Oriented proton-conductive nano-sponge-facilitated polymer electrolyte membranes

2020 ◽  
Vol 13 (1) ◽  
pp. 297-309 ◽  
Author(s):  
Xin Liu ◽  
Junfeng Zhang ◽  
Chenyang Zheng ◽  
Jiandang Xue ◽  
Tong Huang ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Polymer Electrolyte ◽  
Water Retention ◽  
Polymer Electrolyte Membranes ◽  
Freezable Water ◽  
Electrolyte Membranes

Aligned nano-sponges accommodate only non-freezable water and facilitate efficient water retention in the membrane, even under low relative humidity conditions.

Increased Water Retention in Polymer Electrolyte Membranes at Elevated Temperatures Assisted by Capillary Condensation

Nano Letters ◽  
2007 ◽  
Vol 7 (11) ◽  
pp. 3547-3552 ◽  
Author(s):  
Moon Jeong Park ◽  
Kenneth H. Downing ◽  
Andrew Jackson ◽  
Enrique D. Gomez ◽  
Andrew M. Minor ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Water Retention ◽  
Elevated Temperatures ◽  
Capillary Condensation ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membranes

scholarly journals Fabrication and Electrolyte Characterizations of Nanofiber Framework-Based Polymer Composite Membranes with Continuous Proton Conductive Pathways

Membranes ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 90
Author(s):  
Takeru Wakiya ◽  
Manabu Tanaka ◽  
Hiroyoshi Kawakami
Keyword(s):  
Relative Humidity ◽  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Composite Membrane ◽  
Composite Membranes ◽  
Polymer Electrolyte Membranes ◽  
Barrier Property ◽  
Compression Process ◽  
Gas Barrier ◽  
Electrolyte Membranes

For future fuel cell operations under high temperature and low- or non-humidified conditions, high-performance polymer electrolyte membranes possessing high proton conductivity at low relative humidity as well as suitable gas barrier property and sufficient membrane stability are strongly desired. In this study, novel nanofiber framework (NfF)-based composite membranes composed of phytic acid (Phy)-doped polybenzimidazole nanofibers (PBINf) and Nafion matrix electrolyte were fabricated through the compression process of the nanofibers. The NfF composite membrane prepared from the pressed Phy-PBINf showed higher proton conductivity and lower activation energy than the conventional NfF composite and recast-Nafion membranes, especially at low relative humidity. It is considered that the compression process increased the nanofiber contents in the composite membrane, resulting in the construction of the continuously formed effective proton conductive pathway consisting of the densely accumulated phosphoric acid and sulfonic acid groups at the interface of the nanofibers and the Nafion matrix. Since the NfF also improved the mechanical strength and gas barrier property through the compression process, the NfF composite polymer electrolyte membranes have the potential to be applied to future fuel cells operated under low- or non-humidified conditions.

Synthesis and electrochemical investigations of ABPBI grafted montmorillonite based polymer electrolyte membranes for PEMFC applications

2021 ◽  
Vol 164 ◽  
pp. 709-728 ◽  
Author(s):  
Faizah Altaf ◽  
Rida Batool ◽  
Rohama Gill ◽  
Zohaib Ur Rehman ◽  
Hammad Majeed ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membranes
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