A kind of preparation method and application of pure inorganic colloid

A technology of inorganic glue and colloid, which is applied in the direction of solid electrolyte, electrolyte immobilization/gelation, electrolyte, etc., can solve the problems that the normal operation of power equipment cannot be guaranteed, the polymer cannot withstand high temperature, and the battery temperature rises. Achieve the effect of maintaining ion transmission ability and solving high temperature stability problems

Active Publication Date: 2021-07-13
HANGZHOU GAOXI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing hydrogels are composed of polymers, which cannot withstand high temperatures, and the operation of the battery usually leads to an increase in the temperature of the battery. Therefore, the existing polymer-based hydrogels cannot guarantee Normal operation of electrical equipment

Method used

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  • A kind of preparation method and application of pure inorganic colloid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Add 0.2mol zinc chloride, 0.2mol zinc bromide and 0.2mol zinc acetate to 10g deionized water in sequence, heat to 120°C to dissolve, and naturally cool to room temperature to obtain a total concentration of 60mol kg -1 Zinc chloride-zinc bromide-zinc acetate aqueous colloid.

[0016] (2) Gained colloid is placed in a glass bottle, and it can be seen that there is no fluidity after inversion, see figure 1 , so it can be known that it has properties similar to hydrogels.

[0017] (3) Add 0.2mol of zinc chloride, 0.2mol of zinc bromide and 0.2mol of zinc acetate into 10g of deionized water in sequence, heat to 120°C to dissolve, pour the flowable mixed system on the polytetrafluoroethylene film, and Cover the second layer of polytetrafluoroethylene film, press an iron block, and cool to obtain a gelatinous sheet with a thickness of 0.1 mm.

[0018] Its conductivity measured at room temperature is 10 -3 S m -1 . The conductivity measured at 100°C is 2×10 -3 S m -...

Embodiment 2

[0022] (1) Add 0.3mol zinc chloride, 0.3mol zinc bromide and 0.4mol zinc acetate to 10g deionized water in sequence, heat to 130°C to dissolve, and naturally cool to room temperature to obtain a total concentration of 100mol kg -1 Zinc chloride-zinc bromide-zinc acetate aqueous colloid.

[0023] (2) The obtained jelly was placed in a glass bottle, and no fluidity was seen after inversion.

[0024] (3) Add 0.3mol zinc chloride, 0.3mol zinc bromide and 0.4mol zinc acetate to 10g deionized water in turn, heat to 130°C to dissolve, pour the flowable mixed system on the polytetrafluoroethylene film, and Cover the second layer of polytetrafluoroethylene film, press an iron block, and cool to obtain a gelatinous sheet with a thickness of 0.1mm. Its conductivity measured at room temperature is 10 -4 S m -1 . The conductivity measured at 100°C is 2*10 -4 S m -1 . Test method is the same as embodiment 1.

[0025] (4) The zinc negative electrode, the colloidal sheet and the graph...

Embodiment 3

[0027] (1) Add 0.2mol of zinc chloride, 0.2mol of zinc bromide and 0.2mol of zinc acetate to 10g of deionized water in sequence, heat to 120°C to dissolve, and naturally cool to room temperature to obtain a total concentration of 60mol kg -1 Zinc chloride-zinc bromide-zinc acetate aqueous colloid.

[0028] (2) Put the obtained jelly in a glass bottle, and it can be seen that there is no fluidity after inversion.

[0029] (3) Add 0.2mol of zinc chloride, 0.2mol of zinc bromide and 0.2mol of zinc acetate into 10g of deionized water in sequence, heat to 120°C to dissolve, pour the flowable mixed system on the polytetrafluoroethylene film, and Cover the second layer of polytetrafluoroethylene film, press an iron block, and cool to obtain a gelatinous sheet with a thickness of 0.1mm. Its conductivity measured at room temperature is 10 -3 S m -1 . The conductivity measured at 100°C is 2*10 -3 S m -1 . Test method is the same as embodiment 1.

[0030] (4) The titanium foil cu...

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Abstract

The invention discloses a preparation method of pure inorganic colloid, which is obtained by dissolving zinc chloride, zinc bromide and zinc acetate in water. The system has properties not possessed by any single component. The total solubility is extremely high, higher than a single zinc chloride, zinc bromide or zinc acetate, the total concentration can be adjusted, up to 100mol kg ‑1 . The system is in a hydrogel-like state with ionic conductivity (10 ‑3 S m ‑1 ), maintains high conductivity at high temperature, and can be used as an electrolyte for gel batteries. Using graphite carbon material as the positive electrode, metal zinc, zinc-containing alloy or other inert metal as the negative electrode, and using the colloid as the electrolyte to assemble a battery, the positive electrode specific capacity can reach 100mAh g ‑1 . The system is simple in preparation, low in cost and unique in properties, and has broad application prospects in energy storage and other fields.

Description

technical field [0001] The invention relates to a preparation method of a pure inorganic colloid. The pure inorganic colloid can work stably at high temperature and is especially suitable for the battery field. Background technique [0002] Hydrogel is a dispersed system formed by the absorption of water by the space network skeleton. Hydrogels are flexible and have excellent mechanical properties, making them suitable for applications in many fields. Generally, hydrogels can be provided with ion conductivity by introducing salts. Hydrogels with ion conductivity can be used as electrolytes in the field of energy storage, especially in flexible energy storage devices. [0003] However, the existing hydrogels are composed of polymers, which cannot withstand high temperatures, and the operation of the battery usually leads to an increase in the temperature of the battery. Therefore, the existing polymer-based hydrogels cannot guarantee normal operation of electrical equipmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0562
CPCH01M10/0562H01M2300/0068H01M2300/0085H01M2300/0091Y02E60/10
Inventor 高超褚星远
Owner HANGZHOU GAOXI TECH CO LTD
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