A positive electrode of lithium-thionyl chloride energy type battery and its preparation method and lithium-thionyl chloride energy type battery

A thionyl chloride, energy-based technology, applied in the field of lithium-thionyl chloride energy-based batteries, can solve the problems of large differences in electrical performance and battery environmental adaptability to be improved, and achieve heat reduction, high oil absorption value, and increase output The effect of capacity

Active Publication Date: 2021-11-16
武汉中原长江科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to incomplete statistics, ER14 / ER18, the battery model with a small diameter, the horizontal discharge capacity of the battery is about 90% of the vertical discharge capacity; ER34, the battery model with a large diameter, the battery horizontal discharge output capacity is about The discharge capacity is 80% of the output capacity. The larger the discharge current, the output capacity of the battery is about 70% of the output capacity of the upright discharge.

Method used

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  • A positive electrode of lithium-thionyl chloride energy type battery and its preparation method and lithium-thionyl chloride energy type battery

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Embodiment 1

[0031] This embodiment provides a positive electrode of a lithium-thionyl chloride energy battery, the positive electrode material comprises acetylene black, 60wt% polytetrafluoroethylene emulsion, conductive carbon black super-p, absolute ethanol, and deionized water, wherein The weight ratio of the acetylene black, polytetrafluoroethylene emulsion, conductive carbon black super-p, absolute ethanol and deionized water is 10:2.1:0.8:15:32.

[0032] The conductive carbon black super-p is ultrasonically treated with acetone in advance, then dried, and passed through a 20-mesh sieve. The conductive carbon black super-p is in powder form, with a particle diameter of 40nm-60nm. The iodine absorption value of conductive carbon black super-p is 50mg / g~70mg / g, and the oil absorption value is 280ml / 100g~330ml / 100g.

[0033] This embodiment also provides a preparation method for the positive electrode of the lithium-thionyl chloride battery, comprising the following steps:

[0034] 1)...

Embodiment 2

[0041] This embodiment provides a positive electrode of a lithium-thionyl chloride energy battery, the positive electrode material comprises acetylene black, 60wt% polytetrafluoroethylene emulsion, conductive carbon black super-p, absolute ethanol, and deionized water, wherein The weight ratio of the acetylene black, polytetrafluoroethylene emulsion, conductive carbon black super-p, absolute ethanol and deionized water is 10:1.8:1.0:18:28.

[0042] The conductive carbon black super-p is ultrasonically treated with acetone in advance, then dried, and passed through a 20-mesh sieve. The conductive carbon black super-p is in powder form, with a particle diameter of 40nm-60nm. The iodine absorption value of conductive carbon black super-p is 50mg / g~70mg / g, and the oil absorption value is 280ml / 100g~330ml / 100g.

[0043] This embodiment also provides a preparation method for the positive electrode of the lithium-thionyl chloride battery, comprising the following steps:

[0044] 1)...

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Abstract

The invention discloses a positive electrode of a lithium-thionyl chloride energy type battery, a preparation method thereof and a lithium-thionyl chloride energy type battery. The carbon positive electrode is composed of acetylene black, polytetrafluoroethylene emulsion, new carbon material and solvent, and the mass ratio of the acetylene black, polytetrafluoroethylene emulsion, new carbon material and solvent is 10:(1.8~2.1):(0.8 ~1.0): (45.5~48), the carbon positive electrode is prepared by mixing acetylene black, polytetrafluoroethylene emulsion, new carbon material and solvent with a low-speed three-dimensional mixer, granulating and drying. The lithium-thionyl chloride energy type battery carbon positive electrode prepared by the invention has improved liquid absorption and liquid retention capacity, effectively solves the capacity difference problem caused by the horizontal and inverted electrolyte flow differences of the battery, and improves the environmental adaptability of the battery.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a positive electrode of a lithium-thionyl chloride energy type battery with high liquid absorption and high liquid retention, a preparation method thereof, and a lithium-thionyl chloride energy type battery. Background technique [0002] Due to the high working voltage (3.6V) of lithium-thionyl chloride battery, the working voltage is stable (90% capacity is output on the same platform), the storage life is long (over 10 years), and the operating temperature range is wide (-40℃~+85℃ ), are widely used in civil low-power industrial equipment such as smart water meters, electric meters, gas meters, and oil exploration, and are widely used in backup power supplies for military equipment such as smart mine bombs, communications, and underwater weapons. [0003] The negative electrode active material of the lithium-thionyl chloride battery is metal lithium, the positive electrode active mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/06H01M4/62H01M4/08H01M6/14
CPCH01M4/06H01M4/08H01M4/625H01M6/14
Inventor 冯姗张志东吴铭刘芬刘玮周玉霞许璨
Owner 武汉中原长江科技发展有限公司
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