Nonaqueous electrolyte and nonaqueous electrolyte battery

A non-aqueous electrolyte and battery technology, applied in non-aqueous electrolyte batteries, non-aqueous electrolytes, electrolytes, etc., can solve the problems of ion conductivity reduction, deterioration, capacity reduction, etc., to achieve inhibition of decomposition, high effect, and inhibition of battery capacity reduction. Effect

Active Publication Date: 2011-07-27
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When placed in a charged state at high temperature, the positive electrode deteriorates due to the reaction between the electrolyte and the positive active material on the surface of the positive electrode, resulting in reduced capacity after long-term storage
Moreover, when placed in a low-temperature environment, the ionic conductivity decreases, resulting in reduced capacity

Method used

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  • Nonaqueous electrolyte and nonaqueous electrolyte battery
  • Nonaqueous electrolyte and nonaqueous electrolyte battery
  • Nonaqueous electrolyte and nonaqueous electrolyte battery

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0035] 1. First Embodiment (Structure of Nonaqueous Electrolyte)

[0036] 2. Second Embodiment (Example of Cylindrical Nonaqueous Electrolyte Battery)

no. 3 approach

[0037] 3. Third embodiment (example of laminated non-aqueous electrolyte battery)

no. 4 approach

[0038] 4. Fourth Embodiment (Example of Coin Type Nonaqueous Electrolyte Battery)

[0039] 1. First Embodiment

[0040] (1-1) Structure of non-aqueous electrolyte

[0041] The nonaqueous electrolyte according to the first embodiment of the present invention is composed of a nonaqueous solvent containing a halogen carbonate and an electrolyte salt containing an imide salt. The nonaqueous solvent and electrolyte salt are described in detail below.

[0042] [Non-aqueous solvent]

[0043]

[0044] The non-aqueous solvent according to the first embodiment of the present invention contains at least one selected from the group consisting of a halogen-containing chain carbonate represented by the following formula (1) and a halogen-containing cyclic carbonate represented by the following formula (2).

[0045]

[0046] (In formula (1), R1 to R6 each represent a hydrogen group, a halogen group, an alkyl group or a haloalkyl group, as long as at least one of R1 to R6 represents a...

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Abstract

The present invention discloses a nonaqueous electrolyte and a nonaqueous electrolyte battery. The nonaqueous includes: a nonaqueous solvent containing 0.1% by volume or more and not more than 50% by volume of at least one member selected from the group consisting of a halogen element-containing chain carbonate represented by the following formula (1) and a halogen element-containing cyclic carbonate represented by the following formula (2); and an electrolyte salt containing a compound represented by the following formula (3) in an amount of 0.001 moles/L or more and not more than 0.5 moles/L relative to the nonaqueous solvent.

Description

technical field [0001] The present invention relates to a nonaqueous electrolyte and a nonaqueous electrolyte battery. Specifically, the present invention relates to a nonaqueous electrolyte and a nonaqueous electrolyte battery capable of maintaining excellent battery characteristics in low-temperature environments and high-temperature environments. Background technique [0002] In recent years, a large number of portable electronic products such as camera-integrated VTRs, digital still cameras, mobile phones, personal digital assistants, and laptop computers have emerged, and efforts have been made to reduce their size and weight. For batteries, especially, secondary batteries used as portable power sources for such electronic products, research and development are actively conducted in order to enhance energy density. In particular, lithium ion secondary batteries using carbon for the negative electrode active material, lithium transition metal composite oxides for the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0568H01M10/0569H01M10/05
CPCH01M2300/0034H01M10/4235H01M2300/0037H01M10/0567Y02E60/122H01M2300/0025H01M6/164H01M10/0569H01M10/0568H01M10/052Y02E60/10
Inventor 小谷徹洼田忠彦
Owner MURATA MFG CO LTD
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