Abstract
NaI/I2 mediators and activated carbon were added into poly(ethylene oxide) (PEO)/lithium aluminate (LiAlO2) electrolyte to fabricate composite electrodes. All solid-state supercapacitors were fabricated using the as prepared composite electrodes and a Nafion 117 membrane as a separator. Cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge/discharge measurements were conducted to evaluate the electrochemical properties of the supercapacitors. With the addition of NaI/I2 mediators, the specific capacitance increased by 27 folds up to 150 F g-1. The specific capacitance increased with increases in the concentration of mediators in the electrodes. The addition of mediators also reduced the electrode resistance and rendered a higher electron transfer rate between mediator and mediator. The stability of the all-solid-state supercapacitor was tested over 2000 charge/discharge cycles.
| Original language | English |
|---|---|
| Pages (from-to) | 5997-6002 |
| Number of pages | 6 |
| Journal | Journal of Power Sources |
| Volume | 196 |
| Issue number | 14 |
| DOIs | |
| State | Published - Jul 15 2011 |
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Keywords
- NaI/I mediator
- PEO/LiAlO/AC
- Solid-state
- Supercapacitor
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Energy Engineering and Power Technology
- Renewable Energy, Sustainability and the Environment
- Physical and Theoretical Chemistry
Cite this
Effect of NaI/I2 mediators on properties of PEO/LiAlO 2 based all-solid-state supercapacitors. / Yin, Yijing; Zhou, Juanjuan; Mansour, Azzam N.; Zhou, Xiangyang.
In: Journal of Power Sources, Vol. 196, No. 14, 15.07.2011, p. 5997-6002.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of NaI/I2 mediators on properties of PEO/LiAlO 2 based all-solid-state supercapacitors
AU - Yin, Yijing
AU - Zhou, Juanjuan
AU - Mansour, Azzam N.
AU - Zhou, Xiangyang
PY - 2011/7/15
Y1 - 2011/7/15
N2 - NaI/I2 mediators and activated carbon were added into poly(ethylene oxide) (PEO)/lithium aluminate (LiAlO2) electrolyte to fabricate composite electrodes. All solid-state supercapacitors were fabricated using the as prepared composite electrodes and a Nafion 117 membrane as a separator. Cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge/discharge measurements were conducted to evaluate the electrochemical properties of the supercapacitors. With the addition of NaI/I2 mediators, the specific capacitance increased by 27 folds up to 150 F g-1. The specific capacitance increased with increases in the concentration of mediators in the electrodes. The addition of mediators also reduced the electrode resistance and rendered a higher electron transfer rate between mediator and mediator. The stability of the all-solid-state supercapacitor was tested over 2000 charge/discharge cycles.
AB - NaI/I2 mediators and activated carbon were added into poly(ethylene oxide) (PEO)/lithium aluminate (LiAlO2) electrolyte to fabricate composite electrodes. All solid-state supercapacitors were fabricated using the as prepared composite electrodes and a Nafion 117 membrane as a separator. Cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge/discharge measurements were conducted to evaluate the electrochemical properties of the supercapacitors. With the addition of NaI/I2 mediators, the specific capacitance increased by 27 folds up to 150 F g-1. The specific capacitance increased with increases in the concentration of mediators in the electrodes. The addition of mediators also reduced the electrode resistance and rendered a higher electron transfer rate between mediator and mediator. The stability of the all-solid-state supercapacitor was tested over 2000 charge/discharge cycles.
KW - NaI/I mediator
KW - PEO/LiAlO/AC
KW - Solid-state
KW - Supercapacitor
UR - http://www.scopus.com/inward/record.url?scp=79955474813&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79955474813&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2011.02.079
DO - 10.1016/j.jpowsour.2011.02.079
M3 - Article
VL - 196
SP - 5997
EP - 6002
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
IS - 14
ER -