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Lithium battery electrolyte solution and prepared lithium primary battery

An electrolyte and lithium battery technology, which is applied in the field of lithium primary batteries, can solve problems such as poor safety, and achieve the effect of solving poor safety

Inactive Publication Date: 2016-11-09
HUIZHOU HUIDERUI LITHIUM BATTERY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding a lithium salt with good thermal stability in the electrolyte, that is, lithium difluorooxalate borate LiDFOB, mixed use of lithium difluorooxalate borate and a lithium salt with high conductivity, solves the existing problem without reducing the battery capacity. The problem of poor safety of lithium primary batteries

Method used

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  • Lithium battery electrolyte solution and prepared lithium primary battery
  • Lithium battery electrolyte solution and prepared lithium primary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Positive electrode active material, conductive agent acetylene black and graphite, binder, add pure water and stir until uniform, coat the dispersed positive electrode active material slurry on the positive electrode current collector (316 stainless steel mesh, 430 stainless steel mesh, aluminum mesh, Either aluminum foil or copper foil), and cut into the positive electrode sheet of the battery after rolling. After the positive electrode sheet is dried and completely removed of moisture, it is placed in an environment with a relative humidity below 1.0%, and a porous separator is inserted between the negative electrode (metal aluminum or lithium aluminum alloy) and the positive electrode sheet to separate the positive and negative electrodes. membrane, wound into a cylindrical cell, and the wound cell is put into the battery case (the case is steel case, aluminum case or aluminum-plastic film), using lithium difluorooxalate borate LiDFOB, lithium perchlorate (LiCLO 4 ) ...

Embodiment 2

[0014] In the same manner as in Example 1, lithium difluorooxalate borate (LiDFOB), lithium perchlorate (LiCLO 4 ) as a lithium salt, and the ratio of the two (lithium difluorooxalate borate and lithium perchlorate) is 4:4, and the lithium primary battery non-aqueous electrolyte is assembled into a battery.

Embodiment 3

[0016] In the same manner as in Example 1, lithium difluorooxalate borate (LiDFOB), lithium perchlorate (LiCLO 4 ) as a lithium salt, and the ratio of the two (lithium difluorooxalate borate and lithium perchlorate) is 6:4, and the lithium primary battery non-aqueous electrolyte is assembled into a battery.

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Abstract

The invention belongs to the field of the chemical battery, and particularly relates to a lithium battery electrolyte solution and a prepared lithium primary battery. The lithium battery electrolyte solution comprises an organic solvent and an electrolyte, wherein the electrolyte is a mixed lithium salt; and the hybrid lithium salt is lithium difluoro(oxalato)borate and lithium perchlorate / lithium iodide. The lithium salt which refers to lithium difluoro(oxalato)borate LiDFOB with high thermal stability is added to the electrolyte solution; the lithium difluoro(oxalato)borate is mixed with the lithium salt having relatively high conductivity; and the problem of the low safety of the existing lithium primary battery is solved on the basis of not decreasing the capacity of the battery.

Description

technical field [0001] The invention relates to the field of chemical batteries, in particular to a lithium battery electrolyte and the resulting lithium primary battery. Background technique [0002] Lithium primary batteries have the advantages of high specific energy, high energy density, low self-discharge rate, and long storage life. The market demand continues to increase, and they are gradually replacing other primary batteries such as alkaline manganese and silver oxide. However, the safety problem of lithium primary batteries has always been an important issue of our concern, especially the electrolytes used in lithium primary batteries currently contain combustible lithium salts, such as lithium Under discharge and other conditions, the battery is likely to burn and explode, causing unsafe accidents. In order to improve the safety of such batteries, lithium trifluoromethanesulfonate (LiCF 3 SO 3 ), lithium bisoxalate borate (LiBOB), lithium difluorooxalate borat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/16
CPCH01M6/16H01M6/166H01M2300/0025
Inventor 何献文梁辉潘文硕
Owner HUIZHOU HUIDERUI LITHIUM BATTERY TECHNOLOGY CO LTD
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