Structural features of proton-conducting metal organic and covalent organic frameworks

CrystEngComm ◽  
2020 ◽  
Vol 22 (39) ◽  
pp. 6425-6443
Author(s):  
Pampa Jhariat ◽  
Priyanka Kumari ◽  
Tamas Panda
Keyword(s):  
Fuel Cells ◽  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Structural Features ◽  
Proton Conduction ◽  
Proton Exchange ◽  
Covalent Organic Frameworks ◽  
Short Overview ◽  
Metal Organic ◽  
Exchange Membrane

Proton conductivity in MOFs and COFs have been attracted due to their applicability as electrolytes in proton exchange membrane fuel cells. A short overview with recent updates on the structural features of MOFs and COFs for proton conduction are presented here.

UiO-66 derivatives and their composite membranes for effective proton conduction

2020 ◽  
Vol 49 (47) ◽  
pp. 17130-17139
Author(s):  
Lu Feng ◽  
Hao-Bo Hou ◽  
Hong Zhou
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Metal Organic Frameworks ◽  
Composite Membranes ◽  
Proton Conduction ◽  
Proton Exchange ◽  
Proton Conducting ◽  
Conducting Materials ◽  
Metal Organic ◽  
Exchange Membrane

As newly emerging proton-conducting materials, metal–organic frameworks (MOFs) have been attracting wide attention in the field of proton exchange membrane fuel cells.

Polybenzimidazole/strontium cerate nanocomposites with enhanced proton conductivity for proton exchange membrane fuel cells operating at high temperature

2015 ◽  
Vol 154 ◽  
pp. 370-378 ◽  
Author(s):  
Akbar Shabanikia ◽  
Mehran Javanbakht ◽  
Hossein Salar Amoli ◽  
Khadijeh Hooshyari ◽  
Morteza Enhessari
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Exchange Membrane ◽  
Strontium Cerate

scholarly journals Ameliorated Performance of Sulfonated Poly(Arylene Ether Sulfone) Block Copolymers with Increased Hydrophilic Oligomer Ratio in Proton-Exchange Membrane Fuel Cells Operating at 80% Relative Humidity

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1871 ◽  
Author(s):  
Ae Kim ◽  
Mohanraj Vinothkannan ◽  
Kyu Lee ◽  
Ji Chu ◽  
Sumg Ryu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Relative Humidity ◽  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Exchange Capacity ◽  
Proton Exchange ◽  
Arylene Ether ◽  
Poly Condensation ◽  
Exchange Membrane ◽  
Sulfonated Poly

We designed and synthesized a series of sulfonated poly(arylene ether sulfone) (SPES) with different hydrophilic or hydrophobic oligomer ratios using poly-condensation strategy. Afterward, we fabricated the corresponding membranes via a solution-casting approach. We verified the SPES membrane chemical structure using nuclear magnetic resonance (1H NMR) and confirmed the resulting oligomer ratio. Field-emission scanning electron microscope (FE-SEM) and atomic force microscope (AFM) results revealed that we effectively attained phase separation of the SPES membrane along with an increased hydrophilic oligomer ratio. Thermal stability, glass transition temperature (Tg) and membrane elongation increased with the ratio of hydrophilic oligomers. SPES membranes with higher hydrophilic oligomer ratios exhibited superior water uptake, ion-exchange capacity, contact angle and water sorption, while retaining reasonable swelling degree. The proton conductivity results showed that SPES containing higher amounts of hydrophilic oligomers provided a 74.7 mS cm−1 proton conductivity at 90 °C, which is better than other SPES membranes, but slightly lower than that of Nafion-117 membrane. When integrating SPES membranes with proton-exchange membrane fuel cells (PEMFCs) at 60 °C and 80% relative humidity (RH), the PEMFC power density exhibited a similar increment-pattern like proton conductivity pattern.

Stereochemistry-Dependent Proton Conduction in Proton Exchange Membrane Fuel Cells

Langmuir ◽  
2015 ◽  
Vol 32 (1) ◽  
pp. 359-365 ◽  
Author(s):  
Ravikumar Thimmappa ◽  
Mruthyunjayachari Chattanahalli Devendrachari ◽  
Alagar Raja Kottaichamy ◽  
Omshanker Tiwari ◽  
Pramod Gaikwad ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Proton Conduction ◽  
Proton Exchange ◽  
Exchange Membrane
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