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Hydrogen Evolution Suppressant for Power Battery

A precipitation agent, lead-acid battery technology, applied in the direction of lead-acid battery, lead-acid battery construction, secondary battery gas removal, etc. obvious effect

Active Publication Date: 2016-09-07
ZIBO TORCH ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of a large amount of hydrogen precipitation in the later stage of the power storage battery, the invention provides a hydrogen storage inhibitor for the power storage battery. The invention reduces the hydrogen precipitation of the storage battery and improves the working safety of the lead-acid storage battery in a closed environment; the invention Does not affect the capacity of the battery, while effectively solving the self-discharge problem of the battery and improving the life of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 10L of dilute sulfuric acid (1.300g / mL, 30°C) and heat it to 42°C, then gradually add 30g of cerium sulfate, 170g of cadmium sulfate, 270g of β-naphthol and 400g of vanillin and fully stir and cool to room temperature. Adding the formulated product to a traction battery resulted in a 38.2% reduction in hydrogen evolution over 19 hypothetical weeks (4 months).

Embodiment 2

[0022] Take out 10L of dilute sulfuric acid (1.300g / mL, 30°C) and heat it to 40°C, then gradually add 130g of cerium sulfate, 180g of cadmium sulfate and 600g of vanillin, and fully stir and cool to room temperature. Adding the formulated product to a traction battery resulted in a 36.7% reduction in hydrogen evolution over 19 hypothetical weeks (4 months).

Embodiment 3

[0024] Take out 10L of dilute sulfuric acid (1.300g / mL, 30°C) and heat to 45°C, then gradually add 170g of cerium sulfate, 50g of cadmium sulfate and 600g of β-naphthol, and fully stir and cool to room temperature. Adding the formulated product to a traction battery resulted in a 35.4% reduction in hydrogen evolution over 19 hypothetical weeks (4 months).

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Abstract

The invention relates to the technical field of lead acid storage batteries, and particularly relates to a hydrogen precipitation inhibiting agent of a powered storage battery. The hydrogen precipitation inhibiting agent of the powered storage battery contains inorganic additives and organic additives, wherein the inorganic additives are cerous sulfate and cadmium sulfate, and the organic additives are at least one of beta-naphthol or vanillin. According to the invention, the hydrogen precipitation quantity of the storage battery is reduced; the working safety of the lead acid storage battery in an enclosed environment is improved; the capacity of the battery is not affected, and meanwhile the issue of self-discharge of the battery is solved effectively; the hydrogen precipitation inhibiting agent of the powered storage battery has the advantages of less dosage (only 1-20 per mill of the mass of the added electrolyte), obvious effect (35% of the battery hydrogen precipitation quantity can be reduced) and durable effect (19 durable supposed cycles, and more than 4 month in actual use), and the hydrogen precipitation inhibiting agent is a composite hydrogen precipitation inhibiting agent capable of greatly reducing the hydrogen precipitation quantity of the powered storage battery.

Description

technical field [0001] The invention relates to the technical field of lead-acid storage batteries, in particular to an agent for suppressing hydrogen evolution for power storage batteries. Background technique [0002] During the charging process of lead-acid batteries, when 90% of PbSO 4 After being reduced to the active material spongy lead, hydrogen gas begins to precipitate; but when there are impurities with low hydrogen overpotential (antimony, copper, iron, etc.) on the electrolyte or negative active material, hydrogen gas will precipitate in advance, making the battery The amount of hydrogen evolution increased sharply. [0003] The positive grid of the power battery is made of lead-antimony alloy. During the long-term charge and discharge process, the antimony on the positive electrode continues to migrate to the electrolyte and the negative electrode, resulting in an increase in the hydrogen evolution of the battery. Due to the special environment and conditions...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/52
CPCH01M10/12H01M10/4235H01M10/526Y02E60/10
Inventor 靳树峰徐加民战祥连吴涛丁广波刘记
Owner ZIBO TORCH ENERGY
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