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Fluorinated carbon-manganese dioxide metal battery electrolyte and battery comprising same

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

Active Publication Date: 2021-03-05
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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  • Fluorinated carbon-manganese dioxide metal battery electrolyte and battery comprising same
  • Fluorinated carbon-manganese dioxide metal battery electrolyte and battery comprising same
  • Fluorinated carbon-manganese dioxide metal battery electrolyte and battery comprising same

Examples

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Embodiment 1

[0057] The preparation of the electrolytic solution of embodiment 1: with 1M LiN(SO 2 f) 2 (LiFSI) is dissolved in the solvent of vinylene carbonate (EC): fluoroethylene carbonate (FEC): ethylmethyl carbonate (EMC) = 1:1:8, and then add 1% of the first additive 1,1 , 2,2-tetrafluoroethane-1,3-bissulfonic acid cycloimide lithium (LiHFDF), its chemical formula is as follows:

[0058]

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

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

[0061] The preparation of the electrolyte of Examples 4-6 is similar to that of Example 1, except that the solvent uses FEC instead of EC+FEC, and uses diffe...

Embodiment 24

[0064] The type and dosage of the electrolyte additive in Example 24 are the same as 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 kind and consumption of the electrolyte additive of embodiment 25 are the same as embodiment 1, with lithium salt LiPF 6 Instead of lithium salt LiFSI, it is used to study the effect of lithium salt on the electrolyte system.

[0066] The preparation of Comparative Examples 1-3 was similar to that of Example 1, except that Comparative Examples 1-3 did not contain the first additive LiHFDF and / or the second additive LiBOB, so as to study the influence of LiHFDF and LiBOB on battery performance.

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Abstract

The present invention provides a fluorinated carbon-manganese dioxide metal battery electrolyte. The electrolyte comprises a solvent, a first additive and a second additive, the first additive is selected from one or more compounds represented by a structural formula 1, a structural formula 2 and a structural formula 3, and R1, R2, R3, M1 and M2 are defined in the specification; and the second additive is selected from one or more additives shown in a structural formula 4, a structural formula 5, a structural formula 6, a structural formula 7 and a structural formula 8, and R4, R5, R6 and M3 are defined in the specification. The invention also provides a fluorinated carbon-manganese dioxide metal battery containing the electrolyte, especially a lithium / fluorinated carbon-manganese dioxidebattery. The electrolyte provided by the invention enables the fluorinated carbon-manganese dioxide metal battery to have a good capacity retention ratio at high and low temperatures.

Description

technical field [0001] The invention belongs to the technical field of batteries, in particular to a carbon fluoride-manganese dioxide metal battery electrolyte and a carbon fluoride-manganese dioxide metal battery containing the electrolyte, in particular to a lithium carbon fluoride-manganese dioxide battery. Background technique [0002] The energy problem in today's world is becoming more and more serious, and the environmental pollution continues to worsen. In order to achieve sustainable development, the utilization and development of various new and renewable energy sources such as water energy, wind energy, hydrogen energy, nuclear energy, tidal energy, and solar energy have become research hotspots around the world. The improvement of the performance of energy storage devices 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 Applications(China)
IPC IPC(8): H01M6/16
CPCH01M6/168H01M2300/0025
Inventor 邓永红肖映林覃光平钱韫娴胡时光
Owner SHENZHEN CAPCHEM TECH CO LTD
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