Decoupled ion conduction mechanism of poly(vinyl alcohol) based Mg-conducting solid polymer electrolyte

Investigation on solid state rechargeable magnesium batteries are considered important similar to lithium batteries. In view of negligible hazard and less reactivity of the magnesium, in comparison with lithium, studies on rechargeable magnesium batteries are expected to have a wide scope in future....

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Published in:Electrochimica acta 2006-12, Vol.52 (4), p.1549-1555
Main Authors: Jeong, Soo-Kyeong, Jo, Yun-Kyung, Jo, Nam-Ju
Format: Article
Language:English
Subjects:
Applied sciences
Chemistry
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Electrochemistry
Exact sciences and technology
General and physical chemistry
Ion conduction mechanism
Magnesium triflate
Poly(vinyl alcohol) (PVA)
Properties of electrolytes: conductivity
Solid polymer electrolyte (SPE)
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Summary:Investigation on solid state rechargeable magnesium batteries are considered important similar to lithium batteries. In view of negligible hazard and less reactivity of the magnesium, in comparison with lithium, studies on rechargeable magnesium batteries are expected to have a wide scope in future. In the present investigations, decoupled ion conduction of poly(vinyl alcohol) (PVA)-based Mg-conducting solid polymer electrolytes (SPEs) is essential component of the studies. In common SPEs, ion transport has mostly been associated with the segmental motion of the polymer, so significant conductivity is only observed above the glass transition temperature of the system. But the results of ac impedance spectroscopy, FT-IR, XRD and AFM indicated that prepared PVA-based Mg-conducting SPE shows ionic transport decoupled from polymer segmental motion and high ionic conductivity at room temperature.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2006.02.061