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Lithium-iron disulfide battery

An iron disulfide battery, lithium salt technology, applied in lithium batteries, secondary batteries, battery pack components, etc., can solve the problems of destroying consumer trust, burning danger, personal and property safety threats, and complexity, and achieve excellent safety. performance, good discharge performance, and broad market prospects

Active Publication Date: 2012-11-21
FUJIAN NANPING NANFU BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is that the situation with batteries on the market is much more complicated than we think, and we have to anticipate what happens to batteries when they are treated extremely poorly
The possible burning danger will pose a great threat to the safety of innocent people and property. Moreover, the burning of lithium batteries cannot be extinguished simply by passing water. Such a problem will seriously damage consumers' trust in it.

Method used

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Examples

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Embodiment 1

[0068] The electrolyte solution is prepared as follows: 490ml of anhydrous 1,2-dimethoxyethane and 490ml of anhydrous 1,3-dioxolane are mixed according to the volume ratio equal to 1. The above solvents can be obtained from Suzhou Nolight Co., Ltd. get. γ-butyrolactone and anhydrous lithium iodide (LiI) were both from Zhangjiagang Guotai Huarong Co., Ltd. Take the above mixed solvent and 20ml of γ-butyrolactone and mix them evenly in a container with a volume of 2000ml, then gradually add anhydrous lithium iodide into it, stir to make it fully dissolve, and obtain an electrolyte with a conductivity of 7.5mS / cm . The process of preparing the above electrolytes is carried out in a dry room with a dew point of -40°C.

[0069] The prepared electrolyte was used as the electrolyte, and a polyethylene microporous membrane with a thickness of 20 microns (model COD-120, produced by Asahi Kasei Co., Ltd., with a closed cell temperature of 145°C) was used as a separator, and was produc...

Embodiment 2

[0071] The method is the same as in Example 1, except that the addition of anhydrous lithium iodide is changed to prepare an electrolytic solution with a conductivity of 6.5mS / cm, and the AA-type lithium-iron disulfide battery is made with this electrolytic solution. for A2.

Embodiment 3

[0073] The method is the same as in Example 1, except that the addition of anhydrous lithium iodide is changed to prepare an electrolytic solution with a conductivity of 8.0mS / cm, and the AA-type lithium-iron disulfide battery is made with this electrolytic solution. for A3.

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Abstract

The invention discloses a lithium-iron disulfide battery which comprises a cathode, an anode and organic electrolyte. The cathode is made of metallic lithium or alloy thereof, the anode uses iron disulfide as anode active materials, and diaphragms are arranged between the cathode and the anode. The lithium-iron disulfide battery is characterized in that the organic electrolyte has conductivity ranging from 6.5mS / cm to 8.0mS / cm and comprises organic solvent and lithium salt dissolved in the organic solvent, the organic solvent is composed of gamma-butyrolactone, 1,2-dimethoxyethane and 1,3-dioxolane, the raw material volume ratio of the gamma-butyrolactone to total quantity of the 1,2-dimethoxyethane and the 1,3-dioxolane is (0-5):(95-100), and the diaphragms are polyethylene microporous diaphragms.

Description

technical field [0001] The present invention relates to the field of primary lithium batteries, in particular, relates to the use of iron disulfide (FeS 2 ) Lithium-iron disulfide (Li / FeS) as the positive electrode active material 2 ) battery, namely lithium iron battery. Background technique [0002] Due to the advantages of high energy density, high voltage, wide operating temperature range, and long life, lithium batteries have attracted more and more attention and attention. Over the past decade, lithium batteries have dominated the primary (non-rechargeable) and secondary (rechargeable) battery markets, and are widely used in portable electronic devices such as mobile phones, notebook computers, and digital cameras. [0003] Lithium-iron disulfide batteries are primary (non-rechargeable) batteries, which use iron disulfide as the positive electrode (positive electrode) active material, metal lithium as the negative electrode (negative electrode) active material, and o...

Claims

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Application Information

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IPC IPC(8): H01M10/052H01M10/0569H01M2/16
CPCY02E60/122Y02E60/10
Inventor 赵洋常海涛林建兴余佑锋陈娟张清顺
Owner FUJIAN NANPING NANFU BATTERY
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