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 |
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Muduli, Sadananda | UNSPECIFIED | Naresh, Vangapally | UNSPECIFIED | Pati, Subir K. | UNSPECIFIED | Duary, Subrata | UNSPECIFIED | Martha, Surendra Kumar | UNSPECIFIED |
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Item Type: |
Article
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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
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Date Deposited: |
12 Jul 2021 07:55 |
Last Modified: |
12 Jul 2021 07:55 |
URI: |
http://raiith.iith.ac.in/id/eprint/8243 |
Publisher URL: |
http://doi.org/10.1149/1945-7111/abfd77 |
OA policy: |
https://v2.sherpa.ac.uk/id/publication/14987 |
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