Abstract
All-solid-state supercapacitors (SCs) were fabricated using a polyvinylidene fluoride (PVDF)/lithium trifluoromethanesulfonate (LiTFS) membrane as the separator and poly(ethylene oxide) (PEO)/lithium perchlorate (LiClO4) as the polymer electrolyte in the porous carbon electrodes. Two types of mediators, NaI/I2 and K3Fe(CN) 6/K4Fe(CN)6, were added into the PEO/LiClO 4 polymer electrolyte that was used to fabricate the electrodes. The voltage window in which the SCs operated was 2.5-3 V. The results of electrochemical measurements, including cyclic voltammetry and galvanostatic charge/discharge, indicated that NaI/I2-containing and K 3Fe(CN)6/K4Fe(CN)6-containing SCs yielded high specific capacitances of 209.0 and 138.8 F g-1, respectively. In addition to high specific capacitances for the two mediator-containing SCs, both SCs delivered high specific energies (49.1 Wh kg-1 at 1.6 kW kg-1 for the NaI/I2-containing SC and 33.6 Wh kg-1 at 1.3 kW kg-1 for the K 3Fe(CN)6/K4Fe(CN)6-containing SC) due to the wide voltage window and fast redox reactions between mediators.
| Original language | English |
|---|---|
| Pages (from-to) | 10479-10483 |
| Number of pages | 5 |
| Journal | Journal of Power Sources |
| Volume | 196 |
| Issue number | 23 |
| DOIs | |
| State | Published - Dec 1 2011 |
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Keywords
- Mediator
- PVDF
- 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
Development of all-solid-state mediator-enhanced supercapacitors with polyvinylidene fluoride/lithium trifluoromethanesulfonate separators. / Zhou, Juanjuan; Cai, Jinshu; Cai, Sirui; Zhou, Xiangyang; Mansour, Azzam N.
In: Journal of Power Sources, Vol. 196, No. 23, 01.12.2011, p. 10479-10483.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Development of all-solid-state mediator-enhanced supercapacitors with polyvinylidene fluoride/lithium trifluoromethanesulfonate separators
AU - Zhou, Juanjuan
AU - Cai, Jinshu
AU - Cai, Sirui
AU - Zhou, Xiangyang
AU - Mansour, Azzam N.
PY - 2011/12/1
Y1 - 2011/12/1
N2 - All-solid-state supercapacitors (SCs) were fabricated using a polyvinylidene fluoride (PVDF)/lithium trifluoromethanesulfonate (LiTFS) membrane as the separator and poly(ethylene oxide) (PEO)/lithium perchlorate (LiClO4) as the polymer electrolyte in the porous carbon electrodes. Two types of mediators, NaI/I2 and K3Fe(CN) 6/K4Fe(CN)6, were added into the PEO/LiClO 4 polymer electrolyte that was used to fabricate the electrodes. The voltage window in which the SCs operated was 2.5-3 V. The results of electrochemical measurements, including cyclic voltammetry and galvanostatic charge/discharge, indicated that NaI/I2-containing and K 3Fe(CN)6/K4Fe(CN)6-containing SCs yielded high specific capacitances of 209.0 and 138.8 F g-1, respectively. In addition to high specific capacitances for the two mediator-containing SCs, both SCs delivered high specific energies (49.1 Wh kg-1 at 1.6 kW kg-1 for the NaI/I2-containing SC and 33.6 Wh kg-1 at 1.3 kW kg-1 for the K 3Fe(CN)6/K4Fe(CN)6-containing SC) due to the wide voltage window and fast redox reactions between mediators.
AB - All-solid-state supercapacitors (SCs) were fabricated using a polyvinylidene fluoride (PVDF)/lithium trifluoromethanesulfonate (LiTFS) membrane as the separator and poly(ethylene oxide) (PEO)/lithium perchlorate (LiClO4) as the polymer electrolyte in the porous carbon electrodes. Two types of mediators, NaI/I2 and K3Fe(CN) 6/K4Fe(CN)6, were added into the PEO/LiClO 4 polymer electrolyte that was used to fabricate the electrodes. The voltage window in which the SCs operated was 2.5-3 V. The results of electrochemical measurements, including cyclic voltammetry and galvanostatic charge/discharge, indicated that NaI/I2-containing and K 3Fe(CN)6/K4Fe(CN)6-containing SCs yielded high specific capacitances of 209.0 and 138.8 F g-1, respectively. In addition to high specific capacitances for the two mediator-containing SCs, both SCs delivered high specific energies (49.1 Wh kg-1 at 1.6 kW kg-1 for the NaI/I2-containing SC and 33.6 Wh kg-1 at 1.3 kW kg-1 for the K 3Fe(CN)6/K4Fe(CN)6-containing SC) due to the wide voltage window and fast redox reactions between mediators.
KW - Mediator
KW - PVDF
KW - Solid-state
KW - Supercapacitor
UR - http://www.scopus.com/inward/record.url?scp=80053563103&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80053563103&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2011.08.051
DO - 10.1016/j.jpowsour.2011.08.051
M3 - Article
AN - SCOPUS:80053563103
VL - 196
SP - 10479
EP - 10483
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
IS - 23
ER -