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| Type |
Poster Presentation |
| Area |
Electrochemistry |
| Room No. |
Grand Ballroom |
| Time |
10월 19일 (금요일) 11:00~12:30 |
| Code |
ELEC.P-484 |
| Subject |
Novel salt based acetonitrile, propylene carbonate electrolyte systems for high voltage EDLC |
| Authors |
Thi Hoai Van Nguyen, Gyungse Park1,*, Kyung-koo Lee1,*
Chemistry, KunSan National University, Vietnam
1Department of Chemistry, Kunsan National University, Korea
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| Abstract |
In this study, the new salt 1,1-dimethylpyrrolidinium tetrafluoroborate (DMPBF4) and well-known electrolytes tetraethyl ammonium tetra fluoroborate (TEABF4), spiro-1,1'-bipyrrolidinium tetrafluoroborate (SBPBF4) in acetonitrile (ACN) and propylene carbonate (PC) was systematically evaluated. These electrolytes were firstly investigated by calculation (Gaussian 09) method to achieve the ionic size, solvation energy, interaction energy, reduction, and oxidation stabilities and predict the capacitance. DMP+ exhibited the highest solvation energy, interaction energy, smallest ions size drive to lower ionic conductivity so that its capacitance is higher than those of TEA+ and SBP+. Electrochemical characteristics of those electrolytes such as ionic conductivity, viscosity, cyclic voltammetry (CV), rate capability, and aging test of activated carbon electrode based coin cells was gained. It indicated that influences of the electrolyte components on increasing the capacitance for cells using SBPBF4 and DMPBF4 than TEABF4. The use of ACN as the electrolyte solvent in the cell led to higher capacitance, rate capability than those using alkyl carbonate solvents, such as propylene carbonate. However, through the cycling result, PC showed a little improvement than ACN at 3.0V. |
| E-mail |
hoaivan9415@gmail.com |
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122nd General Meeting of the KCS