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Lithium-iron disulfide battery

A kind of iron disulfide battery, battery technology, applied in the direction of lithium battery, secondary battery, battery electrode, etc.

Active Publication Date: 2014-07-16
FUJIAN NANPING NANFU BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] As mentioned above, the electrochemical performance of commercially available Li / FeS2 batteries often cannot give full play to the theoretical advantages of FeS2 positive electrode active materials. Unable to achieve theoretically high power output

Method used

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  • Lithium-iron disulfide battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Production of positive electrode sheet

[0040] Lithium battery grade FeS purchased from Guangdong Yunfu Pyrite Group was used 2 As the positive electrode active material of this embodiment. The product contains 99% by weight cubic p-type FeS 2 (The crystal structures in the examples of this application are determined by ordinary X-ray diffractometer, and the conductivity type and its content are identified by a semiconductor conductivity type identifier). Its volume average particle size is 23um. The material is mixed evenly with conductive materials such as pulverized graphite and acetylene black to form positive electrode powder. Stir the mixed positive electrode powder with the prepared binder to form a slurry, wherein the binder is prepared by dissolving SEBS (G1651 copolymer produced by Kraton company) in an organic solvent, organic The solvent is a mixed solvent composed of Shell A100 (aromatic hydrocarbon solvent) and Shell OMS (isoparaffin) purchased from S...

Embodiment 2

[0049] AA batteries were prepared in the manner shown in Example 1, the difference being that FeS in the positive electrode powder 2 Contains 80 wt% cubic p-type FeS 2 (purchased from Tongling Huajian Mineral Products Co., Ltd.), and the rest are basically pentagonal dodecahedral FeS 2 (Courtesy of Anwei Fude Chemical).

[0050] The resulting battery was named A2. Discharge was also carried out in the manner shown in Example 1, and the number of pulse discharges achieved by the battery at each voltage stage was investigated. The results are listed in Table 1.

Embodiment 3

[0052] AA batteries were prepared in the manner shown in Example 1, the difference being that FeS in the positive electrode powder 2 Contains 50 wt% cubic p-type FeS 2 (provided by Guangdong Yunfu Pyrite Group), and the rest are basically pentagonal dodecahedral FeS 2 (Provided by Anwei Fude Chemical)

[0053] The resulting battery was named A3. Discharge was also carried out in the manner shown in Example 1, and the number of pulse discharges achieved by the battery at each voltage stage was investigated. The results are listed in Table 1.

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Abstract

The present invention provides a lithium-iron disulfide battery, wherein the battery uses FeS2 as a positive electrode active material, and the positive electrode active material contains at least 50% by weight of cubic p-type FeS2. When the battery of the invention is used for discharging, long-term high-power discharge output can be realized, so as to reach a predetermined discharge capacity as much as possible.

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 cathode active material 2 )Battery. Background technique [0002] In the battery industry, lithium batteries have received more and more attention and attention due to their advantages such as high energy density, high voltage, wide operating temperature range, and long life. 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] In lithium batteries, lithium-iron disulfide batteries are a kind of FeS 2 It is a primary battery with positive electrode active material, metal Li as negative electrode active material and organic electrolyte as electrolyte. The voltage of the primary ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/052H01M4/58H01M10/0569H01M10/0568
CPCY02E60/122Y02E60/10
Inventor 张清顺赵洋常海涛林建兴
Owner FUJIAN NANPING NANFU BATTERY
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