Characterization of SBA-15 doped (PEO + LiClO 4) polymer electrolytes for electrochemical applications

• Published in: Journal of non-crystalline solids Vol. 353; no. 4; pp. 440 - 445
• Main Authors: Subba Reddy, Ch.V., Wu, G.P., Zhao, C.X., Zhu, Q.Y., Chen, W., Kalluru, Rajamohan R.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15-03-2007; Elsevier
• Subjects: Chemistry; Conductivity; Electrochemical properties; Electrochemistry; Exact sciences and technology; General and physical chemistry; Properties of electrolytes: conductivity; Conductivity; 82.47.Aa; 66.30.Dn; Electrochemical properties; Differential scanning calorimetry; Scanning electron microscopy; Electrochemical properties; Conductivity; Polymer electrolytes; Doping; 82.47.Aa; 66.30.Dn; Crystallinity; X ray diffraction; Porous material; Mesoporosity; Ethylene oxide polymer; Miscibility; Filler
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2006.12.010

SBA-15 mesoporous material was prepared by the simple hydrothermal process and added to poly(ethylene oxide) (PEO) and lithium percholorate (LiClO
4) as a filler. X-ray Diffractometry (XRD), Differential Scanning Calorimetry (DSC) and Scanning Electron Microscopy (SEM) were used to determine the characteristics of the composite polymer electrolyte. The SEM of the electrolyte containing 10
wt% of SBA-15 confirms the highest miscibility and amorphous nature. SBA-15 doped (PEO
+
LiClO
4) polymer electrolytes have shown improved conductivity over the pure PEO and (PEO
+
LiClO
4) electrolyte. The mesoporous SBA-15 acted as crystal cores and fined the crystallites thus decreasing the crystallinity, which provided a much more continuous amorphous domain for Li
+ ions to move easily in the (PEO
+
LiClO
4) electrolyte.