e-journal

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

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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/LiClO4 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 K3Fe(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 K3Fe(CN)6/K4Fe(CN)6-containing SC) due to the wide voltage
window and fast redox reactions between mediators.

Keywords: PVDF; Solid-state; Supercapacitor; Mediator

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Informasi Detail

Judul Seri

Journal of Power Sources

No. Panggil

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Penerbit

New York : Elsevier B.V.., 2011

Deskripsi Fisik

Journal of Power Sources 196 (2011) 10479– 10483

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

196 (2011)

Subjek

KIMIA MATERIAL

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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