Effect of polymer sulfonation on the proton conductivity and fuel cell performance of polyvinylalcohol-mordenite direct methanol fuel cell membranes

2017 ◽  
Vol 12 (5) ◽  
pp. 682-693 ◽  
Author(s):  
Fehmi Görkem Üçtuğ ◽  
Jinan Nijem
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Direct Methanol Fuel Cell ◽  
Cell Membranes ◽  
Cell Performance ◽  
Fuel Cell Membranes ◽  
Fuel Cell Performance ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Direct methanol fuel cell performance of sulfonated polyimide membranes

2009 ◽  
Vol 194 (2) ◽  
pp. 674-682 ◽  
Author(s):  
Zhaoxia Hu ◽  
Takahiro Ogou ◽  
Makoto Yoshino ◽  
Otoo Yamada ◽  
Hidetoshi Kita ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Cell Performance ◽  
Fuel Cell Performance ◽  
Sulfonated Polyimide ◽  
Direct Methanol ◽  
Methanol Fuel Cell ◽  
Polyimide Membranes

A Model of a High-Temperature Direct Methanol Fuel Cell

2013 ◽  
Vol 10 (5) ◽  
Author(s):  
K. Scott ◽  
S. Pilditch ◽  
M. Mamlouk
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Proton Exchange Membrane ◽  
Open Circuit ◽  
Proton Exchange ◽  
Cell Performance ◽  
Effect Of Temperature ◽  
Fuel Cell Performance ◽  
Direct Methanol ◽  
Methanol Fuel Cell

A steady-state, isothermal, one-dimensional model of a direct methanol proton exchange membrane fuel cell (PEMFC), with a polybenzimidazole (PBI) membrane, was developed. The electrode kinetics were represented by the Butler–Volmer equation, mass transport was described by the multicomponent Stefan–Maxwell equations and Darcy's law, and the ionic and electronic resistances described by Ohm's law. The model incorporated the effects of temperature and pressure on the open circuit potential, the exchange current density, and diffusion coefficients, together with the effect of water transport across the membrane on the conductivity of the PBI membrane. The influence of methanol crossover on the cathode polarization is included in the model. The polarization curves predicted by the model were validated against experimental data for a direct methanol fuel cell (DMFC) operating in the temperature range of 125–175 °C. There was good agreement between experimental and model data for the effect of temperature and oxygen/air pressure on cell performance. The fuel cell performance was relatively poor, at only 16 mW cm−2 peak power density using low concentrations of methanol in the vapor phase.

Nafion®/SiO2/m-BOT composite membranes for improved direct methanol fuel cell performance

RSC Advances ◽  
2014 ◽  
Vol 4 (88) ◽  
pp. 47129-47135 ◽  
Author(s):  
Yituo Wang ◽  
Guimei Han ◽  
Zhe Tian ◽  
Meng Wang ◽  
Jianling Li ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Specific Surface ◽  
Direct Methanol Fuel Cell ◽  
Composite Membranes ◽  
Cell Performance ◽  
Fuel Cell Performance ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Bentonite (BOT) has excellent hygroscopicity and large specific surface, so it is chosen as a dopant of Nafion® membranes in this paper.

Blended Nafion®/SPEEK direct methanol fuel cell membranes for reduced methanol permeability

2009 ◽  
Vol 189 (2) ◽  
pp. 958-965 ◽  
Author(s):  
Jie-Cheng Tsai ◽  
Hui-Pin Cheng ◽  
Jen-Feng Kuo ◽  
Yao-Hui Huang ◽  
Chuh-Yung Chen
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Cell Membranes ◽  
Methanol Permeability ◽  
Fuel Cell Membranes ◽  
Direct Methanol ◽  
Methanol Fuel Cell
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