Preparation and Characterization of PEO-LATP/LAGP Ceramic Composite Electrolyte Membrane for Lithium Batteries

doi:10.3724/SP.J.1077.2012.00249

Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (3): 249-252.DOI: 10.3724/SP.J.1077.2012.00249

• Research Paper • Previous Articles Next Articles

Preparation and Characterization of PEO-LATP/LAGP Ceramic Composite Electrolyte Membrane for Lithium Batteries

HUANG Le-Zhi, WEN Zhao-Yin, JIN Jun, LIU Yu

(CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

Received:2011-03-28 Revised:2011-05-16 Published:2012-03-20 Online:2012-02-16
About author:HUANG Le-Zhi. E-mail: huanglezhi6800@hotmail.com
Supported by:
973 Program (2007CB209700); National Natural Science Foundation of China(50973127)

Abstract

Abstract: A PEO-LATP/LAGP composite electrolyte for lithium batteries was designed and prepared. Uniformly composite electrolyte membrane with thickness of 20 μm was obtained by assembling Li_1.4Al_0.4Ti_1.6(PO₄)₃ (LATP) or Li_1.5Al_0.5Ge_1.5(PO₄)₃ (LAGP) as ceramic substrate and PEO as binder. Highest room-temperature conductivities were achieved for the sample prepared with w(ceramics):w(PEO)=7:3. Electrochemical analysis showed that the conductivity reached 0.186 mS/cm for PEO-LATP and 0.111 mS/cm for PEO-LAGP. Cycling performances of 170 mAh/g was obtained for the first discharge capacity of the Li/composite electrolyte/LiCo_1/3Ni_1/3Mn_1/3O₂ cell. Sharp decrease of cycling capacity was observed for the cell using PEO-LATP membrane. The cycling performance of the PEO-LAGP based cell was greatly improved with 150 mAh/g remained after 10 cycles.

Key words: lithium battery, composite electrolyte, NASICON, PEO

CLC Number:

TQ152

HUANG Le-Zhi, WEN Zhao-Yin, JIN Jun, LIU Yu. Preparation and Characterization of PEO-LATP/LAGP Ceramic Composite Electrolyte Membrane for Lithium Batteries[J]. Journal of Inorganic Materials, 2012, 27(3): 249-252.

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Preparation and Characterization of PEO-LATP/LAGP Ceramic Composite Electrolyte Membrane for Lithium Batteries

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