Method for preparing anode material of lithium-iron disulphide battery

A technology for iron disulfide batteries and positive electrode materials, which is applied to iron sulfide, battery electrodes, circuits, etc. It can solve the problems of unsuitable lithium-iron disulfide positive electrode material preparation and cumbersome methods, and achieve great application value and simple process flow , Composite uniform effect

Inactive Publication Date: 2006-10-11
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese invention patents CN1624196 and CN1387265 disclose the preparation method of iron disulfide, but the method is cumbersome and not suitable for the preparation of lithium-iron disulfide cathode material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment one. mix by 1% carbon black, 55% sodium thiosulfate, 40% ferrous sulfate and 4% sulfur, place in the hydrothermal kettle, add an amount of water, the quality of water and compound The ratio is 1.0. Heat to 200°C and hold for 48 hours. After cooling, filter. Finally, water, dilute sulfuric acid, CS 2 Washing is performed to obtain C / FeS 2 Composite cathode material.

Embodiment 2

[0015] Embodiment two. mix by 3% carbon black, 40% sodium thiosulfate, 47% ferrous sulfate and 10% sulfur, place in the hydrothermal kettle, add an amount of water, the quality of water and compound The ratio is 0.5. Heat to 90°C and hold for 24 hours. After cooling, filter. Finally, water, dilute sulfuric acid, CS 2 Washing is performed to obtain C / FeS 2 Composite cathode material.

Embodiment 3

[0016] Embodiment three. Mix by 10% carbon black, 49% sodium thiosulfate, 40% ferrous sulfate and 1% sulfur, place in a hydrothermal kettle, add an amount of water, the quality of water and mixture The ratio is 2.0. Heat to 150°C and hold for 10 hours. After cooling, filter. Finally, water, dilute sulfuric acid, CS 2 Washing is performed to obtain C / FeS 2 Composite cathode material.

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Abstract

The invention relates to a method for preparing anode material of lithium-iron disulphide battery by using conductive carbon material, natrium thiosulfuricum, ferrous sulfate and elemental sulfur as raw material through low temperature hydrothermal reaction. The formulation of the anode material comprises, conductive carbon material 0.5-10%, natrium thiosulfuricum 40-70%, ferrous sulphate 40-70%, and elemental sulfur 1-10%.

Description

technical field [0001] The invention relates to a preparation method of a lithium-iron disulfide battery cathode material, belonging to the technical field of new materials. Background technique [0002] Lithium-iron disulfide battery is a high-energy, light-weight, and environmentally friendly primary lithium battery with a working voltage of 1.5V. It can be used interchangeably with alkaline-manganese batteries, nickel-metal hydride, nickel-cadmium, and zinc-silver batteries. Its discharge platform is stable and its storage life is long. , Excellent safety performance. The theoretical capacity of iron disulfide, the positive electrode material of the battery, is 890mAh / g, and the capacity of a single AA (No. 5) battery is higher than 3000mAh. Especially when used in heavy load applications, its performance is 4 to 10 times that of ordinary batteries. At present, it is mainly used in electrical appliances such as digital cameras, MP3, PDAs, handheld game consoles, portable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/12H01M4/58
CPCY02E60/10
Inventor 蒲薇华何向明王莉任建国李建军姜长印万春荣
Owner TSINGHUA UNIV
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