scholarly journals Improving the Mechanical Durability of Short-Side-Chain Perfluorinated Polymer Electrolyte Membranes by Annealing and Physical Reinforcement

ACS Omega ◽  
2019 ◽  
Vol 4 (21) ◽  
pp. 19153-19163 ◽  
Author(s):  
Sung-Hee Shin ◽  
Pratama Juniko Nur ◽  
Abdul Kodir ◽  
Da-Hee Kwak ◽  
Hyejin Lee ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Polymer Electrolyte Membranes ◽  
Side Chain ◽  
Short Side ◽  
Electrolyte Membranes ◽  
Mechanical Durability

Fabrication of a polymer electrolyte membrane with uneven side chains for enhancing proton conductivity

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 79593-79601 ◽  
Author(s):  
Yunfeng Zhang ◽  
Cuicui Li ◽  
Xupo Liu ◽  
Zehui Yang ◽  
Jiaming Dong ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Polymer Electrolytes ◽  
Polymer Electrolyte Membrane ◽  
Polymer Electrolyte Membranes ◽  
Side Chains ◽  
Short Side ◽  
Electrolyte Membrane ◽  
Electrolyte Membranes ◽  
Transfer Channels

Enhancement of proton conductivity of polymer electrolyte membranes was achieved by broadening the proton transfer channels via attaching acid groups to both long and short side chains of polymer electrolytes simultaneously.

scholarly journals Synthesis of cross-linked comb-type polysiloxane for polymer electrolyte membranes

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Omar Mukbaniani ◽  
Jimsher Aneli ◽  
Tamara Tatrishvili ◽  
Eliza Markarashvili ◽  
Maia Chigvinadze ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Sol Gel ◽  
Gel Permeation Chromatography ◽  
Catalytic Amount ◽  
Polymer Electrolyte Membranes ◽  
Solid Polymer ◽  
Side Chain ◽  
Differential Scanning Calorimetric ◽  
Anion Receptors ◽  
Electrolyte Membranes

Abstract Hydrosilylation reaction of 2.4.6.8-tetrahydro-2.4.6.8-tetramethylcyclotetrasiloxane with allyl acetoacetate and vinyltriethoxysilane at 1:3:1 ratio of initial compounds in the presence of Karstedt’s catalyst (Pt2[(VinSiMe2)2O]3), platinum hydrochloric acid (0.1 M solution in THF) and platinum on the carbon have been studied and D4R,R’ type methylorganocyclotetrasiloxane has been obtained. Ring-opening co-polymerization reactions of methylorganocyclotetrasiloxane and hexamethyldisiloxane, in the presence of catalytic amount of powder-like potassium hydroxide, have been carried out and linear methylsiloxane oligomer with regular arrangement of propyl acetoacetate and triethoxysilane groups in the side chain has been obtained. The synthesized methylorganocyclotetrasiloxane and oligomers were studied by FTIR, 1H, 13C, 29Si NMR spectroscopy. Comb-type oligomers were characterized by gel-permeation chromatography, wide- angle X-ray and differential scanning calorimetric methods. Via sol-gel processes of doped with lithium trifluoromethylsulfonate (triflate) or lithium bis- (trifluoromethylsulfonyl)imide oligomer systems solid polymer electrolyte membranes have been obtained. The dependence of ionic conductivity as a function of temperature and salt concentration has been studied. The electrical conductivity of these materials at room temperature belongs to the range of 7x10-8 to 4x10-6 S cm-1 and depends on the structures of grafted anion receptors and the polymer backbones.

scholarly journals Composite short-side-chain PFSA electrolyte membranes containing selectively modified halloysite nanotubes (HNTs)

2021 ◽  
Author(s):  
Sahng Hyuck Woo ◽  
Aurélie Taguet ◽  
Belkacem Otazaghine ◽  
Alia Akrout ◽  
Sara Cavaliere ◽  
...  
Keyword(s):  
Halloysite Nanotubes ◽  
Side Chain ◽  
Short Side ◽  
Electrolyte Membranes
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