Enhanced cycle performance and lifetime estimation of lead-acid batteries. (27th April 2018)

• Record Type: Journal Article
• Authors: Yang, Shaoqiang; Li, Ruhong; Cai, Xianyu; Xue, Kuiwang; Yang, Baofeng; Hu, Xinguo; Dai, Changsong
• Is Part Of: New journal of chemistry. Volume 42:Number 11(2018)
• Page Start: 8900
• Page End: 8904
• Publication Date: 2018-04-27
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c8nj00542g
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : In this study, we introduce a method to estimate the cycle life of lead–acid battery by analyzing the parameter of index of reaction depth. Abstract : Lead-acid batteries are preferred for energy storage applications because of their operational safety and low cost. However, the cycling performance of positive electrode is substantially compromised because of fast capacity decay caused by softening and shedding of the positive active material (PAM). The additives of PAM are considered as promising candidates to improve the cycling performance of a PbO2 electrode. In this study, SnSO4 and Sb2 O3 are selected as additives to form positive plates. The incorporation of SnSO4 (0.1 wt%) and Sb2 O3 (0.1 wt%) not only provides high porosity of PAM for ion and H2 O transportation, but also offers larger reaction area during electrochemical processes. Therefore, excellent cycling performances are achieved at 40% and 60% depth of discharge (DoD). Meanwhile, the index of reaction depth (IRD), a parameter reflecting the state of a battery, is also obtained, and the IRD measurements can be used to predict the capabilities for cycling performances of lead-acid batteries.