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Battery with nonaqueous electrolyte

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

Inactive Publication Date: 2007-11-07
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
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Effect test

Embodiment 1

[0030] Fig. 1 shows a cross-sectional view of a battery according to an embodiment of the present invention and a comparative example. Fig. 1 is a cross-sectional view of a thionyl chloride-lithium battery of A specification in which lithium is used as a negative electrode material and thionyl chloride is used as a positive electrode material.

[0031] In Figure 1, 1 is a stainless steel battery can with a diameter of 16 mm that also serves as a negative terminal. 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 acetylene black 45 Mass%, furnace black 45% by mass, PTFE 10% by mass are mixed with a mixture of water and ethanol, and then the mixed object is formed around the positive electrode current collector 7 to have an outer diameter of 10mm and a height of 35mm , It is obtained by vacuum drying at 150°C for 8 hours. The positive electrode current collector 7 is obtained by form...

Embodiment 2

[0036] Except that the additive concentration of bismuth chloride was set to 0.07 mmol / kg, the battery was produced in the same manner as in Example 1.

Embodiment 3

[0038] Except that the concentration of bismuth chloride added was 0.4 mmol / kg, it was the same as in Example 1, and a battery was produced.

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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 function material and 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" using metal lithium as the negative electrode active material, and the positive electrode active material using thionyl chloride, sulfuryl chloride, phosphoryl chloride and other oxyhalides that are liquid at room temperature, has high energy density and excellent storage characteristics , The characteristics of a wide operating temperature range, as a power source such as a memory backup power supply for industrial equipment, is widely used. [0003] In this type of battery, lithium halide generated by the reaction with the positive electrode functioning material is deposited on the surface of the metal lithium as the negative electrode to form a p...

Claims

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Application Information

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IPC IPC(8): H01M6/14H01M4/62
Inventor 铃木正美花房聪一
Owner TOSHIBA BATTERY
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