CN1523694A - Negative pole lead plaster of lead-acid accumulator - Google Patents

Abstract

This invention discloses a lead paste used in lead-acid battery negative plate containing lignin, humic acid, oak powder and acetylene black with the following mixed ratio: lignin: 0.045~0.15(wt)%/kg lead powder, humic acid: 0.15~0.50(wt)%/kg lead powder, oak powder: 0.10~0.35(wt)%/kg lead powder, acetylene black 0.20~0.60(wt)%/kg lead powder, the best ratio is: lignin: 0.09~0.11(wt)%/kg lead powder, humic acid 0.25-0.35(wt)% lead powder, oak powder: 0.25~0.35(wt)%/kg lead powder, acetylene black: 0.40~0.45(wt)%/kg lead powder.

Description

Lead-acid accumulator negative pole lead paste

Technical field

The present invention relates to a kind of lead acid accumulator, relate more specifically to a kind of lead-acid battery negative pole plate lead plaster.

Technical background

At present, the lead-acid battery negative pole plate lead plaster generally all with lignosulphonates as organic expander, but lignosulphonates have a shortcoming, are exactly that it has bigger solubility in acid, can dissolving enter electrolyte and loss of function gradually in the storage battery running; Be exactly to make the charge acceptance of negative plate low in addition, make accumulator property in use the phase begin to descend, use the later stage sharply to descend, and then cause battery to shorten useful life.

Summary of the invention

The objective of the invention is to provide a kind of above-mentioned defective that overcomes, can newly fill a prescription with the lead plaster that lignin is used.The use of this prescription can remedy the shortcoming of single lignin composition lead plaster, improves the performance that storage battery uses the later stage, prolongs the life of storage battery.

The present invention realizes in the following manner: add compound additive in the cathode lead plaster prescription, this compound additive is formed and is comprised: lignin, humic acid, oak powder and acetylene black.General ratio range is:

Lignin: 0.045～0.15 (wt) %/kg lead powder,

Humic acid: 0.15～0.50 (wt) %/kg lead powder,

Oak powder: 0.10～0.35 (wt) %/kg lead powder,

Acetylene black: 0.20～0.60 (wt) %/kg lead powder.

Owing to adopt above-mentioned measure, the storage battery early failure phenomena that can solve the reduction of cathode lead plaster lignin activity in the storage battery use effectively and cause, humic acid, oak powder and acetylene black that adds and lignin are used jointly and have remedied the deficiency of lignin, make battery use the usefulness in later stage to improve, thereby prolong the useful life of storage battery, add after the compound additive, the charge acceptance of battery can improve 3～5%, and respective battery cycle life improves 10～20%.

Embodiment

The best proportioning of this invention is:

Lignin: 0.09～0.11 (wt) %/kg lead powder;

Humic acid: 0.25～0.35 (wt) %/kg lead powder;

Oak powder: 0.25～0.35 (wt) %/kg lead powder,

Acetylene black: 0.40～0.45 (wt) %/kg lead powder.

Claims (3)

1. the lead-acid battery negative pole plate lead plaster contains lead powder and compound additive, it is characterized in that this compound additive contains lignin, humic acid, oak powder and acetylene black.

2. lead-acid battery negative pole plate lead plaster as claimed in claim 1 is characterized in that the prescription of compound additive is:

Lignin: 0.045～0.15 (wt) %/kg lead powder,

Humic acid: 0.15～0.50 (wt) %/kg lead powder,

Oak powder: 0.10～0.35 (wt) %/kg lead powder,

Acetylene black: 0.20～0.60 (wt) %/kg lead powder.

3. as claim 1 or 2 described lead acid accumulator lead plasters, it is characterized in that the prescription of compound additive is:

Lignin: 0.09～0.11 (wt) %/kg lead powder;

Humic acid: 0.25～0.35 (wt) %/kg lead powder;

Oak powder: 0.25～0.35 (wt) %/kg lead powder,

Acetylene black: 0.40～0.45 (wt) %/kg lead powder.