Polymer electrolytes based on poly(vinylidene fluoride-co-hexafluoropropylene) nanofibrous membranes containing polymer plasticizers for lithium batteries
Artikel i vetenskaplig tidskrift, 2012

Gel polymer electrolytes (GPEs) were prepared with electrospun poly(vinylidene fluoride-co-hexafluoropropylene) [P(VdF-HFP)] nanofibrous membrane containing low molecular-weight polymer plasticizers, poly(ethylene glycol) dimethyl ether (PEGDME, Mw = 250 and 500). The fibers of electrospun membrane were stacked in layers to give fully interconnected pore structure with high porosity. The porous structure acted as a good host matrix to accommodate the polymer plasticizers. Thermogravimetric analysis (TGA) and field emission scanning electron microscope (FE-SEM) were used for thermal and physical characterizations, respectively. The GPEs exhibit high electrolyte uptake, high ionic conductivity, high anodic stability, and low interfacial resistance. Ionic conductivity and electrolyte uptake increased with the decrease in molecular weight of the polymer plasticizer. Prototype cells using electrospun P(VdF-HFP) nanofibrous GPEs with polymer plasticizers showed stable cyclic performances at different C-rates.

Polymer plasticizers

Nanofibrous membrane

cathode

Gel polymer electrolytes

mechanical-properties

liquid

Electrospinning

ionic-conductivity

Lithium

Författare

D. H. Lim

Gyeongsang National University

J. Manuel

Gyeongsang National University

J. H. Ahn

Gyeongsang National University

Jae-Kwang Kim

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Per Jacobsson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Aleksandar Matic

Chalmers, Teknisk fysik, Kondenserade materiens fysik

J. K. Ha

Gyeongsang National University

K. K. Cho

Gyeongsang National University

K. W. Kim

Gyeongsang National University

Solid State Ionics

0167-2738 (ISSN)

Vol. 225 631-635

Ämneskategorier

Fysik

DOI

10.1016/j.ssi.2012.03.028