Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jpowsour.2004.02.017
Title: Li+ conducting 'fuzzy' poly(ethylene oxide)-SiO2 polymer composite electrolytes
Authors: Zhang, S.
Lee, J.Y. 
Hong, L. 
Keywords: Composite polymer electrolytes
Conductivity
Morphology
Poly(ethylene oxide)
Rechargeable lithium battery
Transference number
Issue Date: 12-Jul-2004
Source: Zhang, S., Lee, J.Y., Hong, L. (2004-07-12). Li+ conducting 'fuzzy' poly(ethylene oxide)-SiO2 polymer composite electrolytes. Journal of Power Sources 134 (1) : 95-102. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jpowsour.2004.02.017
Abstract: Short and 'fuzzy' poly(ethylene) glycol chains with different molecule weights have been successfully grafted on to a pristine SiO2 nanoparticle surface using toluene 2,4-diisocyanate as the bridging molecule. Solvent-free composite electrolytes based on poly(ethylene oxide), LiBF 4 and SiO2 or modified SiO2 particles have been prepared and compared. Composite electrolytes with modified SiO2 show a noticeably smoother surface texture under scanning electron microscopy. This is attributed to improved compatibility between the ceramic particles and polymer. The increased amorphization of the polymer leads to increase in room-temperature ionic conductivity as more ion-conduction channels are created in close proximity to the modified silica particles. On the other hand, a lower transference number is the result of weakened Lewis acid-base interactions between the polymer backbone and a smaller number of OH groups on the silica surface. © 2004 Elsevier B.V. All rights reserved.
Source Title: Journal of Power Sources
URI: http://scholarbank.nus.edu.sg/handle/10635/89323
ISSN: 03787753
DOI: 10.1016/j.jpowsour.2004.02.017
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