Polypyrrole-MoS2 Nanopetals as Efficient Anode Material for Lead-Based Hybrid Ultracapacitors

Muduli, Sadananda and Naresh, Vangapally and Pati, Subir K. and Duary, Subrata and Martha, Surendra K. (2021) Polypyrrole-MoS2 Nanopetals as Efficient Anode Material for Lead-Based Hybrid Ultracapacitors. Journal of The Electrochemical Society, 168 (5). 050523. ISSN 0013-4651

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Abstract

Lead-carbon hybrid ultracapacitors are being a solution to the lead-acid battery to solve issues of sulfation and improve cycle life. In this work, we present polypyrrole-MoS2-based composite anode material coupled with PbO2 cathode for the lead-carbon hybrid ultracapacitors. Ultracapacitor behavior of polypyrrole-MoS2 based composite shows significant improvement in capacitance and power-density due to the synergetic effect of the high conducting polymer network and redox behavior of MoS2. The nanopetal shaped composite materials have been synthesized by a simple hydrothermal method at 160 oC by using polypyrrole. The composite Polypyrrole-MoS2 electrode delivers a specific capacitance of 782 Fg-1 at 1 A g-1 current density with low areal specific resistance (1.15 Ohm cm2) in an aqueous H2SO4 electrolyte. Besides, the PbO2/Polypyrrole-MoS2 hybrid ultracapacitors deliver capacitance of 285 F g-1 at 5 A g-1 and stable over 10,000 cycles. The improved capacitive behavior of the Polypyrrole-MoS2 composite electrode is due to the redox behavior, effective intercalation of H+ ions into the composite frameworks by transporting the electrons as well as have easy doping/de-doping of sulfate ions to the polypyrrole network.

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IITH Creators:

IITH Creators	ORCiD
Muduli, Sadananda	UNSPECIFIED
Naresh, Vangapally	UNSPECIFIED
Pati, Subir K.	UNSPECIFIED
Duary, Subrata	UNSPECIFIED
Martha, Surendra Kumar	UNSPECIFIED

Item Type:

Article

Uncontrolled Keywords:

Anodes; Capacitance; Carbon; Conducting polymers; Electrolytes; Land vehicle propulsion; Layered semiconductors; Lead acid batteries; Lead oxide; Molybdenum compounds; Sulfur compounds; Sulfuric acid; Supercapacitor

Subjects:

Chemistry

Divisions:

Department of Chemistry

Depositing User:

. LibTrainee 2021

Date Deposited:

12 Jul 2021 07:55

Last Modified:

12 Jul 2021 07:55

URI:

http://raiith.iith.ac.in/id/eprint/8243