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Battery with nonaqueous electrolyte

A non-aqueous electrolyte, battery technology, applied in non-aqueous electrolyte batteries, battery electrodes, circuits, etc., can solve problems such as insufficient pulse discharge

Inactive Publication Date: 2009-06-10
TOSHIBA BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, even with these improvements, it is still not sufficient for applications such as pulse discharge where the current is concentrated at the initial stage of discharge. In particular, further improvement is required so that it can be used continuously at high temperatures and can be used under severe use conditions. get the full working voltage

Method used

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  • Battery with nonaqueous electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 1 Cross-sectional views of batteries of Examples of the present invention and Comparative Examples are shown in . figure 1 It is a cross-sectional view of an A-sized thionyl chloride-lithium battery using lithium as a negative electrode material and thionyl chloride as a positive electrode material.

[0031] figure 1 Among them, 1 is a stainless steel battery can with a diameter of 16 mm that doubles as a negative electrode terminal, and a cylindrical negative electrode 2 is crimped on the inner surface of the battery can. 3 is a porous carbon positive electrode body, which is made of 45% by mass of acetylene black , 45% by mass of furnace black, 10% by mass of polytetrafluoroethylene and a mixed solution of water and ethanol are mixed together, and then the mixed object is formed around the positive electrode current collector 7 to have an outer diameter of 10 mm and a height of 35 mm. It was obtained by vacuum drying at 150°C for 8 hours. The positive electr...

Embodiment 2

[0036] A battery was produced in the same manner as in Example 1 except that the concentration of bismuth chloride added was 0.07 mmol / kg.

Embodiment 3

[0038] A battery was produced in the same manner as in Example 1 except that the concentration of bismuth chloride added was 0.4 mmol / kg.

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Abstract

This invention provides a battery with a nonaqueous electrolyte that has excellent pulse discharge characteristics and has prolonged discharge duration days. In this battery with a nonaqueous electrolyte, lithium or a lithium alloy is used in a negative electrode (2), and an oxyhalide, which is liquid at room temperature, is used as a positive electrode acting substance. A bismuth compound or an indium compound is contained in the battery, whereby an excessive reaction between lithium and an oxyhalide is suppressed and consequently can reduce a voltage delay phenomenon at the time of start of discharge and can improve pulse discharge characteristics to prolong discharge duration days. The bismuth compound or indium compound is preferably incorporated in the battery by dissolving or dispersing the bismuth compound or indium compound in a positive electrode acting substance which serves also as an electrolyte.

Description

technical field [0001] The present invention relates to a non-aqueous electrolyte battery using a positive electrode acting material and an electrolyte, and more specifically, to a non-aqueous electrolyte battery with improved pulse discharge characteristics. Background technique [0002] The so-called "non-aqueous electrolyte battery" that uses metallic lithium as the negative electrode material and the positive electrode material uses oxyhalides such as thionyl chloride, sulfuryl chloride, and phosphorus oxychloride that are liquid at room temperature, and has high energy density and excellent storage characteristics. , The characteristics of a wide operating temperature range, are widely used as power supplies such as memory backup power supplies for industrial equipment. [0003] In this type of battery, lithium halide produced by the reaction with the positive electrode substance accumulates on the surface of metal lithium as the negative electrode, forming a protective...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M6/14H01M4/62
CPCY02E60/12
Inventor 铃木正美花房聪一
Owner TOSHIBA BATTERY
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