solve the problems of materials and time waste, and achieve the effect of saving cost and time

Active Publication Date: 2018-11-23
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current trial-and-error method of battery preparation and the empirical design of solid-state lithium batteries will cause technical problems such as a great waste of materials and time.

Method used

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  • COMSOL model-based manufacturing method of solid-state lithium battery
  • COMSOL model-based manufacturing method of solid-state lithium battery
  • COMSOL model-based manufacturing method of solid-state lithium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of method based on COMSOL model solid-state lithium battery design, comprises the steps:

[0028] 1) Obtain the basic parameters of materials in solid-state lithium batteries Li / LiPON / LCO by electrochemical methods such as AC impedance, constant current intermittent titration, cyclic voltammetry, and equilibrium potential curves

[0029] 2) Enter the COMSOL software interface, create a new one-dimensional model, select the secondary current module and the PDE general module in the electrochemical module, and select the transient state. Add parameters and plug-in functions to definitions.

[0030] 3) Set up a one-dimensional model of a solid-state lithium battery. The thicknesses of the negative electrode, electrolyte, and positive electrode are 1um, 1um, and 600nm in sequence. Both the negative electrode and the positive electrode use the electrode mode, and the material parameters in the corresponding area are set. The PDE module is applied to the positive ele...

Embodiment 2

[0038] A kind of method based on COMSOL model solid-state lithium battery design, comprises the steps:

[0039] 1) Obtain the basic parameters of materials in solid-state lithium batteries Li / LiPON / LCO by electrochemical methods such as AC impedance, constant current intermittent titration, cyclic voltammetry, and equilibrium potential curves

[0040] 2) Enter the COMSOL software interface, create a new one-dimensional model, select the secondary current module and the PDE general module in the electrochemical module, and select the transient state. Add parameters and plug-in functions to definitions.

[0041] 3) Set up four one-dimensional models of solid-state lithium batteries. The thicknesses of the negative electrode and electrolyte are 1um and 1um in sequence, and the thicknesses of the positive electrode are 600nm, 3um, 6um, and 12um in sequence. Both the negative electrode and the positive electrode use the electrode mode, and the material parameters in the correspond...

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Abstract

The invention relates to a COMSOL model-based manufacturing method of a solid-state lithium battery, and belongs to the technical field of chemical power supply. The COMSOL model-based manufacturing method of the solid-state lithium battery includes: 1) obtaining property data of battery material through alternating-current impedance, a galvanostatic intermittent titration technique, cyclic voltammetry or an equilibrium potential curve electrochemical-method, and calculating and obtaining parameters of the battery material; 2) using COMSOL electrochemical-modules and PDE modules to establish atransient model of the solid-state lithium battery; 3) establishing geometric physical models of the solid-state lithium battery, and assigning parameters of the step 2) to corresponding material areas, 4) setting initial calculation conditions and boundary conditions; 5) dividing meshes, and carrying out calculation, wherein a one-dimensional physical model adopts a point mesh, a two-dimensionalphysical model adopts a rectangular mesh, and a three-dimensional physical model adopts a thin-plate-type cuboid mesh; and 6) carrying out comparative analysis on calculation results of different process parameters. According to the method, theoretical guidance on solid-state lithium battery design is realized, costs and time are saved, and promotion and application of the solid-state lithium battery are facilitated.

Description

technical field [0001] The invention belongs to the technical field of chemical power sources, in particular to a method for manufacturing a solid-state lithium battery based on a COMSOL model. Background technique [0002] At present, the energy density and safety of chemical power sources can no longer meet the growing application requirements. Therefore, it is urgent to develop new chemical power sources with high energy density, long working life and good safety and reliability. Solid-state lithium batteries are an important development of new chemical power sources. one of the directions. Solid-state lithium batteries have the advantages of high energy density, good safety, excellent mechanical properties, and strong processability, so they have very broad application prospects in military and civilian energy storage fields. [0003] However, the process parameters of solid-state lithium batteries have a great influence on its performance, such as the thickness of the ...

Claims

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Application Information

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IPC IPC(8): G06F17/50H01M10/0525
CPCH01M10/0525G06F30/367Y02P70/50
Inventor 王松蕊卢立丽
Owner CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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