A 2.7 V Aqueous Supercapacitor Using a Microemulsion Electrolyte

Title: A 2.7 V Aqueous Supercapacitor Using a Microemulsion Electrolyte
Creator: Hughson, Fraseer R.; Borah, Rohan; Nann, Thomas
Relation: Batteries and Supercaps Vol. 4, Issue 7, p. 1122-1125
Publisher Link: http://dx.doi.org/10.1002/batt.202000314
Publisher: Wiley-VCH Verlag GmbH & Co. KGaA
Resource Type: journal article
Date: 2021
Description: The use of aqueous electrolytes in energy storage devices is traditionally limited by the voltage stability window of water at 1.23 V. Here, we present the use of a microemulsion based electrolyte which, although mostly water by mass, has a voltage stability window of up to 5 V. This allows the cost and safety benefits of aqueous electrolytes to finally be realised in high voltage systems. Supercapacitors constructed using this electrolyte were able to achieve and maintain a capacitance of ∼40 Fg−1 and an energy density of ∼40 Wh kg−1 with a Coulombic efficiency of 99 % for over 10,000 cycles on activated carbon.
Subject: aqueous supercapacitors; electrochemistry; electrolytes; microemulsion electrolytes; water splitting
Identifier: http://hdl.handle.net/1959.13/1474895
Identifier: uon:49406
Identifier: ISSN:2566-6223
Language: eng
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