Corrosion resistance and cycling behaviour of pure lead gravity cast thick plate AGM VRLA reserve power batteries

Muneret, X.; Gobe, V.; Partington, K.

doi:10.1109/intlec.2007.4448891

Cited by 2 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ageing was performed according to the EN-50342 standards for LABs: batteries in charged conditions were thermostated in water bath at 60 • C and overcharged at 2.4 V per cell for 21 and 42 d. The testing conditions are summarized in table 1, in which also the sample codes are provided. The rationale underlying this standard is that the electrochemical interaction between the spines and PAM determines battery performance and service life [10,25,27]. For completeness, a set of PPs in the same electrochemical conditions were also studied after mechanical removal of the PAM.…”

Section: Pp Fabrication and Electrochemical Ageingmentioning

confidence: 99%

Non-destructive analysis of Pb-acid battery positive plates, based on neutron tomography

Bozzini,

Cazzanti,

Hippoliti

et al. 2023

J. Phys. Energy

View full text Add to dashboard Cite

Notwithstanding the in-depth understanding of lead-acid battery degradation processes developed in a time-honored field of science, there is still wide scope for knowledge-based technological advancements, in particular, targeting positive plate (PP) durability. Non-destructive imaging of the internal morphology, structure and chemistry of these components, enabled by neutron-based methods, is capable of disclosing otherwise inaccessible observables, that can form the factual basis for new pathways to device improvement. In this study, we propose a post mortem investigation of as-formed and electrochemically aged PPs, centered on neutron tomography and complemented by x-ray radiography and scanning-electron microscopy. These complementary imaging methods, thriving on different contrast mechanisms, allow 2D/3D position-sensitive morphological analyses of the nature and evolution of the positive active material (PAM) and of the spines of the PP, including: morphology variation, crack location, porosity distribution and identification of hydrogenated compounds. Specifically, in this work, we have pinpointed the differences in degradation modes—resulting from the application of a standard ageing protocol—of PPs fabricated in two technologically alternative ways: punching and gravity-casting, showing the superiority of the formed in terms of electrode stability upon charging abuse conditions.

show abstract

Section: Pp Fabrication and Electrochemical Ageingmentioning

confidence: 99%