scholarly journals Acidity effects of medium fluids on anhydrous proton conductivity of acid-swollen block polymer electrolyte membranes

RSC Advances ◽  
2021 ◽  
Vol 11 (31) ◽  
pp. 19012-19020
Author(s):  
Takato Kajita ◽  
Atsushi Noro ◽  
Takahiro Seki ◽  
Yushu Matsushita ◽  
Naoki Nakamura
Keyword(s):  
Sulfuric Acid ◽  
Phosphoric Acid ◽  
Temperature Dependence ◽  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Polymer Membranes ◽  
Polymer Electrolyte Membranes ◽  
Block Polymer ◽  
Electrolyte Membranes

Sulfuric acid-swollen block polymer membranes exhibit anhydrous conductivities of ∼0.1 S cm−1 that is higher than those of phosphoric acid-swollen membranes, whereas temperature dependence of conductivities of the latter is stronger than the former.

Proton Conductivity of Polymer Electrolyte Membranes during Transient Hydration and Dehydration Cycles

2019 ◽  
Vol 41 (1) ◽  
pp. 1381-1392
Author(s):  
William A. Rigdon ◽  
Xinyu Huang ◽  
Daniel S. Hussey ◽  
David L. Jacobson
Keyword(s):  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membranes ◽  
Hydration And Dehydration

Preparation of the crosslinked polymer electrolyte membranes based on a hyperbranched poly(amidoamine) and their proton conductivity

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Yongwen Zhang ◽  
Wei Huang ◽  
Yongfeng Zhou ◽  
Deyue Yan
Keyword(s):  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Polymer Electrolyte Membranes ◽  
Crosslinked Polymer ◽  
Hyperbranched Poly ◽  
High Proton ◽  
Electrolyte Membranes ◽  
Potential Applications ◽  
Amine Groups ◽  
Transport Channels

AbstractA series of novel crosslinked polymer electrolyte membranes were successfully prepared based on the modification of a hyperbranched poly(amidoamine) with terminal vinyl groups. The membranes possessed the different contents of proton-generating sites (i.e., protonated tertiary amine groups) and triflate (Tf2N-) in the crosslinked network. They showed good mechanical and thermal stability. The water uptakes of them were ca. 8.4-24.5%. Their proton conductivity was of the order of ca. 10-5-10-2 S/cm in the range of 30-80 °C, and the proton conductivity increased with improving the protonation ratio. AFM results disclosed the micro-phase separation of the hydrophilic proton-generating sites and the hydrophobic domains of Tf2N- ions. The resulting locally continuous hydrophilic clusters could provide proton transport channels to produce the high proton conductivity. This kind of polymer electrolyte membranes may have potential applications in PEFCs and other electrochemical fields.

Proton Conductivity and Partial Molar Volume of Different Polymer Electrolyte Membranes

2019 ◽  
Vol 41 (1) ◽  
pp. 1545-1553 ◽  
Author(s):  
Yujia Bai ◽  
Manale Maalouf ◽  
Alexander Papandrew ◽  
Thomas A. Zawodzinski
Keyword(s):  
Molar Volume ◽  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Partial Molar Volume ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membranes

Development of novel polymer electrolyte membranes based on a benzothiadiazole unit

RSC Advances ◽  
2016 ◽  
Vol 6 (101) ◽  
pp. 99433-99436 ◽  
Author(s):  
Shuntaro Amari ◽  
Shinji Ando ◽  
Takeo Yamaguchi
Keyword(s):  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Polymer Electrolyte Membranes ◽  
Aromatic Polymer ◽  
Electrolyte Membranes

We developed novel aromatic polymer electrolyte membranes based on the benzothiadiazole unit with high swelling resistance and proton conductivity.

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 Phosphoric Acid Dynamics in High Temperature Polymer Electrolyte Membranes

2020 ◽  
Vol 167 (13) ◽  
pp. 134507
Author(s):  
David Aili ◽  
Hans Becker ◽  
Uwe Reimer ◽  
Jens Wenzel Andreasen ◽  
Lars N. Cleemann ◽  
...  
Keyword(s):  
High Temperature ◽  
Phosphoric Acid ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membranes
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