Effect of boric acid on corrosion and electrochemical performance of Pb-0.08% Ca-1.1% Sn alloys containing Cu, As, and Sb impurities for manufacture of grids of lead-acid batteries

Said SALIH; Ahmed GAD-ALLAH; Ashraf ABD EL-WAHAB; Hamid ABD EL-RAHMAN

doi:https://doi.org/10.3906/kim-1212-76

Article Details

Effect of boric acid on corrosion and electrochemical performance of Pb-0.08% Ca-1.1% Sn alloys containing Cu, As, and Sb impurities for manufacture of grids of lead-acid batteries

Authors:

Said SALIH | Ahmed GAD-ALLAH | Ashraf ABD EL-WAHAB | Hamid ABD EL-RAHMAN

Publisher:

TUBITAK

Main Topics:

Chemistry and allied sciences

Journal:

Turkish Journal of Chemistry 2014 Vol.38 Issue 2, pp.260-274

Document Type:

Article

Publication Date:

5/2014

Document Language:

English

Document ID (Org No.):

2000727214

Frequency:

Bimonthly

eISSN:

1303-6130

pISSN:

1300-0527

DOI:

https://doi.org/10.3906/kim-1212-76

Abstract:

 

The electrochemical performance of lead-acid batteries made of Pb--Ca--Sn  alloys with and without 0.1% of each of Cu, As, and Sb individually and  combined in 4.0 M H2SO4 in the absence and presence of 0.4 M  H3BO3 was studied. Both impurities and H3BO3 were found  to reduce the corrosion rate. Cyclic voltammetry revealed that the presence  of impurities or H3BO3 significantly retarded the formation of  large crystal PbSO4. H3BO3 increased the rates of oxygen and  hydrogen evolution reactions for all alloys. Impedance measurement was used  to quantify the amounts of PbSO4 and PbO in the initial stage of the  oxidation. H3BO3 decreased the positive grid corrosion of all  alloys, while impurities increased it. Although impurities increased the  self-discharge during constant current discharge, H3BO3 was  found to decrease it, except for the alloy containing the 3 impurities and  the Cu-containing alloy. Under open-circuit conditions, H3BO3  increased significantly the self-discharge rate, but impurities were found  to suppress it.

 

The electrochemical performance of lead-acid batteries made of Pb--Ca--Sn  alloys with and without 0.1% of each of Cu, As, and Sb individually and  combined in 4.0 M H2SO4 in the absence and presence of 0.4 M  H3BO3 was studied. Both impurities and H3BO3 were found  to reduce the corrosion rate. Cyclic voltammetry revealed that the presence  of impurities or H3BO3 significantly retarded the formation of  large crystal PbSO4. H3BO3 increased the rates of oxygen and  hydrogen evolution reactions for all alloys. Impedance measurement was used  to quantify the amounts of PbSO4 and PbO in the initial stage of the  oxidation. H3BO3 decreased the positive grid corrosion of all  alloys, while impurities increased it. Although impurities increased the  self-discharge during constant current discharge, H3BO3 was  found to decrease it, except for the alloy containing the 3 impurities and  the Cu-containing alloy. Under open-circuit conditions, H3BO3  increased significantly the self-discharge rate, but impurities were found  to suppress it.

Article Details

Effect of boric acid on corrosion and electrochemical performance of Pb-0.08% Ca-1.1% Sn alloys containing Cu, As, and Sb impurities for manufacture of grids of lead-acid batteries

Authors: Said SALIH | Ahmed GAD-ALLAH | Ashraf ABD EL-WAHAB | Hamid ABD EL-RAHMAN

Publisher: TUBITAK

Main Topics: Chemistry and allied sciences

Journal: Turkish Journal of Chemistry 2014 Vol.38 Issue 2, pp.260-274

Document Type: Article

Publication Date: 5/2014

Document Language: English

Document ID (Org No.): 2000727214

Frequency: Bimonthly

eISSN: 1303-6130

pISSN: 1300-0527

DOI: https://doi.org/10.3906/kim-1212-76

Issues

Authors:

Said SALIH | Ahmed GAD-ALLAH | Ashraf ABD EL-WAHAB | Hamid ABD EL-RAHMAN

Publisher:

TUBITAK

Main Topics:

Chemistry and allied sciences

Journal:

Turkish Journal of Chemistry 2014 Vol.38 Issue 2, pp.260-274

Document Type:

Article

Publication Date:

5/2014

Document Language:

English

Document ID (Org No.):

2000727214

Frequency:

Bimonthly

eISSN:

1303-6130

pISSN:

1300-0527

DOI:

https://doi.org/10.3906/kim-1212-76