Titanium dioxide-reduced graphene oxide hybrid as negative electrode additive for high performance lead-acid batteries

Vangapally, Naresh and Jindal, Swati and Gaffoor, S A and Martha, Surendra Kumar (2018) Titanium dioxide-reduced graphene oxide hybrid as negative electrode additive for high performance lead-acid batteries. Journal of Energy Storage, 20. pp. 204-212. ISSN 2352-152X

Full text not available from this repository. (Request a copy)

Abstract

Sulfation at the negative electrode is one of the major failure modes of lead-acid batteries. To overcome the issues of sulfation, we herein report solvothermal synthesis of titanium dioxide- reduced graphene oxide hybrid as negative electrode additive in lead acid cell. The presence of titanium dioxide-reduced graphene oxide hybrid additive (0.5 wt. %) provides high interfacial stability, slows down hard sulfation, high active material utilization by occupying pores on the negative plate. 0.5 wt. % of titanium dioxide-reduced graphene oxide hybrid (3:1 wt. ratio) additive to the negative active mass delivers 85% increase in capacity during the first formation cycle, and thereby increases the formation efficiency from 3 cycles to 1 cycle; >20% and ∼200% increase in capacity at low discharge rates of C/20 and high rates of discharge (2C), respectively as compare to conventional lead acid cell. Besides, 3:1 wt. ratio titanium dioxide-reduced graphene oxide hybrid additive cells show ∼200% increase in high rate partial state of charge cycle life in relation to conventional cell. Titanium dioxide-reduced graphene oxide hybrid additives to the negative active mass provides increase in conductivity, controls the crystallization of lead sulphate growth, acts as a capacitor, decreases the hydrogen evolution and hence enhances the electrochemical performance.

[error in script]
IITH Creators:
IITH CreatorsORCiD
Martha, Surendra KumarUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: TiO2-RGO hybrid, Negative electrode additive, Sulfation, HRPSoC, Cycle-life, Lead acid, cell
Subjects: Chemistry
Divisions: Department of Chemistry
Depositing User: Team Library
Date Deposited: 09 Oct 2018 08:31
Last Modified: 09 Oct 2018 08:31
URI: http://raiith.iith.ac.in/id/eprint/4470
Publisher URL: http://doi.org/10.1016/j.est.2018.09.015
OA policy: http://www.sherpa.ac.uk/romeo/issn/2352-152X/
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 4470 Statistics for this ePrint Item