All-solid-state lithium ion battery and integrated composite sintering preparation process thereof

A lithium-ion battery, all-solid-state technology, applied in secondary battery manufacturing, electrolyte storage battery manufacturing, secondary batteries, etc., can solve the problem of affecting the electrochemical performance of the battery, affecting the performance of the charge and discharge rate of the battery, the energy density of the battery, and the particle size of the material. The interface contact area is small and other problems, to achieve the effect of enhancing the interface stability and interface transport performance, suitable for large-scale industrial production and application, and the preparation method is simple and efficient

Inactive Publication Date: 2019-08-23
浙江国能锂业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new technology allows for better quality batteries that have fewer defects than previous designs while still maintain their original properties such as good charge/discharge characteristics. Additionally, it simplifies the manufacturing processes used during its design without generating environmental hazards like organic solvents. Overall, these improvements improve the efficiency, reliability, safety, energy storage capacity, power output capabilities, lifespan, and cost savings associated therewith compared to existing technologies.

Problems solved by technology

Technological Problem: Current Li-Ion Battery Cells require strict sealing requirements with regards to prevent leaks from external sources like water vapor or oxygen gas while still being able to maintain their function over long periods without losing its effectiveness. Additionally, they must resist burning out if accidental ignition occurs at any location within them. Previous solutions such as adding plasticizers were limited because these materials could flow back through cracks formed during cool down after manufacturing. To address these issues, new compositions based on different ways including high temperature sinterings, thermal fusion techniques, etc., along with improved interfaces between constituents and better conductance properties would improve both cell capacity and cycle life characteristics.

Method used

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  • All-solid-state lithium ion battery and integrated composite sintering preparation process thereof
  • All-solid-state lithium ion battery and integrated composite sintering preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 as shown,

[0029] An all-solid-state lithium ion battery provided in this embodiment includes an electrode-electrolyte composite electrode sheet and a metal electrode, the metal electrode is arranged at both ends of the electrode-electrolyte composite electrode sheet, and the electrode-electrolyte composite electrode sheet is composed of Positive electrode / positive electrode-electrolyte mixed phase / electrolyte / electrolyte-negative electrode mixed phase / negative electrode are sequentially superimposed and compacted by cold isostatic pressing, and the negative electrode material is Li 4 Ti 5 o 12 , the cathode material is LiNi 0.8 co 0.1 mn 0.1 o 2 , the electrolyte is Li 0.33 La 0.56 TiO 3 .

Embodiment 2

[0031] Such as figure 2 as shown,

[0032] An all-solid-state lithium ion battery provided in this embodiment includes an electrode-electrolyte composite electrode sheet and a metal electrode, the metal electrode is arranged at both ends of the electrode-electrolyte composite electrode sheet, and the electrode-electrolyte composite electrode sheet is composed of Positive electrode / positive electrode-electrolyte mixed phase / electrolyte / negative electrode are sequentially stacked and compacted by cold isostatic pressing. The negative electrode material is a non-oxide, which is a silicon-carbon composite material in this implementation, and the positive electrode material is LiNi 0.8 co 0.1 mn 0.1 o 2 , the electrolyte is Li 7 La 3 Zr 2 o 12 .

Embodiment 3

[0034] An all-solid-state lithium ion battery provided in this embodiment includes an electrode-electrolyte composite electrode sheet and a metal electrode, the metal electrode is arranged at both ends of the electrode-electrolyte composite electrode sheet, and the electrode-electrolyte composite electrode sheet is composed of Positive electrode / positive electrode-electrolyte mixed phase / electrolyte / electrolyte-negative electrode mixed phase / negative electrode are sequentially superimposed and compacted by cold isostatic pressing, and the negative electrode material is Li 4 Ti 5 o 12 , the cathode material is LiNi 0.8 co 0.1 mn 0.1 o 2 , the electrolyte is Li 7 La 3 Zr 2 o 12 .

[0035] The content that is not described in detail in the present invention can adopt the prior art, so it will not be repeated here.

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Abstract

The invention belongs to the technical field of new energy materials, in particular to an all-solid-state lithium ion battery and an integrated composite sintering preparation process thereof. The all-solid-state lithium ion battery comprises at least one electrode-electrolyte composite electrode sheet. The electrode of the electrode-electrolyte composite electrode sheet is made of lithium oxide positive electrode or oxide negative electrode material, and the electrode is a solid oxide electrolyte. The interface problem of the all-solid-state lithium battery can be effectively improved and theinterface bonding degree and the interface structure stability between the electrode and the solid electrolyte can be remarkably enhanced so that the single cell has higher density and energy densityand also has very excellent safety performance and is suitable for large-scale production and application.

Description

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Claims

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Application Information

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Owner 浙江国能锂业有限责任公司
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