A novel ionic‐conduction mechanism based on polyurethane electrolyte
作者： Weihua Zhu , Xinling Wang , Bing Yang , Xiaozhen Tang
DOI: 10.1002/POLB.1098
关键词:
摘要: A series of poly(ethylene glycol)–polyurethane (PEG–PU)/sodium perchlorate (NaClO4) solid electrolytes were prepared, and their properties characterized with Fourier transform infrared spectroscopy, differential scanning calorimetry, complex impedance analysis, atomic force microscopy. Results showed that the oxygen atoms carbonyl ether groups had different activities on cations. Both participated in ionic-transport process PU-based electrolytes. There existed a coordination competition between sodium cations soft hard segments PU. For PEG–PU/NaClO4 system investigated, amorphous regions interfacial microcrystalline phases responsible for ionic conduction. new mechanism, based existence conduction pathways not only but also microphase-separated electrolytes, is sketched. Moreover, at particular concentration doped salt (EO/NaClO4 12), revealed phase-transition point morphology exhibited minimum apparent activation energy maximum conductivity. © 2001 John Wiley & Sons, Inc. J Polym Sci B: Phys 39: 1246–1254,
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