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Ni-MH battery based on plasticized alkaline solid polymer electrolytes

Ni-MH battery based on plasticized alkaline solid polymer electrolytes Solid-state nickel metal hydride cells were fabricated using plasticized alkaline solid polymer electrolytes (ASPE) prepared from polyvinyl alcohol (PVA), potassium hydroxide (KOH), alumina (α-Al2O3), and propylene carbonate (PC). The ASPE film with PVA/KOH/α-Al2O3/PC/H2O weight ratio of 1.00:0.67:0.09:2.64:1.32 and conductivity of (6.6 ± 1.7) × 10−4 S cm−1 was used in fabrication of the electrochemical cells. To investigate the electrochemical properties of the plasticized ASPE, cells with the configuration Mg2Ni/plasticized ASPE/Ni(OH)2 were fabricated. At the eighth cycle with a current drain of 0.1 mA and plateau voltage of ∼1.1 V, the discharge lasted for 14 h before the cell was considered to have failed. The failure mode of the cell was due to the formation of thin Mg(OH)2 insulating layers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

Ni-MH battery based on plasticized alkaline solid polymer electrolytes

Ionics , Volume 14 (5) – Dec 12, 2007

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References (18)

Publisher
Springer Journals
Copyright
Copyright © 2007 by Springer-Verlag
Subject
Chemistry; Electrochemistry; Renewable and Green Energy; Optical and Electronic Materials; Condensed Matter Physics; Energy Storage
ISSN
0947-7047
eISSN
1862-0760
DOI
10.1007/s11581-007-0186-8
Publisher site
See Article on Publisher Site

Abstract

Solid-state nickel metal hydride cells were fabricated using plasticized alkaline solid polymer electrolytes (ASPE) prepared from polyvinyl alcohol (PVA), potassium hydroxide (KOH), alumina (α-Al2O3), and propylene carbonate (PC). The ASPE film with PVA/KOH/α-Al2O3/PC/H2O weight ratio of 1.00:0.67:0.09:2.64:1.32 and conductivity of (6.6 ± 1.7) × 10−4 S cm−1 was used in fabrication of the electrochemical cells. To investigate the electrochemical properties of the plasticized ASPE, cells with the configuration Mg2Ni/plasticized ASPE/Ni(OH)2 were fabricated. At the eighth cycle with a current drain of 0.1 mA and plateau voltage of ∼1.1 V, the discharge lasted for 14 h before the cell was considered to have failed. The failure mode of the cell was due to the formation of thin Mg(OH)2 insulating layers.

Journal

IonicsSpringer Journals

Published: Dec 12, 2007

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