期刊
JOURNAL OF POWER SOURCES
卷 244, 期 -, 页码 234-239出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.01.148
关键词
Polymer electrolyte; Ionic conductivity; High-temperature lithium-ion battery; Polyimide; Polyethylene oxide
资金
- National Natural Science Foundation of China [21073205, 51225204]
- National Key Project on Basic Research [2011CB935700]
- WCU program through NRF
- MEST [R32-2009-000-20074-0]
- K.C. Wong Education Foundation
In this paper, a new kind of composite polymer electrolyte has been successfully prepared by casting lithium bis(oxalate)borate succinonitrile polyethylene oxide (LiBOB-SN-PEO) polymer electrolyte solution into porous polyimide (PI) nanofibrous films. The obtained LiBOB-SN-PEO- PI composite polymer electrolyte has been characterized by X-ray diffraction, scanning electron microscopy, differential scanning calorimetry and electrochemical impedance spectroscopy technologies in detail. It is found that the interlaced PI fibres in the framework play an important role in achieving a superior high-temperature-tolerance characteristic up to 170 degrees C for the LiBOB-SN-PEO-PI composite polymer electrolyte, which is much higher than that (ca. 100 degrees C) of traditional PEO-based electrolytes. The composite polymer electrolyte also exhibits outstanding high-temperature stability, ensuring a long-term service life in high-temperature lithium-ion batteries. (C) 2013 Elsevier B.V. All rights reserved.
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