Ba-MOFs with tetrazole-based acetic acids: unusual configuration, novel topology and high proton conductivity

2021 ◽  
Author(s):  
Jie Yang ◽  
Shunlin Zhang ◽  
Zhe Feng ◽  
Ying Cao ◽  
Dunru Zhu
Keyword(s):  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Metal Organic Frameworks ◽  
Proton Exchange ◽  
High Proton Conductivity ◽  
Conductive Materials ◽  
High Proton ◽  
Metal Organic ◽  
Exchange Membrane ◽  
Acetic Acids

Metal-organic frameworks (MOFs) as proton conductive materials have attracted increasing attention due to their applications in proton-exchange membrane fuel cells. While the majority of the MOFs are based on transition...

Extra Water- and Acid-Stable MOF-801 with High Proton Conductivity and Its Composite Membrane for Proton-Exchange Membrane

2018 ◽  
Vol 10 (34) ◽  
pp. 28656-28663 ◽  
Author(s):  
Jin Zhang ◽  
Hui-Juan Bai ◽  
Qiu Ren ◽  
Hong-Bin Luo ◽  
Xiao-Ming Ren ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Composite Membrane ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
High Proton Conductivity ◽  
High Proton ◽  
Exchange Membrane ◽  
Acid Stable

A sulfonated polybenzophenone/polyimide copolymer as a novel proton exchange membrane

RSC Advances ◽  
2015 ◽  
Vol 5 (62) ◽  
pp. 50082-50086 ◽  
Author(s):  
Takahiro Miyahara ◽  
Junpei Miyake ◽  
Soichi Matsuno ◽  
Masahiro Watanabe ◽  
Kenji Miyatake
Keyword(s):  
Fuel Cell ◽  
Block Copolymer ◽  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Gas Permeability ◽  
Proton Exchange ◽  
High Proton Conductivity ◽  
High Proton ◽  
Exchange Membrane

A sulfonated polybenzophenone/polyimide block copolymer membrane exhibited high proton conductivity, good dimensional and mechanical stabilities, and low gas permeability, which are attractive for fuel cell applications.

Facile One-step Preparation of Mesoporous Siliceous phophsomolybdic acid for Proton Exchange Membrane

2021 ◽  
Vol 13 ◽  
Author(s):  
Hamid Ilbeygi
Keyword(s):  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
High Surface ◽  
Phosphomolybdic Acid ◽  
Pem Fuel Cells ◽  
Proton Exchange ◽  
Polymeric Surfactant ◽  
High Proton Conductivity ◽  
High Proton ◽  
Exchange Membrane

Background: Proton exchange membrane is art of PEM fuel cells, developing active materials with robust structure and high proton conductivity has attained huge attention in recent decade amongst researchers. Aims/objectives: Here we have developed a novel approach to prepare a siliceous mesoporous heteropoly acid with high stability in polar media and high proton conductivity to be utilized as proton exchange membrane. Methods: A highly stable mesoporous siliceous phosphomolybdic acid has been synthesized via a simple self-assembly between phosphomolybdic acid (PMA), the polymeric surfactant, and the silica precursor stabilized by KCl molecules as a proton conducting material for proton exchange membrane application. Results: As prepared siliceous mesoporous phosphomolybdic acids (mPMA-Si) show a high surface area with a highly crystalline structure, however the crystallinity reduced by increasing the silica content. Further analysis proved the Keggin structure remain intact in final materials. mPMA-8 Si shows the highest performance among all the materials studied with proton conductivity of 0.263 S.cm-1 at 70 oC. Conclusion: As prepared mPMA-xSi has shown a very high proton conductivity in a range of temperatures which make them a promising material for proton exchange membrane.

Metal–organic frameworks derived from a semi-rigid anthracene-based ligand and sulfonates: proton conductivity and dye degradation studies

CrystEngComm ◽  
2021 ◽  
Author(s):  
Aurobinda Mohanty ◽  
Udai P. Singh ◽  
Arijit Ghorai ◽  
Susanta Banerjee ◽  
R. J. Butcher
Keyword(s):  
Methylene Blue ◽  
Relative Humidity ◽  
Proton Conductivity ◽  
Dye Degradation ◽  
Metal Organic Frameworks ◽  
High Proton Conductivity ◽  
Methylene Blue Degradation ◽  
High Proton ◽  
Metal Organic ◽  
Degradation Studies

The MOFs were constructed by ligand AHP and sulfonate analogues. MOF4 exhibits a high proton conductivity of 1.95 × 10−3 S cm−1 at 95 °C and 98% relative humidity. MOFs 1–5 also serve as photocatalysts for methylene blue degradation.

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