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A kind of carbon fluoride-manganese dioxide metal battery electrolyte and battery containing the same

A manganese dioxide and metal battery technology is applied in the fields of lithium carbon fluoride-manganese dioxide batteries and carbon fluoride-manganese dioxide metal batteries, and can solve problems such as poor high and low temperature performance.

Active Publication Date: 2022-07-22
SHENZHEN CAPCHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem of poor high and low temperature performance of the existing carbon fluoride-manganese dioxide metal battery, the present invention provides a high and low temperature resistant carbon fluoride-manganese dioxide metal battery electrolyte, using the fluorination of the electrolyte Carbon-manganese dioxide metal batteries such as lithium carbon fluoride-manganese dioxide batteries have good capacity retention at high and low temperatures

Method used

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  • A kind of carbon fluoride-manganese dioxide metal battery electrolyte and battery containing the same
  • A kind of carbon fluoride-manganese dioxide metal battery electrolyte and battery containing the same
  • A kind of carbon fluoride-manganese dioxide metal battery electrolyte and battery containing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Preparation of the electrolyte of Example 1: 1M LiN (SO 2 f) 2 (LiFSI) dissolved in the solvent of vinylene carbonate (EC): fluoroethylene carbonate (FEC): ethyl methyl carbonate (EMC) = 1:1:8, and then add 1% of the first additive 1,1 ,2,2-tetrafluoroethane-1,3-bissulfonic acid cyclic imide lithium (LiHFDF), its chemical formula is as follows:

[0058]

[0059] The electrolyte is also added with 1% of the second additive lithium borate (LiBOB) at the same time, and finally the required electrolyte is prepared.

[0060] The preparation of the electrolytes of Examples 2-3 is similar to that of Example 1, except that different contents of LiHFDF and LiBOB are used to study the effect of the amount of LiHFDF and LiBOB on the electrochemical performance of the battery.

[0061] The preparation of the electrolytes of Examples 4-6 is similar to that of Example 1, except that the solvent uses FEC instead of EC+FEC, and uses different contents of LiBOB to study the effect ...

Embodiment 24

[0064] The type and dosage of the electrolyte additive in Example 24 are the same as those in Example 1, except that the electrolyte does not contain FEC, so as to study the effect of FEC on the electrolyte system.

Embodiment 25

[0065] The type and amount of the electrolyte additive in Example 25 are the same as in Example 1, and the lithium salt LiPF is used. 6 Instead of lithium salt LiFSI, it is used to study the effect of lithium salt on electrolyte system.

[0066] The preparations of Comparative Examples 1-3 were similar to those of Comparative Example 1, except that Comparative Examples 1-3 did not contain the first additive LiHFDF and / or the second additive LiBOB to study the effect of LiHFDF and LiBOB on the battery performance.

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Abstract

The present invention provides a fluorocarbon-manganese dioxide metal battery electrolyte, which comprises a solvent, a first additive and a second additive, wherein the first additive is selected from one or more of structural formula 1, structural formula 2 and structural formula 3 compounds in which R 1 , R 2 , R 3 , M 1 and M 2 As defined in the specification; the second additive is selected from one or more additives of structural formula 4, structural formula 5, structural formula 6, structural formula 7 and structural formula 8, wherein R 4 , R 5 , R 6 and M 3 as defined in the specification. The present invention also provides a carbon fluoride-manganese dioxide metal battery comprising the electrolyte, especially a lithium / carbon fluoride-manganese dioxide battery. The electrolyte of the invention enables the carbon fluoride-manganese dioxide metal battery to have a good capacity retention rate at both high and low temperatures.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a carbon fluoride-manganese dioxide metal battery electrolyte and a carbon fluoride-manganese dioxide metal battery containing the electrolyte, particularly a lithium carbon fluoride-manganese dioxide battery. Background technique [0002] In today's world, energy problems are becoming more and more serious, and environmental pollution continues to deteriorate. In order to achieve sustainable development, the utilization and development of various new and renewable energy sources, such as hydropower, wind power, hydrogen power, nuclear power, tidal power, and solar power, have become the research hotspots around the world. The improvement of energy storage device performance can effectively promote the popularization of new energy applications. Among the many energy storage devices, electrochemical energy storage batteries have become one of the important research ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M6/16
CPCH01M6/168H01M2300/0025
Inventor 邓永红肖映林谭光平钱韫娴胡时光
Owner SHENZHEN CAPCHEM TECH CO LTD
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