Synthesis, structure and electrochemical characterization, and dynamic properties of double core branched organic-inorganic hybrid electrolyte membranes

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題名:	Synthesis, structure and electrochemical characterization, and dynamic properties of double core branched organic-inorganic hybrid electrolyte membranes
作者:	高憲明;Wu, Hao-Yiang;Chen, Yu-Han;Saikia, Diganta;Pan, Yu-Chi;Fang, Jason;Tsai, Li-Duan;Kao, Hsien-Ming
貢獻者:	理學院化學學系
關鍵詞:	artificial membranes;batteries;Chemistry;Colloidal state and disperse state;composite polymers;differential scanning calorimetry;diffusivity;Electrochemical stability;Electrochemistry;electrolytes;Exact sciences and technology;Fourier transform infrared spectroscopy;General and physical chemistry;impedance;Ionic conductivity;Membranes;nuclear magnetic resonance spectroscopy;Organic–inorganic hybrid electrolyte membrane;propylene glycol;sol-gel processing;Solid-state NMR;solvents;temperature
日期:	2013-11-05
上傳時間:	2026-04-21 14:15:35 (UTC+8)
出版者:	Elsevier;Amsterdam: Elsevier B.V
摘要:	摘要： Organic–inorganic hybrid electrolyte membranes based on the reaction of tri-block copolymer poly(propylene glycol)-block-poly(ethylene glycol)-block-poly(propylene glycol) bis(2-aminopropyl ether), 3-isocyanatepropyltriethoxysilane and central core 2,4,6-trichloro-1,3,5-triazine doped with LiClO4 were synthesized by a sol–gel process to obtain a double core branched structure. The structural and dynamic properties of the materials thus obtained were systematically investigated by a variety of techniques including alternate current impedance, Fourier transform infrared spectroscopy, differential scanning calorimetry, multinuclear solid-state NMR and 7Li diffusion coefficient measurements. A VTF (Vogel–Tamman–Fulcher)-like temperature dependence of ionic conductivity was observed for solid hybrid electrolyte membranes, implying that the diffusion of charge carriers was assisted by the segmental motions of the polymer chains. The Li-ion mobility was determined from 7Li static NMR linewidth and diffusion coefficient measurements and correlated with their ionic conductivities. A maximum ionic conductivity of 6.2×10−5Scm−1 was obtained at 30°C for the solid hybrid electrolyte membrane with a [O]/[Li] ratio of 32. After swelled in electrolyte solvent, the plasticized hybrid membrane exhibited a maximum ionic conductivity of 7.2×10−3Scm−1 at 30°C. The good value of electrochemical stability window (~5V) makes the plasticized hybrid electrolyte membrane promising for lithium-polymer battery applications. [Display omitted] •Double core organic–inorganic hybrid electrolyte membrane has been synthesized.•Solid hybrid electrolyte possessed maximum ionic conductivity of 6.2×10−5Scm−1.•Maximum conductivity of 7.2mScm−1 was achieved with the plasticized electrolyte.•PGSE NMR reveals that ion pairs and segmental mobility affect Li diffusion coefficient. 出版者： Amsterdam: Elsevier B.V 出版日期： 2013-11-15 出處： Journal of membrane science, 2013-11, Vol.447, p.274-286 版權： 2013 Elsevier B.V. 版權： 2015 INIST-CNRS 識別號： ISSN: 0376-7388 識別號： DOI: 10.1016/j.memsci.2013.07.043 識別號： CODEN: JMESDO
顯示於類別:	[化學學系] 期刊論文

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