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Issue 11, 2016
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Tin/vanadium redox electrolyte for battery-like energy storage capacity combined with supercapacitor-like power handling

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Abstract

We introduce a high performance hybrid electrochemical energy storage system based on an aqueous electrolyte containing tin sulfate (SnSO4) and vanadyl sulfate (VOSO4) with nanoporous activated carbon. The energy storage mechanism of this system benefits from the unique synergy of concurrent electric double-layer formation, reversible tin redox reactions, and three-step redox reactions of vanadium. The hybrid system showed excellent electrochemical properties such as a promising energy capacity (ca. 75 W h kg−1, 30 W h L−1) and a maximum power of up to 1.5 kW kg−1 (600 W L−1, 250 W m−2), exhibiting capacitor-like galvanostatic cycling stability and a low level of self-discharging rate.

Graphical abstract: Tin/vanadium redox electrolyte for battery-like energy storage capacity combined with supercapacitor-like power handling

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Supplementary files

Article information


Submitted
08 Mar 2016
Accepted
09 Jun 2016
First published
09 Jun 2016

This article is Open Access

Energy Environ. Sci., 2016,9, 3392-3398
Article type
Communication

Tin/vanadium redox electrolyte for battery-like energy storage capacity combined with supercapacitor-like power handling

J. Lee, B. Krüner, A. Tolosa, S. Sathyamoorthi, D. Kim, S. Choudhury, K. Seo and V. Presser, Energy Environ. Sci., 2016, 9, 3392
DOI: 10.1039/C6EE00712K

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