Battery performance enhancement with additions of bismuth

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Battery performance enhancement with additions of bismuth

Manders, J.E. / Lam, L.T. / De Marco, R. / Douglas, J.D. / Pillig, R. / Rand, D.A.J.

Automotive and valve-regulated batteries (VRBs) of typical commercial design have been constructed using positive and negative plates produced from leady oxide that is doped with 0.06 wt.% bismuth. The doping is performed by adding bismuth (III) oxide powder during the paste-mixing stage. Both battery designs have been subjected to endurance tests (automotive batteries: Japanese Industrial Standard (JIS) cycle-life test; VRBs: repetitive 3-h discharge) in parallel with batteries that are similar in all respects but do not contain bismuth. A strategy and necessary hardware have been developed to measure the gassing properties of the VRBs during both charge and discharge. The procedure involves monitoring the internal pressure with high-precision pressure transducers. For automotive batteries, doping with bismuth produces no significant differences in JIS cycle life. By contrast, both the endurance and the capacity of VRBs are found to be enhanced by the presence of bismuth. Furthermore, bismuth reduces the build-up in gas pressure (mainly oxygen) in VRBs during constant-current charging. These results suggest that future specifications for leady oxide should include a minimum-rather than a maximum-bismuth content. In this respect, although studies performed to date show that significant advantages can be achieved with 0.06 wt.% bismuth in the active material, the optimum bismuth level has yet to be established

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Dokumentinformationen

Titel :

Battery performance enhancement with additions of bismuth

Weitere Titelangaben:

Verbesserung der Leistungsfähigkeit von Bleiakkumulatoren durch wismutdotierte Bleioxidplatte

Beteiligte:

Manders, J.E. (Autor:in) / Lam, L.T. (Autor:in) / De Marco, R. (Autor:in) / Douglas, J.D. (Autor:in) / Pillig, R. (Autor:in) / Rand, D.A.J. (Autor:in)

Erschienen in:

Asian Battery Conference, 5 ; 113-128

Journal of Power Sources ; 48 , 1-2

Erscheinungsdatum :

1994

Format / Umfang :

16 Seiten, 21 Quellen

ISSN :

0378-7753

DOI :

https://doi.org/10.1016/0378-7753(94)80012-X

Medientyp :