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Colloidal electrolyte and battery containing colloidal electrolyte

A technology of colloidal electrolyte and electrolyte salt, applied in water-based electrolytes, secondary batteries, circuits, etc., can solve the problems of difficult to perfuse batteries, affect the performance of batteries, and fast gelation of colloidal electrolytes, and achieve good water retention and strength, electrolyte salts The effect of uniform distribution and convenient perfusion

Inactive Publication Date: 2017-02-01
POSITEC POWER TOOLS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the current battery uses a liquid electrolyte, which is prone to side reactions with the positive and negative conductive agents, current collectors, etc., affecting the performance of the battery
One of the solutions is to replace the liquid electrolyte with a colloidal electrolyte, but the colloidal electrolyte has the problem of fast gelation and is difficult to pour into the battery

Method used

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  • Colloidal electrolyte and battery containing colloidal electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0082] The preparation process of the colloidal electrolyte includes: taking a certain amount of electrolyte salts zinc sulfate and lithium sulfate and dissolving them in solvent water to prepare an aqueous electrolyte A1 containing 2mol / L zinc sulfate and 1mol / L lithium sulfate.

[0083]Take 8mL of aqueous electrolyte A1, add 1mL of silica sol (solid content 30%), and 1mL of additive polystyrene sodium sulfonate aqueous solution (PSS, solid content 30%) to A1, and the mass percentage of PSS in the colloidal electrolyte is 3%.

[0084] Record the time T from the aqueous electrolyte to the colloidal electrolyte 1-1 .

Embodiment 1-2

[0086] In Example 1-2, take 8.67mL of aqueous electrolyte A1, add 1mL of silica sol (solid content 30%), and 0.33mL of additive sodium polystyrene sulfonate aqueous solution (solid content 30%) to A1, The mass percentage of PSS in colloidal electrolyte is about 1%. The rest of the colloidal electrolyte preparation process is the same as in Example 1-1.

[0087] Record the time T from the aqueous electrolyte to the colloidal electrolyte 1-2 .

Embodiment 1-3

[0089] In Example 1-3, take 9 mL of aqueous electrolyte A1, add 1 mL of silica sol (solid content 30%), and 0.05 mL of additive polystyrene sodium sulfonate aqueous solution (solid content 30%) to A1, PSS The mass percentage of colloidal electrolyte is about 0.15%. The rest of the colloidal electrolyte preparation process is the same as in Example 1-1.

[0090] Record the time T from the aqueous electrolyte to the colloidal electrolyte 1-3 .

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Abstract

The present invention discloses a colloidal electrolyte, which comprises: solvent water; an electrolyte salt, wherein the electrolyte salt can be ionized in a solvent to obtain cation and anion, the cation comprises first metal ion and second metal ion, the first metal ion can be reversibly removed-embedded at the positive electrode during a charging-discharging process, the second metal ion is subjected to reduction deposition at the negative electrode during a charging process to form a second metal, the second metal is oxidized and dissolved during the discharging process to form the second metal ion, and the anion is selected from sulfate ions or chloride ions; a gelling agent silica, wherein the gelling agent silica accounts for 1-10% of the weight of the colloidal electrolyte; and an additive, wherein the additive comprises at least one selected from poly sodium styrene sulfonate, alkyl sulfonate and borate. According to the present invention, the colloidal electrolyte is convenient to pour, and the battery processing technology is simple.

Description

technical field [0001] The invention belongs to the field of batteries, and in particular relates to a colloidal electrolyte. [0002] The invention also relates to a battery containing a colloidal electrolyte. Background technique [0003] Lead-acid batteries, which have been around for more than a hundred years, have mature battery technology and occupy an absolute market share in energy storage fields such as car starter batteries, electric bicycles, and UPS. Although the lead-acid battery has a low cycle life and a relatively low energy density, it has the advantages of very low price and high cost performance. Therefore, in recent years, nickel-metal hydride batteries, lithium-ion batteries, sodium-sulfur batteries, etc., cannot replace lead-acid batteries in the field of energy storage. [0004] A new type of aqueous battery based on internal ion exchange has emerged. The working principle of the battery is that the positive electrode is based on the extraction-inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/36
CPCH01M10/36H01M2300/0002Y02E60/10
Inventor 刘洋罗小松杨秀滔陈璞
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD
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