Formulation of Ionic-Liquid Electrolyte To Expand the Voltage Window of Supercapacitors
Journal Article
·
· Angewandte Chemie (International Edition)
An effective method to expand the operating potential window (OPW) of electrochemical capacitors based on formulating the ionic-liquid (IL) electrolytes is reported. Using model electrochemical cells based on two identical onion-like carbon (OLC) electrodes and two different IL electrolytes and their mixtures, it was shown that the asymmetric behavior of the electrolyte cation and anion toward the two electrodes limits the OPW of the cell and therefore its energy density. Also, a general solution to this problem is proposed by formulating the IL electrolyte mixtures to balance the capacitance of electrodes in a symmetric supercapacitor.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Fluid Interface Reactions, Structures and Transport Center (FIRST)
- Sponsoring Organization:
- USDOE SC Office of Basic Energy Sciences (SC-22)
- OSTI ID:
- 1386357
- Journal Information:
- Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 16 Vol. 54; ISSN 1433-7851
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
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Formulation of ionic liquid electrolyte to expand the voltage window of supercapacitors
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Tue Mar 17 20:00:00 EDT 2015
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OSTI ID:1265356
Formulation of Ionic‐Liquid Electrolyte To Expand the Voltage Window of Supercapacitors
Journal Article
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Tue Mar 17 20:00:00 EDT 2015
· Angewandte Chemie
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OSTI ID:1786021