Development of all-solid-state mediator-enhanced supercapacitors with polyvinylidene fluoride/lithium trifluoromethanesulfonate separators

Juanjuan Zhou; Jinshu Cai; Sirui Cai; Xiangyang Zhou; Azzam N. Mansour

doi:10.1016/j.jpowsour.2011.08.051

Development of all-solid-state mediator-enhanced supercapacitors with polyvinylidene fluoride/lithium trifluoromethanesulfonate separators

Juanjuan Zhou, Jinshu Cai, Sirui Cai, Xiangyang Zhou, Azzam N. Mansour

Mechanical & Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

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 (US)
Pages (from-to)	10479-10483
Number of pages	5
Journal	Journal of Power Sources
Volume	196
Issue number	23
DOIs	https://doi.org/10.1016/j.jpowsour.2011.08.051
State	Published - Dec 1 2011

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

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@article{42747b5fab724a8daa2f38823ffe74b4,

title = "Development of all-solid-state mediator-enhanced supercapacitors with polyvinylidene fluoride/lithium trifluoromethanesulfonate separators",

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.",

keywords = "Mediator, PVDF, Solid-state, Supercapacitor",

author = "Juanjuan Zhou and Jinshu Cai and Sirui Cai and Xiangyang Zhou and Mansour, {Azzam N.}",

note = "Funding Information: The authors would like to thank the Office of Naval Research (ONR) for financial support of this research under award numbers N00014-08-1-0332 and N00014-08-WX-20797.",

year = "2011",

month = dec,

day = "1",

doi = "10.1016/j.jpowsour.2011.08.051",

language = "English (US)",

volume = "196",

pages = "10479--10483",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier",

number = "23",

}

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.

N1 - Funding Information: The authors would like to thank the Office of Naval Research (ONR) for financial support of this research under award numbers N00014-08-1-0332 and N00014-08-WX-20797.

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

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JO - Journal of Power Sources

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SN - 0378-7753

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