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Ionic conductivity studies of poly(vinyl alcohol) alkaline solid polymer electrolyte and its use in nickel–zinc cells

Mohamad , A. A. and Mohamed, N. S. and Yahya, M. Z. A. and Othman, Raihan and Ramesh, S. and Alias, Y. and Arof, A. K. (2003) Ionic conductivity studies of poly(vinyl alcohol) alkaline solid polymer electrolyte and its use in nickel–zinc cells. Solid State Ionics, 156 (1-2). pp. 171-177. ISSN 0167-2738

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Abstract

X-ray diffraction (XRD) pattern reveals that potassium hydroxide (KOH) disrupts the crystalline nature of poly(vinyl alcohol) (PVA)-based polymer electrolytes and converts them into an amorphous phase. The PVA–KOH alkaline solid polymer electrolyte (ASPE) system with PVA/KOH wt.% ratio of 60:40 exhibits the highest room temperature ionic conductivity of 8.5�10 exp(-4) S/cm. This electrolyte was used in the fabrication of a nickel–zinc (Ni–Zn) cell. The cell was charged at a constant current of 10 mA for 1 h providing it with 1.6 V. The cell was cycled 100 times. At the end of the last cycle, the cell still contained a capacity of 5.5 mA h.

Item Type: Article (Journal)
Additional Information: 2593/3964
Uncontrolled Keywords: poly(vinyl alcohol), potassium hydroxide, alkaline solid polymer electrolyte, nickel–zinc cell
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ807 Renewable energy sources
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2896 Production of electricity by direct energy conversion
T Technology > TP Chemical technology > TP250 Industrial electrochemistry
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Science
Depositing User: Raihan Othman
Date Deposited: 28 Sep 2011 16:07
Last Modified: 02 Apr 2012 16:23
URI: http://irep.iium.edu.my/id/eprint/3964

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