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Citation: LI Xue-Li, GUO Juan, WU Qiang, CHENG Yan, LONG Ying-Cai, JIANG Zhi-Yu. Research on the Enhanced Conductivity of Poly(ethylene oxide) Electrolyte by Adding Zeolite Li-FER[J]. Acta Physico-Chimica Sinica, ;2005, 21(04): 397-401. doi: 10.3866/PKU.WHXB20050411 shu

Research on the Enhanced Conductivity of Poly(ethylene oxide) Electrolyte by Adding Zeolite Li-FER

1.
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry，Fudan University, Shanghai 200433

Received Date: 31 August 2004
Available Online: 15 April 2005

Li-ferrierite (Li-FER) fine powder was prepared via an ion exchange process using lithium ions to replace the hydrogen atoms in hydroxyl group of FER. Compared with bare LiClO₄ /PEO [poly(ethylene oxide)] polymer electrolyte, the ionic conductivity of PEO composite polymer electrolyte was enhanced more than three orders by adding the Li-FER powder in it. The results of electrochemical measurements show that the Li⁺ transference number increased obviously by adding the Li-FER powder. The crystal properties of the composite polymer electrolytes were investigated by XRD, DSC, and polarized light microscopy (PLM) methods. It was found that the Li-FER fine powder could act as crystal nucleator to make grain refinement and provide more continuous amorphous domain, in which Li+ ions can move more easily. Therefore the conductivity of the PEO composite polymer electrolytes increased greatly.
- Zeolite; Ferrierite (FER); PEO; Polymer electrolyte; Conductivity
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