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http://dx.doi.org/10.5229/JKES.2017.20.1.13

Organic Electrolyte of the Additive the Gamma-Butyroloctone (GBL) for Additive Material Application to High Voltage Electrochemical Capacitor  

You, Sun-Kyung (Engineering chemical, Chungbuk National University)
Park, Soo-Gil (Engineering chemical, Chungbuk National University)
Publication Information
Journal of the Korean Electrochemical Society / v.20, no.1, 2017 , pp. 13-17 More about this Journal
Abstract
In this study, we studied the organic electrolyte application to electrochemical capacitor for high operation voltage. For high operating voltage, 5 wt % of gamma butyroloctone (GBL) was added in the bare electrolyte. During the cycle performance, stable SEI layers were formed by reductive decomposition of additive GBL. As a result, columbic efficient of 1M $SBPBF_4$ in EC:DMC(1:1) with GBL composite was enhanced to 70% after the 2000th cycle at voltage range 0-3.5 V. Additionally, SEI layer protected the surface of electrode and prevent the side-reaction between electrolyte to electrode.
Keywords
Electrolyte; Electrochemical capacitors; Additive material; Gamma butyroloctone (GBL);
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