Properties on novel PVDF‐HFP‐based composite polymer electrolyte with vinyltrimethoxylsilane‐modified ZSM‐5

Abstract

A kind of novel poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-based composite polymer electrolyte doped with vinyltrimethoxylsilane (DB171 silane)-modified ZSM-5 is prepared by phase inversion method (denoted as M-ZSM-5 membrane). Physical and chemical properties of M-ZSM-5 membrane are studied by SEM, FTIR, TG-DSC, EIS, and LSV. The results show that thermal and electrochemical stability can reach 4008C and 5 V, respectively; temperature dependence of ionic conductivity follows Vogel-Tamman-Fulcher relation and ionic conductivity at room temperature is up to 4.2 mS/cm; the interfacial resistance reaches a stable value about 325 O after 5 days storage at room temperature, which suggests that it can be potentially suitable as electrolyte in polymer lithium ion battery. POLYM. COMPOS.,

Organosulfonic acid functionalized zeolite ZSM-5 as temperature tolerant proton conducting material

“…Currently, development of organic-inorganic composite membranes as alternative to Nafion Ò has been an active area in the field. The following are some examples of organicinorganic composites that were reported in the literature, vinyltrimethoxylsilane-modified ZSM-5 [6], silicalite-1/SPEEK [7] and ZSM-5/Nafion composites [8e10].…”

Effect of various electrophoretically deposited nano‐silica contents on the properties of poly(vinylidene fluoride‐co‐hexafluoropropylene)‐based electrospun polymer electrolytes

“…The mechanical tensile strength of the electrospun membrane is obviously superior to that prepared by the phase inversion method, which may be attributed to the excellent three‐dimensional network of nanofibers. The mechanical tensile strength of membranes with SiO 2 electrophoretic deposition shows improvement to a greater extent, which is attributed to the function of the added inert oxide as elaborated in our previous work . As listed in Table , the CPE membrane with electrophoretically deposited SiO 2 at 2 wt% and 4 wt% presents a higher tensile strength of about 28.34 and 27.61 MPa, respectively.…”

“…The mechanical tensile strength of membranes with SiO 2 electrophoretic deposition shows improvement to a greater extent, which is attributed to the function of the added inert oxide as elaborated in our previous work. 8 As listed in Table 1, the CPE membrane with electrophoretically deposited SiO 2 at 2 wt% and 4 wt% presents a higher tensile strength of about 28.34 and 27.61 MPa, respectively. However, for the membrane with 8 wt% content the tensile strength decreases to 21.36 MPa, which may be due to the layered peeling of the electrophoretically deposited layer.…”

“…Nowadays, many measures have been taken to overcome these shortcomings. Among these, adding inert inorganic oxide into the polymer matrix has been proved to be a simple and feasible way to enhance significantly the ionic conductivity and mechanical performance of the polymer electrolyte . However, the serious agglomeration of the added particles on the surface of the polymer matrix was confirmed to weaken the performance of the polymer electrolyte to some extent .…”

Preparation and physicochemical performances of poly[(vinylidene fluoride)‐co‐hexafluoropropylene]‐based composite polymer electrolytes doped with modified carbon nanotubes

“…Generally speaking, polymer electrolytes can be classified into two categories: gel polymer electrolytes (GPEs) and composite polymer electrolytes (CPEs) . GPEs mainly comprise polymer matrices, entrapped liquid electrolytes and appropriate additives, in which the entrapped liquid electrolytes can provide free lithium ions and the additives enhance battery performances . However, the softening effects of liquid electrolytes lead to inferior mechanical performances of the polymer matrices preventing many practical applications of GPEs …”