Journal
ELECTROCHIMICA ACTA
Volume 258, Issue -, Pages 1329-1335Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.11.191
Keywords
Gel polymer electrolytes; Lithium-ion battery; Poly(vinylidene difluoride); Crosslinked polymers; Electrospinning
Categories
Funding
- Ministry of Science and Technology, Taiwan [MOST 105-2221-E-007-138-MY3]
Ask authors/readers for more resources
Gel polymer electrolyte (GPE), possessing a polymer matrix and embedded liquid electrolyte, is a critical component of lithium-ion batteries. To enhance GPE performance, in this work a self-crosslinkable poly(vinylidene difluoride) (PVdF) graft copolymer possessing Meldrum's acid (MA) groups as reactive sites has been prepared with atom transfer radical polymerization and utilized as a polymer matrix for GPEs. Compared to neat PVdF based GPEs, incorporation of MA groups to PVdF chains simultaneously brings crosslinking characteristic and high polarity to PVdF chains so as to enhance the thermal stability, mechanical strength, and polymer matrix-electrolyte affinity of the corresponding GPEs. The prepared GPE has an ionic conductivity of about 1.48 mS cm(-1), which is higher than the value of 0.98 mS cm(-1) measured on commercial Celgard 2325 (R) separator. Moreover, good Li-ion battery performance, including high discharge capacity (136 mAh g(-1) at 0.2 C) and high capacity retention at high C-rates (66% at 10 C and 50% at 15 C), has been recorded with the prepared GPE based LIBs, demonstrating the application potential of the developed GPE for fast-charging lithium-ion batteries. (C) 2017 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available