TY - JOUR
T1 - PEGDA/PVdF/F127 gel type polymer electrolyte membranes for lithium secondary batteries
AU - Wang, Yan Jie
AU - Kim, Dukjoon
PY - 2007/3/30
Y1 - 2007/3/30
N2 - A novel porous gel polymer electrolyte (GPE) membrane based on poly(ethylene glycol) diacrylate (PEGDA), poly(vinylidene fluoride) (PVdF), and polyethylene oxide-co-polypropylene oxide-co-polyethylene oxide (PEO-PPO-PEO, F127) was fabricated by a phase inversion technique. The PEGDA cross-linking oligomer could be randomly mixed with unraveled PVdF polymer chains to form the interpenetrating polymer network (IPN) structure. Several experimental techniques including infrared (IR) spectra, differential scanning calorimetry (DSC), thermogravimetric analyzer (TGA), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and potentiostat/galvanostat were employed to investigate the characteristics of the polymer membranes. PEGDA and F127 influenced the porous size and structure. The mechanical strength and flexibility of the membrane were controlled by its composition. The membrane with the composition of PEGDA/PVdF/F127 (0/4/4) showed the highest electrolyte uptake of 152.6% and the maximum ionic conductivity of 2.0 × 10-3 S cm-1 at room temperature. All GPEs prepared in this study were electrochemically stable up to 4.5 V.
AB - A novel porous gel polymer electrolyte (GPE) membrane based on poly(ethylene glycol) diacrylate (PEGDA), poly(vinylidene fluoride) (PVdF), and polyethylene oxide-co-polypropylene oxide-co-polyethylene oxide (PEO-PPO-PEO, F127) was fabricated by a phase inversion technique. The PEGDA cross-linking oligomer could be randomly mixed with unraveled PVdF polymer chains to form the interpenetrating polymer network (IPN) structure. Several experimental techniques including infrared (IR) spectra, differential scanning calorimetry (DSC), thermogravimetric analyzer (TGA), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and potentiostat/galvanostat were employed to investigate the characteristics of the polymer membranes. PEGDA and F127 influenced the porous size and structure. The mechanical strength and flexibility of the membrane were controlled by its composition. The membrane with the composition of PEGDA/PVdF/F127 (0/4/4) showed the highest electrolyte uptake of 152.6% and the maximum ionic conductivity of 2.0 × 10-3 S cm-1 at room temperature. All GPEs prepared in this study were electrochemically stable up to 4.5 V.
KW - Gel polymer electrolyte
KW - Interpenetrating polymer network
KW - Ionic conductivity
KW - Membrane
KW - Phase inversion
UR - https://www.scopus.com/pages/publications/33847680033
U2 - 10.1016/j.jpowsour.2007.01.016
DO - 10.1016/j.jpowsour.2007.01.016
M3 - Article
AN - SCOPUS:33847680033
SN - 0378-7753
VL - 166
SP - 202
EP - 210
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 1
ER -
