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

Gamma-butyroloctone(GBL)을 첨가한 유기계 전해액의 고전압용 전기화학 커패시터로의 응용

  • Received : 2016.10.19
  • Accepted : 2017.01.08
  • Published : 2017.02.28


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.


Supported by : 한국에너지기술평가원(KETEP)


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