TY - JOUR
T1 - Preparation and characterization of gel polymer electrolyte based on electrospun polyhedral oligomeric silsesquioxane-poly(methyl methacrylate)8/polyvinylidene fluoride hybrid nanofiber membranes for lithium-ion batteries
AU - Liu, Yi
AU - Ma, Xiaoyan
AU - Sun, Kun
AU - Yang, Kaiqi
AU - Chen, Fang
N1 - Publisher Copyright:
© 2017, Springer-Verlag GmbH Germany.
PY - 2018/2/1
Y1 - 2018/2/1
N2 - As a kind of organic–inorganic hybrid materials with nanocage structure, polyhedral oligomeric silsesquioxane (POSS) has the advantages of good interaction with polymer and excellent thermal and mechanical stability. Star-shaped polyhedral POSS-poly(methyl methacrylate) (POSS-(PMMAn)8) with different molecular weights had been synthesized by sequential atom transfer radical polymerization (ATRP) with POSS-(C3H6Cl)8 as the initiator. Electrospun polyvinylidene fluoride (PVDF) composite gel polymer electrolytes (GPEs) modified by POSS-(PMMAn)8 were prepared, and their electrochemical and mechanical properties were assessed. The POSS-(PMMAn)8 particles were found to improve thermal stability and mechanical strength of the GPEs without decreasing electrochemical properties. Among all composite GPEs studied, the best comprehensive performance was obtained from PVDF-[POSS-(PMMA46)8] GPE: the porosity was 60.0%, and the tensile strength and the elongation at break were 4.94 MPa and 52.2%, respectively. Besides, the ionic conductivity was 4.85 × 10−3S cm−1 at room temperature, the electrochemical window could reach 6.0 V, and the interfacial impedance with Li electrode was 256.15 Ω. The cells with POSS-(PMMA)8-modified composite electrolytes also have good cycle performance. These results suggest that the PVDF-[POSS-(PMMA)8] composite GPEs are suitable for lithium-ion battery applications.
AB - As a kind of organic–inorganic hybrid materials with nanocage structure, polyhedral oligomeric silsesquioxane (POSS) has the advantages of good interaction with polymer and excellent thermal and mechanical stability. Star-shaped polyhedral POSS-poly(methyl methacrylate) (POSS-(PMMAn)8) with different molecular weights had been synthesized by sequential atom transfer radical polymerization (ATRP) with POSS-(C3H6Cl)8 as the initiator. Electrospun polyvinylidene fluoride (PVDF) composite gel polymer electrolytes (GPEs) modified by POSS-(PMMAn)8 were prepared, and their electrochemical and mechanical properties were assessed. The POSS-(PMMAn)8 particles were found to improve thermal stability and mechanical strength of the GPEs without decreasing electrochemical properties. Among all composite GPEs studied, the best comprehensive performance was obtained from PVDF-[POSS-(PMMA46)8] GPE: the porosity was 60.0%, and the tensile strength and the elongation at break were 4.94 MPa and 52.2%, respectively. Besides, the ionic conductivity was 4.85 × 10−3S cm−1 at room temperature, the electrochemical window could reach 6.0 V, and the interfacial impedance with Li electrode was 256.15 Ω. The cells with POSS-(PMMA)8-modified composite electrolytes also have good cycle performance. These results suggest that the PVDF-[POSS-(PMMA)8] composite GPEs are suitable for lithium-ion battery applications.
KW - Electrospun
KW - Gel polymer electrolyte
KW - Lithium-ion battery
KW - Polyhedral oligomeric silsesquioxane (POSS)
UR - http://www.scopus.com/inward/record.url?scp=85030843219&partnerID=8YFLogxK
U2 - 10.1007/s10008-017-3761-6
DO - 10.1007/s10008-017-3761-6
M3 - 文章
AN - SCOPUS:85030843219
SN - 1432-8488
VL - 22
SP - 581
EP - 590
JO - Journal of Solid State Electrochemistry
JF - Journal of Solid State Electrochemistry
IS - 2
ER -
