New crosslinked sulfonated polytriazoles: Proton exchange properties and microbial fuel cell performance

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.

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Novel multi walled carbon nanotube based nitrogen impregnated Co and Fe cathode catalysts for improved microbial fuel cell performance

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2018.10.143 ◽

2018 ◽

Vol 43 (51) ◽

pp. 23027-23035 ◽

Cited By ~ 25

Author(s):

K.K. Türk ◽

I. Kruusenberg ◽

E. Kibena-Põldsepp ◽

G.D. Bhowmick ◽

M. Kook ◽

...

Keyword(s):

Carbon Nanotube ◽

Fuel Cell ◽

Microbial Fuel Cell ◽

Cell Performance ◽

Fuel Cell Performance ◽

Cathode Catalysts ◽

Multi Walled Carbon Nanotube

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Experimental Results of a PEM System Operated on Hydrogen and Reformate

Journal of Fuel Cell Science and Technology ◽

10.1115/1.2784324 ◽

2008 ◽

Vol 5 (1) ◽

Cited By ~ 4

Author(s):

M. Minutillo ◽

E. Jannelli ◽

F. Tunzio

Keyword(s):

Fuel Cell ◽

Natural Gas ◽

Large Scale ◽

Pem Fuel Cell ◽

Proton Exchange ◽

Operating Conditions ◽

Cell Performance ◽

Pure Hydrogen ◽

Test Bed ◽

Fuel Cell Performance

The main objective of this study is to evaluate the performance of a proton exchange membrane (PEM) fuel cell generator operating for residential applications. The fuel cell performance has been evaluated using the test bed of the University of Cassino. The experimental activity has been focused to evaluate the performance in different operating conditions: stack temperature, feeding mode, and fuel composition. In order to use PEM fuel cell technology on a large scale, for an electric power distributed generation, it could be necessary to feed fuel cells with conventional fuel, such as natural gas, to generate hydrogen in situ because currently the infrastructure for the distribution of hydrogen is almost nonexistent. Therefore, the fuel cell performance has been evaluated both using pure hydrogen and reformate gas produced by a natural gas reforming system.

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