Preparation and Property of a Novel Heat-resistant Ceramic Composite Solid-state Electrolyte for Lithium Batteries

doi:10.15541/jim20160617

Journal of Inorganic Materials ›› 2017, Vol. 32 ›› Issue (8): 801-805.DOI: 10.15541/jim20160617

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Preparation and Property of a Novel Heat-resistant Ceramic Composite Solid-state Electrolyte for Lithium Batteries

LI Cheng-Bin^1,2, YUE Hong-Yun³, WANG Qiu-Xian³, LI Jing-Xian³, YANG Shu-Ting^1,3

(1. College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China; 2. Department of Electrical Engineering, Henan Institute of Technology, Xinxiang 453003, China; 3. National and Local Joint Engineering Laboratory of Motive Power and Key Materials, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang 453007, China)

Received:2016-11-07 Revised:2017-02-17 Published:2017-08-10 Online:2017-07-19
About author:LI Cheng-Bin. E-mail: milestone31@foxmail.com
Supported by:
National Natural Science Foundation of China (U1504211);Science and Technology Project of Henan Province (142102210449)

Abstract

Abstract:

Poly(ethylene oxide) (PEO) as a kind of promising candidates of polymer electrolyte is widely applied in all solid lithium ion batteries. In this study, a novel ceramic composite solid electrolyte (CLASP) was prepared by dip-coating PEO-LAGP-SN-LiTFSI (PEO-SPE) into Al₂O₃ nonwoven membrane. And all solid batteries were assembled with CLASP. CLASP showed excellent thermostability even at 170℃ for 2 h. When the ratio of PEO: LAGP: SN: LiTFSI was 3: 1: 1: 1, the conductivities of CLASP reached 3.66×10^-5 S/cm at 25℃ and 2.52×10^-4 S/cm at 100℃, respectively. The electrochemical window of CLASP was 5.5 V, which had great potential to apply in battery with high voltage cathode material. The cycling performance of all solid batteries with CLASP was greatly improved at 55℃ as well. This new ceramic composite, solid polymer electrolyte, with all these outstanding performance is a promising candidate of all solid electrolytes.

Key words: all solid state, composite electrolyte, LAGP, heat-resistance

CLC Number:

Q152

LI Cheng-Bin, YUE Hong-Yun, WANG Qiu-Xian, LI Jing-Xian, YANG Shu-Ting. Preparation and Property of a Novel Heat-resistant Ceramic Composite Solid-state Electrolyte for Lithium Batteries[J]. Journal of Inorganic Materials, 2017, 32(8): 801-805.

Figures/Tables 4

Fig. 1 (a) ATR-FTIR spectra of PEO, SN, LiTFSI, LAGP, PEO-SPE, bare FS-25, and CLASP; (b) XRD pattern of LAGP and the LAGP particle diameter distribution (inset); (c) XRD patterns of bare FS-25 and CLASP

Fig. 2 Surface and cross-section SEM images of bare FS-25 (a, b and c) and CLASP (d, e and f)

Fig. 3 DSC curves for PEO, SN, PEO-SPE, bare FS-25, and CLASP Inset is the shrinkage pictures of PP, bare FS-25 and CLASP after treatment at 170℃for 2 h

Fig. 4 (a) Temperature dependence of ionic conductivity for LAGP, PEO-SPE and CLASP; (b) LSV curve for CLASP; the first three charge/discharge voltage profiles (c) and cycling performance (d) of the LiFePO4/Li cell using CLASP at 0.1C, 55℃

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Preparation and Property of a Novel Heat-resistant Ceramic Composite Solid-state Electrolyte for Lithium Batteries

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