Preparation method of high-reliability bipolar plate for bipolar lead storage battery

A lead-acid battery and reliability technology, applied in the field of bipolar plate preparation, can solve the problem of weak bonding between the substrate and the active material, and achieve the effects of high reliability and high corrosion resistance

Active Publication Date: 2016-05-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problem that the substrate and the active material are not firmly combined in the exis...

Method used

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  • Preparation method of high-reliability bipolar plate for bipolar lead storage battery
  • Preparation method of high-reliability bipolar plate for bipolar lead storage battery
  • Preparation method of high-reliability bipolar plate for bipolar lead storage battery

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specific Embodiment approach 1

[0023] Specific embodiment one: a kind of preparation method of the high-reliability bipolar plate that is used for bipolar lead-acid storage battery described in this embodiment is specifically carried out according to the following steps:

[0024] 1. Pretreatment:

[0025] The titanium plate is degreased and pickled sequentially to obtain the pretreated titanium plate;

[0026] 2. Honeycombing on the surface of titanium plate:

[0027] The titanium mesh coated with ruthenium oxide is used as the anode, the pretreated titanium plate is used as the cathode, and then the titanium mesh anode coated with ruthenium oxide and the pretreated titanium plate cathode are placed in the honeycomb treatment solution at a temperature of 80 ° C ~90℃ and current density 5A / dm 2 ~20A / dm 2 Under the conditions of 10s ~ 20s, and then at a temperature of 80 ℃ ~ 90 ℃ and a current density of 0.5A / dm 2 ~2A / dm 2 Under certain conditions, treat for 10-30 minutes, take out the titanium plate aft...

specific Embodiment approach 2

[0035] Embodiment 2: This embodiment differs from Embodiment 1 in that: the thickness of the titanium plate described in step 1 is 0.1 mm to 0.5 mm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0036]Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the degreasing and pickling described in step 1 are carried out according to the following steps: immerse the titanium plate in a temperature range of 60° C. to 70° C. In the degreasing solution at ℃, the immersion time is 10min~30min to obtain the degreased titanium plate. At room temperature, immerse the degreased titanium plate in the pickling solution for 1min~2min to obtain the pretreated titanium plate;

[0037] The degreasing liquid is composed of sodium carbonate, sodium phosphate and sodium silicate; the concentration of sodium carbonate in the degreasing liquid is 35g / L~45g / L; the concentration of sodium phosphate in the degreasing liquid is 45g / L~55g / L; the concentration of sodium silicate in the degreasing liquid is 20g / L~30g / L;

[0038] The pickling liquid is composed of 42% hydrofluoric acid, 65% concentrated nitric acid and 30% hydrogen peroxide by mass percentage; 42% hydr...

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Abstract

The invention discloses a preparation method of a high-reliability bipolar plate for a bipolar lead storage battery, and relates to the preparation method of the bipolar plate for a bipolar lead storage battery. The problem that a substrate and an active substance cannot be firmly bonded in a conventional bipolar lead storage battery is solved. The preparation method comprises: 1, pre-treatment; 2, titanium plate surface honeycombing; 3, preferred growth of a lead-tin alloy layer through electroplating; and 4, preparation of the high-reliability bipolar plate. The method is applied to preparation of the high-reliability bipolar plate for a bipolar lead storage battery.

Description

technical field [0001] The present invention relates to a method for preparing bipolar plates for bipolar lead storage batteries. Background technique [0002] Compared with traditional lead-acid batteries, bipolar lead-acid batteries have higher specific energy and specific power, longer cycle life, and lead saving of more than 40%, which can realize energy saving, consumption reduction, and emission reduction in the lead-acid battery industry. It is used in energy storage and electric vehicles. The field has a good application prospect. At present, the key problem of the inability to realize the industrialization of bipolar lead-acid batteries is that the substrate in the bipolar plate is not firmly combined with the active material, which leads to poor reliability of the bipolar plate and cannot realize large-scale production. Contents of the invention [0003] The invention solves the problem that the substrate and the active material are not firmly combined in the ex...

Claims

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Application Information

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IPC IPC(8): H01M4/20H01M4/82H01M4/66H01M4/76
CPCH01M4/20H01M4/662H01M4/667H01M4/762H01M4/82H01M2004/029Y02E60/10
Inventor 王殿龙王飞袁玉和罗浩
Owner HARBIN INST OF TECH
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