Fire-retardant solid polymer electrolyte films prepared from oxetane derivative with dimethyl phosphate ester group

JOURNAL OF POWER SOURCES

卷:202

Article

Shibutani, Ryo¹  Tsutsumi, Hiromori¹ 

[1] Yamaguchi Univ, Grad Sch Med, Ube, Yamaguchi 7558611, Japan

关键词: Poly(oxetane);    Fire retardant;    Self-extinguishable polymer;    Lithium battery;    Solid polymer electrolyte;   

DOI  :  10.1016/j.jpowsour.2011.11.046

来源: Elsevier

【 摘 要 】

Fire-retardant polymer electrolytes are key materials for safer operation of lithium secondary batteries and other large-size batteries than the batteries with organic liquid electrolyte. Solid polymer electrolyte systems with fire-retardant polymer matrixes have been investigated in only few cases. We prepare an oxetane derivative with dimethyl phosphate ester group (DPOX). The cross-linked poly(oxetane) matrixes for solid polymer electrolytes are prepared from DPOX and oxetane-based cross-linker (DDOE). DDOE has two oxetane rings at both of the ends of oligo-ethylene oxide chain. Conductivities in the range of 10(-5) S cm(-1) have been obtained for self-extinguishing, ion-conductive cross-linked poly(oxetane) matrix with DPOX and DDOE monomers. Polarization behavior of a lithium electrode in the cross-linked poly(oxetane)-based electrolyte films is also investigated. The polarization curves show some hysteresis character with potential steps, however, deposition and stripping of lithium on the lithium electrode are observed. (C) 2011 Elsevier B.V. All rights reserved.

【 授权许可】

Free