Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
12039543 | Materials Letters | 2019 | 12 Pages |
Abstract
In this work, a novel nanofiber composite membrane constituting poly (vinylidene fluoride-co-hexafluoropropylene)/poly-m-phenyleneiso-phthalamide (PVDF-HFP/PMIA) was successfully fabricated through one-step electrospinning technique. The PVDF-HFP/PMIA nanofibers possessed low average diameter and uniform diameter distribution, which were able to be acted as matrix for gel polymer electrolyte. Significantly, the presence of PVDF-HFP endowed PMIA membrane with considerable high electrolyte uptake and porosity, eminent mechanical strength and remarkable thermal shrinkage resistance. Compared with pure PMIA and polyethylene separators, the PVDF-HFP/PMIA separator obtained higher ionic conductivity, lower interfacial resistance and more stable electrochemical window. The Li/LiCoO2 battery with the prepared separator reflected admirable cycle stability with outstanding first discharge capacity up to 153.8â¯mAhâ¯gâ1 at 0.5C rate and superior capacity retention of 88.75% after 100â¯cycles.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Huijuan Zhao, Nanping Deng, Jingge Ju, Zongjie Li, Weimin Kang, Bowen Cheng,