Electrolyte and battery using it

An electrolyte and battery technology, applied in the electrolyte field, can solve problems such as reducing battery characteristics, and achieve the effect of suppressing capacity reduction and reducing self-discharge ratio

Inactive Publication Date: 2005-06-01
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, with the development of the application of mobile electronic devices, there is a problem that the characteristics of the battery will be reduced when the mobile electronic device is in a high temperature environment, such as transportation and its application.

Method used

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  • Electrolyte and battery using it
  • Electrolyte and battery using it
  • Electrolyte and battery using it

Examples

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Embodiment 1～9

[0090] The storage battery explained in the embodiment was manufactured. The structure of the electrode winding body 20 is as image 3 shown. As electrolyte, use mixed solvent (wherein the volume ratio of ethylene carbonate and dimethyl carbonate is 2: 8); Additive, any one in the compound shown in chemical formula 5~9, chemical formula 11~13 and chemical formula 15 species; and electrolyte salt LiPF 6 mixture. As shown in Table 1 and Table 2, the amount of additives was varied in the range of 0.01 to 1.0 mol / l. The amount of the electrolyte salt is 1 mol / l, which is the amount relative to the solvent. As the cathode material, the active material LiCoO is used 2 ; carbon black (trade name: Ketjen black) as a conductive agent; and polyvinylidene fluoride as a binder, so that the mass ratio thereof is 93:3:4. In addition, as the anode material, a graphitic carbon material with an average particle diameter of 15 μm was used as an active material and polyvinylidene fluoride ...

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Abstract

The present invention provides a battery capable of suppressing self-discharge even if the battery is placed in a high-temperature environment, and an electrolytic solution used for the battery. An electrode winding body in which a cathode and an anode are laminated and wound with a separator between the cathode and anode is equipped in the battery case. Electrolyte is impregnated in the separator. The electrolytic solution contains at least one of a compound having a structure shown below and an ionic liquid shown below.

Description

technical field [0001] The present invention relates to an electrolytic solution containing a compound including a specific structure, and a battery using the electrolytic solution. Background technique [0002] In recent years, many portable electronic devices have been introduced, such as laptop portable computers, cell phones, and combination cameras. These devices are downsized and reduced in weight. Along with this situation, as a power source for these portable electronic devices, lightweight secondary batteries capable of providing high energy density have been developed. As batteries capable of providing high energy density, for example, lithium ion batteries using materials capable of intercalating and extracting lithium (Li), such as carbon materials, as an anode active material, or lithium metal batteries using metallic lithium as an anode active material are known. [0003] In lithium-ion batteries or lithium batteries, conventionally, in order to improve batte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/05H01M6/16H01M10/052H01M10/0567
CPCH01M4/131H01M4/133H01M10/0567Y02E60/10
Inventor 鹈川晋作
Owner SONY CORP
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