High electrochemical stability of polyvinylidene fluoride (PVDF) porous membranes using phase inversion methods for lithium-ion batteries

Synthesis and Characterization of a Composite Anion Exchange Membrane for Water Electrolyzers (AEMWE)

“…The performance of the membrane is then profoundly influenced by the supporting structure and the ionomer coupled together, so investigating the material and techniques to fabricate the backbone and activate it with different ionomers is a very interesting approach to developing AEMs. A supporting structure that can be used for this purpose is Celgard ® , a typical polypropylene (PP) microporous membrane separator that is recognized for use in batteries [ 47 , 48 ]. PP is a low-cost polymer that is widely used for microporous membrane fabrication globally because of significant properties such as good thermal and mechanical stability and high resistance to extreme pH conditions [ 43 , 44 ].…”

“…Phase inversion is an established technique commonly used for preparing membrane nano/microstructures. It is referred to as a chemical process in which a polymer is transformed from a liquid state to a solid state [ 48 , 52 ]. We used the commercially available ionomer solution Fumion (Fumatech Co., Bietigheim-Bissingen, Germany) with a QA functional group.…”

Smart and Multifunctional Materials Based on Electroactive Poly(vinylidene fluoride): Recent Advances and Opportunities in Sensors, Actuators, Energy, Environmental, and Biomedical Applications

“…It was verified that the use of ethanol as a nonsolvent results in more uniform membranes with higher porosity, all produced membranes showing good electrochemical stability and cycling. 456 PVDF membranes with different pore sizes and pore size distributions have been developed by melt blowing, electrospinning, and shear spinning. It was verified that shear spinning is a suitable emerging method to manufacture nanofibrous materials with morphology control from fibrous-like to nanosheet-like membranes, allowing tailoring of electrochemical cell response.…”

One-step fabrication of robust lithium ion battery separators by polymerization-induced phase separation

“…These methods have been reviewed in-depth over the last ten years. 6,12,16,17 At the laboratory scale, the vast majority of microporous separators are fabricated from polymer solutions using pre-synthesized polymers and some method of phase inversion, including thermally-induced phase separation (TIPS), 18,19 evaporationinduced phase separation, 20,21 non-solvent induced phase separation (NIPS), [22][23][24][25][26][27][28][29][30][31] and other mechanisms. [32][33][34][35][36] These methods are similar in that they require multiple processing steps, such as solution casting of a lm followed by solvent extraction, which are both energy-intensive and timeconsuming.…”