A lead-acid battery negative lead paste for suppressing hydrogen evolution and preparation method thereof

Abstract

The invention provides a lead-acid storage battery negative lead plaster capable of inhibiting hydrogen evolution and a preparation method. The technical scheme of the lead-acid storage battery negative lead plaster is as follows: the lead plaster is prepared from the following solid raw materials in parts by weight: 100 parts of lead powder, 1-3 parts of carbon source, 0.15-1.0 part of zinc source, 0.3-2 parts of barium sulfate, 0.1-0.5 part of sodium lignosulfonate and 0.01-0.5 part of fibers. The lead-acid storage battery negative lead plaster provided by the invention is characterized in that a certain quantity of zinc-containing compounds and different types of carbon are added to the negative lead plaster, so that the grain size and the microstructure of the lead negative material are improved, and therefore, the purposes of increasing the capacity of a lead-acid battery, enhancing the ability of the battery to accept charging and improving the charge-discharge cycle stability of the battery are achieved. Tests indicate that the doping of the zinc compound in the negative lead plaster causes the hydrogen evolution potential at the cathode of a lead-acid storage battery to be more negative, so that the hydrogen evolution difficulty is increased, the hydrogen evoluted is reduced, the consumption amount of an electrolyte in the use process is reduced and the service life of the battery can be prolonged; and furthermore, the odds of unsafe accidents such as explosion and the like are reduced to a certain extent.

Description

technical field [0001] The invention relates to battery lead paste technology, in particular to lead-acid battery negative electrode lead paste for suppressing hydrogen evolution and a preparation method thereof, belonging to the technical field of storage batteries. Background technique [0002] The positive and negative plates are the most critical components of the lead-acid battery, and the quality of the positive and negative plates directly determines the discharge capacity and charge-discharge cycle life of the lead-acid battery. Although many new types of batteries represented by lithium batteries have emerged in recent years, lead-acid batteries still have other advantages in the fields of transportation, electric power, communications, computers, national defense, and railways due to their low price, safety, reliability, and stable performance. Type battery irreplaceable role. At present, people in the industry often dope the negative electrode paste with differen...

AI Technical Summary

Problems solved by technology

However, carbon doping will definitely shift the hydrogen evolution potential of the lead negative electrode positively, and a large amount of hydrogen may be precipitated during overcharging and high-current charging, increasing water consumption and increasing the possibility of unsafe events such as explosions.

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