Electroplated reticulated vitreous carbon current collectors for lead–acid batteries: opportunities and challenges

详细信息    查看全文

• 作者：Gyenge ; Elod ; Jung ; Joey ; Mahato ; Basanta
• 关键词：Lead&ndash ; acid battery ; Current collector ; Reticulated vitreous carbon ; Electroplating
• 刊名：Journal of Power Sources
• 出版年：2003
• 出版时间：January 27, 2003
• 年：2003
• 卷：113
• 期：2
• 页码：388-395
• 全文大小：365 K

文摘

Reticulated, open-cell structures based on vitreous carbon substrates electroplated with a Pb–Sn (1wt. % ) alloy were investigated as current collectors for lead–acid batteries. Scanning and backscattered electron microscopy, cyclic voltammetry, anodic polarization and flooded 2V single-cell battery testing was employed to characterize the performance of the proposed collectors. A battery equipped with pasted electroplated reticulated vitreous carbon (RVC) electrodes of 137cm² geometric area, at the time of manuscript submission, completed 500cycles and over 1500h of continuous operation. The cycling involved discharges at 63Akg_PAM⁻¹ corresponding to a nominal 0.75h rate and a positive active mass (PAM) utilization efficiency of 21 % . The charging protocol was composed of two voltage limited (i.e. 2.6V/cell), constant current steps of 35 and 9.5Akg_PAM⁻¹, respectively, with a total duration of about 2h. The charge factor was 1.05–1.15. The observed cycling behavior in conjunction with the versatility of electrodeposition to produce application-dependent optimized lead alloy coating thickness and composition shows promise for the development of lead–acid batteries using electroplated reticulated vitreous carbon collectors.