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Lead-acid storage battery electrolyte and preparation method thereof

A lead-acid battery and a preparation method technology, applied in lead-acid battery, lead-acid battery construction, acid electrolyte and other directions, can solve the problems of limited solubility, limited battery life, instability, etc., and achieve strong suppression ability and prolong life. , the effect of prolonging the cycle life

Active Publication Date: 2018-09-21
ZIBO VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the additive contains a large amount of organic matter, is unstable in the electrolyte of lead-acid batteries, and has limited solubility in the electrolyte, so the improvement of the service life of the battery is very limited.

Method used

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  • Lead-acid storage battery electrolyte and preparation method thereof
  • Lead-acid storage battery electrolyte and preparation method thereof
  • Lead-acid storage battery electrolyte and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Described electrolyte mother liquor is made from the raw material of following parts by weight:

[0041]

[0042] Described additive is made from the raw material of following parts by weight:

[0043] 2.5 parts of hydroxyethyl cellulose;

[0044] 0.3 parts of carboxymethyl chitosan;

[0045] 0.3 parts of silicon dioxide whiskers;

[0046] The dosage of the additive is 10% of the mass of the electrolyte mother liquor.

[0047] The mass concentration of described sulfuric acid is 75%.

[0048] The particle size of the nano fumed silicon dioxide is 25-40nm.

[0049] The silicon dioxide whiskers have a diameter of 0.1-0.5 μm and a length of 0.1-2 μm.

[0050] Its preparation method is as follows:

[0051] (1) Preparation of electrolyte mother liquor:

[0052] a. Add 36 parts of deionized water to the stirred tank, add nano fumed silica in batches, and stir to obtain the silica mother liquor;

[0053] B, add remaining deionized water in stirring kettle, add potas...

Embodiment 2

[0060] Described electrolyte mother liquor is made from the raw material of following parts by weight:

[0061]

[0062] Described additive is made from the raw material of following parts by weight:

[0063] 3 parts of hydroxyethyl cellulose;

[0064] 0.1 part of carboxymethyl chitosan;

[0065] Silica whiskers 0.1 part;

[0066] The dosage of the additive is 8% of the mass of the electrolyte mother liquor.

[0067] The mass concentration of described sulfuric acid is 70%.

[0068] Described nano fumed silica and silica whiskers are the same as in Example 1.

[0069] Its preparation method is as follows:

[0070](1) Preparation of electrolyte mother liquor:

[0071] a. Add 45 parts of deionized water to the stirred tank, add nano fumed silica in batches, and stir to obtain the silica mother liquor;

[0072] B, add remaining deionized water in stirring kettle, add potassium sulfate, magnesium sulfate, stannous sulfate, lithium sulfate and cerium sulfate, add sulfuric...

Embodiment 3

[0079] Described electrolyte mother liquor is made from the raw material of following parts by weight:

[0080]

[0081] Described additive is made from the raw material of following parts by weight:

[0082] 2 parts of hydroxyethyl cellulose;

[0083] 0.5 parts of carboxymethyl chitosan;

[0084] 0.5 parts of silicon dioxide whiskers;

[0085] The dosage of the additive is 12% of the mass of the electrolyte mother liquor.

[0086] The mass concentration of the sulfuric acid is 80%.

[0087] Described nano fumed silica and silica whiskers are the same as in Example 1.

[0088] Its preparation method is as follows:

[0089] (1) Preparation of electrolyte mother liquor:

[0090] a. Add 30 parts of deionized water to the stirred tank, add nano fumed silica in batches, and stir to obtain a silica mother liquor;

[0091] B, add remaining deionized water in stirring kettle, add potassium sulfate, magnesium sulfate, stannous sulfate, lithium sulfate and cerium sulfate, add ...

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Abstract

The invention belongs to the technical field of lead-acid storage batteries and particularly relates to a lead-acid storage battery electrolyte and a preparation method thereof. The electrolyte is prepared from an electrolyte mother solution and an additive, wherein the electrolyte mother solution is prepared from the following raw materials in parts by weight: 45-50 parts of sulfuric acid, 10-15parts of nano-fumed silica, 3-4 parts of potassium sulfate, 3-4 parts of magnesium sulfate, 0.3-0.5 part of stannous sulfate, 6-8 parts of lithium sulfate, 0.01-0.05 part of cerium sulfate and 80-100parts of deionized water; the additive is prepared from the following raw materials in parts by weight: 2-3 parts of hydroxyethyl cellulose, 0.1-0.5 part of carboxymethyl chitosan and 0.1-0.5 part ofsilica whisker; and the dosage of the additive is 8-12% of the mass of the electrolyte mother solution. The lead-acid storage battery electrolyte provided by the invention can prolong the cycle life of the storage battery to be 620 times or above; and the preparation method is scientific, reasonable, simple and easy.

Description

technical field [0001] The invention belongs to the technical field of lead-acid batteries, in particular to a lead-acid battery electrolyte and a preparation method thereof. Background technique [0002] Since the lead-acid battery was invented in 1859, it has a history of more than 150 years. Lead-acid batteries have the advantages of simple structure, stable performance, high safety, convenient use, easy access to raw materials, and low price. They are widely used in many fields of national economy such as transportation, communication, and national defense. Indispensable energy products in life. [0003] Although many new batteries are beginning to appear at present, lead-acid batteries still have an irreplaceable position in many fields. The five major components of a lead-acid battery are the positive electrode, the negative electrode, the diaphragm, the electrolyte, and the battery casing, among which the electrolyte is one of the main factors affecting battery perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/08H01M10/12B82Y30/00
CPCB82Y30/00H01M10/08H01M10/12H01M2300/0011Y02E60/10Y02P70/50
Inventor 董保香
Owner ZIBO VOCATIONAL INST