Phosphotungstic acid functionalized silica nanocomposites with tunable bicontinuous mesoporous structure and superior proton conductivity and stability for fuel cells

2011 ◽  
Vol 13 (21) ◽  
pp. 10249 ◽  
Author(s):  
Jie Zeng ◽  
Yuhua Zhou ◽  
Lin Li ◽  
San Ping Jiang
Keyword(s):  
Fuel Cells ◽  
Proton Conductivity ◽  
Phosphotungstic Acid ◽  
Mesoporous Structure ◽  
Functionalized Silica ◽  
Silica Nanocomposites

scholarly journals Composite Proton Electrolyte Membranes C Poly Ether-Ether Ketone (SPEEK) at Various Amount of Mesoporous Phosphotungstic Acid (mPTA) for Hydrogen Fuel Cell Application

2020 ◽  
Vol 24 (3) ◽  
Author(s):  
Shaymala Mehanathan ◽  
Hilmi Mohamed ◽  
Juhana Jaafar ◽  
Hamid Ilbeygi
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Elevated Temperatures ◽  
Phosphotungstic Acid ◽  
High Surface ◽  
Proton Exchange ◽  
Water Evaporation ◽  
Hydrogen Fuel Cell ◽  
Electrolyte Membranes

Polymer electrolyte membrane fuel cells (PEMFC), also known as proton exchange membrane fuel cells utilise polymer electrolyte membranes (PEMs) to conduct protons for ion-exchange purposes. Nafion is a common polymeric material to be used as PEM for fuel cells. However, Nafion has major weaknesses such as low proton conductivity under anhydrous conditions at elevated temperatures due to water evaporation and continuous need for water management, low tolerance for fuel impurities and high cost. This study fabricates a newly composite PEM by blending SPEEK and mesoporous phosphotungstic acid (mPTA) at various loading in order to obtain the most favourable PEMFC power output. SP/2.0mPTA membrane has shown outstanding properties in terms of dense structure, 35.75% of water uptake and expected an elemental mapping of 76.20% Tungsten and 23.80% Phosphorus. Even with a lower proton conductivity of 3.502 mScm-1, this membrane has a higher power density of 154.4 mW/cm2 compared to the other four membranes. Owing to the unique characteristics of the as-synthesized mPTA such as high surface area, porous structure, good thermal and chemical resistance, SPEEK-mPTA membrane is one of the promising materials for PEMFC applications.   

‘Proton Escalator’ PEI and Phosphotungstic Acid Constructing a Nanofiber Membrane with Remarkable Proton Conductivity

2021 ◽  
Author(s):  
Xiuwei Sun ◽  
Shumei Liu ◽  
Qingyin Wu ◽  
Shan Zhang ◽  
Hong-Rui Tian ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Phosphotungstic Acid ◽  
Proton Conduction ◽  
High Density ◽  
Nanofiber Membrane ◽  
New Type ◽  
High Flexibility

Polyethyleneimine (PEI) is expected to become a new type of proton conduction booster due to its high density amine and extremely high flexibility. Herein, a nanofiber membrane (eHPW-PEI) composed of...

Improvement of proton conductivity of magnetically aligned phosphotungstic acid-decorated cobalt oxide embedded Nafion membrane

Energy ◽  
2021 ◽  
pp. 121940
Author(s):  
K. Pourzare ◽  
Y. Mansourpanah ◽  
S. Farhadi ◽  
M. M. Hasani Sadrabadi ◽  
M. Ulbricht
Keyword(s):  
Cobalt Oxide ◽  
Proton Conductivity ◽  
Phosphotungstic Acid ◽  
Nafion Membrane ◽  
Magnetically Aligned
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