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

  • 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.

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Document Type:Article
Author:Juhan LeeORCiD, Benjamin KrünerORCiD, Aura TolosaORCiD, Sethuraman Sathyamoorthi, Daekyu Kim, Soumyadip Choudhury, Kum-Hee Seo, Volker PresserORCiD
Parent Title (English):Energy & Environmental Science
First Page:3392
Last Page:3398
Publisher:The Royal Society of Chemistry
Year of first Publication:2016
Date of final exam:2016/06/09
Release Date:2022/11/18
Impact:29.518 (2016)
Funding Information:German Federal Ministry for Research and Education (BMBF), nanoEES3D project: award number 03EK3013
Research Departments:Energie-Materialien
Open Access:Open Access
Signature:INM 2016/98
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International