Saravanan, M. and Ganesan, M. and Ambalavanan, S. (2014) An in situ generated carbon as integrated conductive additive for hierarchical negative plate of lead-acid battery. Journal of Power Sources, 251. pp. 20-29. ISSN 0378-7753

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Abstract

In this work, we report an in situ generated carbon from sugar as additive in the Negative Active Mass (NAM) which enhances the chargeedischarge characteristics of the lead-acid cells. In situ formed sugar derived carbon (SDC) with leady oxide (LO) provides a conductive network and excellent protection against NAM irreversible lead sulfation. The effect of SDC and carbon black (CB) added negative plates are characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), galvanostatic chargeedischarge, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), respectively. The results show that subtle changes in the addition of carbon to NAM led to subsequent changes on the performance during partial-state-of-charge (PSoC) operations in lead-acid cells. Furthermore, SDC added cells exhibit remarkable improvement in the rate capability, active material utilization, cycle performance and charge acceptance compared to that of the conventional CB added cells. The impact of SDC with LO at various synthesis conditions on the electrochemical performance of the negative plate is studied systematically.

Item Type:	Article
Uncontrolled Keywords:	Carbon, Lead-acid battery, Partial-state-of-charge, Negative plate sulfation, Cycle-life
Subjects:	Electrochemical Power Sources
Divisions:	UNSPECIFIED
Depositing User:	Dr. N Meyyappan
Date Deposited:	30 Dec 2013 11:51
Last Modified:	30 Dec 2013 11:51
URI:	http://cecri.csircentral.net/id/eprint/3048

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