Conducting and interface characterization of carbonate-type organic electrolytes containing EMImBF4 as an additive against activated carbon electrode

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon Letters / 16권 / 1호
ㆍ저자명 : Mingyeong Kim, Kyungmin Kim and Seok Kim

목차

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
Acknowledgments
References

한국어 초록

Carbonate-type organic electrolytes were prepared using propylene carbonate (PC) and dimethylcarbonate (DMC) as a solvent, quaternary ammonium salts, and by adding differentcontents of 1-ethyl-3-methyl imidazolium tetrafluoroborate (EMImBF4). Cyclic voltammetryand linear sweep voltammetry were performed to analyze conducting behaviors. The surfacecharacterizations were analyzed by scanning electron microscopy method and X-ray photoelectronspectroscopy. From the experimental results, increasing the EMImBF4 content increasedthe ionic conductivity and reduced bulk resistance and interfacial resistance. In particular,after adding 15 vol% EMImBF4 in 0.2 M SBPBF4 PC/DMC electrolyte, the organicelectrolyte showed superior capacitance and interfacial resistance. However, when EMImBF4content exceeded 15 vol%, the capacitance was saturated and the voltage range decreased.

영어 초록

Carbonate-type organic electrolytes were prepared using propylene carbonate (PC) and dimethyl
carbonate (DMC) as a solvent, quaternary ammonium salts, and by adding different
contents of 1-ethyl-3-methyl imidazolium tetrafluoroborate (EMImBF4). Cyclic voltammetry
and linear sweep voltammetry were performed to analyze conducting behaviors. The surface
characterizations were analyzed by scanning electron microscopy method and X-ray photoelectron
spectroscopy. From the experimental results, increasing the EMImBF4 content increased
the ionic conductivity and reduced bulk resistance and interfacial resistance. In particular,
after adding 15 vol% EMImBF4 in 0.2 M SBPBF4 PC/DMC electrolyte, the organic
electrolyte showed superior capacitance and interfacial resistance. However, when EMImBF4
content exceeded 15 vol%, the capacitance was saturated and the voltage range decreased.

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