Solid State Science and Technology, Vol. 15, No 1 (2007) 82-88

ISSN 0128-7389

Corresponding Author: kamisah_mohd.mahbor@sirim.my

82

IMPEDANCE SPECTROSCOPY STUDY ON THE REACTIVITY OF

PVDF/HFP-BASED GEL POLYMER ELECTROLYTES TOWARDS A

LITHIUM ELECTRODE

Kamisah Mohamad Mahbora and Ibrahim Abu Talibb

aAMREC, SIRIM Berhad, Lot 34, Jln Hi-Tech 2/3,

Kulim Hi-Tech Park, 09000 Kulim, Kedah

bSchool of Applied Physics, Faculty of Science & Technology

Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia

ABSTRACT

The reactivity of poly(vinylidene-co-hexafluoropropylene) (PVdF/HFP)-based gel

polymer electrolytes towards a lithium electrode was studied by AC impedance

spectroscopy technique. PVdF/HFP-based gel polymer electrolyte (GPE) was

formed by immobilizing the lithium hexafluorophospate (LiPF6) in a mixture of

ethylene carbonate-dimethyl carbonate (EC-DMC) liquid electrolyte in the

copolymer matrix. The impedance measurement was run during 10 days storage of a

cell of Li/gel polymer electrolyte/Li. Results obtained were used to identify chargetransfer

resistance, double layer capacitance and properties of passivation films.

Ceramic filler of SnO2 was introduced in the system in attention to improve the

transport properties as well as to reduce the reactivity towards lithium electrode.

 

 

http://journal.masshp.net/wp-content/uploads/Journal/2007/Jilid%201/Kamisah%20Mohamad%20Mahbor%2082-88.pdf

REFERENCES

[1] Peled, E. (1983); Lithum Batteries, New York: Academic Press. Ch. 3.

[2] Morita, M., Aoki, S. and Matsuda, Y. (1992); Electrochim. Acta, 37, 119

[3] Aurbach, D. and Zaban, A. (1994); J. Electroanal. Chem., 367, 15

[4] Zaban, A., Zinigrad, E. and Aurbach, D. (1996); J. Phys. Chem 100, 3089

[5] Rahner, D., Machill, S & Ludwig, G. (1995); J. Power Sources, 54, 378

[6] MacDonald, J. R. (1987); Impedance Spectroscopy, Wiley Interscience, New

York

[7] Appetecchi, G.B., Scaccia, S. & Passerini, S. (2000); J. Electrochem. Soc. 147,

4448

ISSN 0128-8393

Corresponding Author: kamisah_mohd.mahbor@sirim.my

88

[8] Xu, W., Kok S.S., Gao, Z. & Swee, Y. L. (1998); Solid State Ionics, 112, 1

[9] Appetecchi, G. B. & Passerini, S. (2002); J. Electrochem. Soc. 149, A891

[10] Boukamp, B. A. (1986); Solid State Ionics, 20, 31

[11] Croce, F. & Scrosati, B. (1993); J. Power Sources, 44, 9

[12] Croce, F., Gerace, F., Dautzemberg, G., Passerini, S., Appetecchi, G. B. &

Scrosati, B. (1994); Electrochim. Acta, 39, 2187

[13] Aurbach, D. & Schechter, A. (2001); Electrochmi. Acta, 46, 2395

[14] Appetecchi, G. B., Croce, F., Persi, L., Ronci, F. & Scrosati, B. (2000);

Electrochim. Acta, 45, 1481.