A 12 V Substrate-Integrated PbO2-Activated Carbon Asymmetric Hybrid Ultracapacitor with Silica-Gel-Based Inorganic-Polymer Electrolyte

Banerjee, A and Ravikumar, MK and Jalajakshi, A and Gaffoor, SA and Shukla, AK (2012) A 12 V Substrate-Integrated PbO2-Activated Carbon Asymmetric Hybrid Ultracapacitor with Silica-Gel-Based Inorganic-Polymer Electrolyte. In: Symposium on Lead-Acid Batteries and Capacitors, New Designs, and New Applications held during the 220th Meeting of the Electrochemical-Society (ECS), , OCT 09-14, 2011, Boston, MA, , pp. 101-113.

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Abstract

A 12 V Substrate-Integrated PbO2-Activated Carbon hybrid ultracapacitor (SI-PbO2-AC HUCs) with silica-gel sulfuric acid electrolyte is developed and performance tested. The performance of the silica-gel based hybrid ultracapacitor is compared with flooded and AGM-based HUCs. These HUCs comprise substrate-integrated PbO2 (SI-PbO2) as positive electrodes and high surface-area activated carbon with dense graphite-sheet substrate as negative electrodes. 12 V SI-PbO2-AC HUCs with flooded, AGM and gel electrolytes are found to have capacitance values of 308 F, 184 F, and 269 F at C-rate and can be pulse charged and discharged for 100,000 cycles with only a nominal decrease in their capacitance values. The best performance is exhibited by gel-electrolyte HUCs.

Item Type:	Conference Paper
Series.:	ECS Transactions
Publisher:	ELECTROCHEMICAL SOC INC
Additional Information:	Copyright for this article belongs to ELECTROCHEMICAL SOC INC, USA
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	22 Feb 2013 09:30
Last Modified:	22 Feb 2013 09:30
URI:	http://eprints.iisc.ac.in/id/eprint/45872

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