Energy Management Simulation in a PEM Fuel Cell System
Mohammad
Alijanpour
Babol Noshirvani University of Technology
author
Majid
Shateri
K. N. Toosi University of technology
author
Mojtaba
Aghajani Delavar
Babol Noshirvani University of Technology
author
Mousa
Farhadi
Babol Noshirvani University of Technology
author
text
article
2015
eng
In this research the simulation of an air independent Proton Exchange Membrane Fuel Cell (PEMFC) propulsion system was taken into consideration. The system consists of several parts including PEM fuel cell stack, metal hydride and liquid oxygen (LOX) tanks, and also pre-heaters of oxygen and hydrogen gases along with other heat exchangers, to ensure proper operation of system. The heat recovery system was used in order to cool the PEM fuel cell stack and use its wasted heat effectively in other sections to increase the overall efficiency of the propulsion system. In this study, an appropriate design for heat recovery system with consideration of operation conditions and overall performance was done. In addition, the operation of the whole of energy management system by utilizing the wasted heat from the PEMFC has been simulated, and the effects of operating parameters such as different PEMFC power, its operating temperature and cooling water mass flow rate were investigated and discussed.
Hydrogen, Fuel Cell & Energy Storage
Iranian Research Organization for Science and Technology (IROST)
2980-8537
2
v.
1
no.
2015
1
6
https://hfe.irost.ir/article_167_e42695faf59012a06ec51dd70549a73c.pdf
dx.doi.org/10.22104/ijhfc.2015.167
Electrodeposition of platinum nanoparticles on reduced graphene oxide as an efficient catalyst for oxygen reduction reaction
Mehdi
Kheirmand
Department of Chemistry, School of basic sciences, Yasouj University, Yasouj, Iran
author
Abolfath
Eshghi
Hydrogen and Fuel Cell Research Laboratory, Department of chemistry, Yasouj University, Yasouj, Iran
author
text
article
2015
eng
Reduced graphene oxide film was synthesized on a glassy carbon electrode by electro reduction of graphene oxide powders in aqueous solution. Then platinum nano particles were deposited on reduced graphene oxide film that was deposited on the glassy carbon electrode via electro reduction of platinum salt. The Physical morphology of the platinum on reduced graphene oxide film was evaluated by scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). The results showed that, Platinum particles were deposited on reduced graphene oxide film. The performance of Pt on reduced graphene oxide for oxygen reduction reaction was considered with linear sweep voltammetry and electrochemical impedance spectroscopy of catalyst in an acidic solution via three electrode configuration cell. The results showed the proper performance of this green synthesized catalyst for oxygen reduction reaction. so this method for catalyst fabrication is a good candidate for the cathode of proton exchange membrane fuel cells.
Hydrogen, Fuel Cell & Energy Storage
Iranian Research Organization for Science and Technology (IROST)
2980-8537
2
v.
1
no.
2015
7
12
https://hfe.irost.ir/article_168_8d48c738f73ce961ebb8703e890ab3c1.pdf
dx.doi.org/10.22104/ijhfc.2015.168
Investigation of ion transport and water content properties in anion exchange membranes based on polysulfone for solid alkaline fuel cell application
Mona
Iravaninia
School of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran 16846-13114, Iran
author
Saba
Azizi
School of Chemical Engineering, Iran University of Science and Technology, Tehran, Iran
author
Soosan
Rowshanzamir
Green Research Center (GRC) & School of Chemical Engineering (SChE)
Iran University of Science & Technology
author
text
article
2015
eng
In present research work, homogeneous anion exchange membranes based on polysulfone (QAPSFs) were prepared via chloromethylation, amination and alkalization. In amination step, trimethylamine and N,N,N',N'-tetramethyl-1,6-hexanediamine were used as amination and crosslinking agents, respectively. The chloromethylated polysulfone was characterized by 1HNMR spectroscopy and chloromethylation degree was calculated using peak area integration. Ion transport properties such as ionic conductivity, ion exchange capacity, activation energy for hydroxide ion transport were measured for the prepared anion exchange membranes. Furthermore, water content associated properties such water uptake and hydrated number were determined for these membranes. According to the obtained results, the membrane with crosslinking agent (QAPSF-2) shows ion transport properties nearly similar to the membrane without crosslinker (QAPSF-1). Although, QAPSF-2 has more improved water content associated properties and reasonable dimensional stability in contrast to QAPSF-1. Finally, According to the ionic transport measurements and water content characterizations, the prepared QAPSF membranes can be denoted as good candidates for solid alkaline fuel cell application.
Hydrogen, Fuel Cell & Energy Storage
Iranian Research Organization for Science and Technology (IROST)
2980-8537
2
v.
1
no.
2015
13
25
https://hfe.irost.ir/article_169_b398beeb2574fd1ec86b981e878d18ce.pdf
dx.doi.org/10.22104/ijhfc.2015.169
One –step synthesis of PdCo alloy nanoparticles decorated on reduced grahene oxide as an Electro-catalyst for Oxygen Reduction Reaction in Passive Direct Methanol Fuel Cells
Karim
Kakaei
department of applied chemistry and nanochemistry
author
Hussein
Gharibi
Department of Chemistry, Faculty of Science, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
author
Soheyla
abbaspour
1Department of Physical Chemistry and Nano chemistry, Faculty of Science, University Of Maragheh, P.O. Box. 55181-83111, Maragheh, Iran
author
text
article
2015
eng
We report a Pd-Co (3:1)/graphene oxide (Pd3Co /GO) catalyst through a one-step strategy. GO is synthesized from graphite electrodes using ionic liquid-assisted electrochemical exfoliation. Controllable GO-supported Pd3Co electrocatalystis then was reduced by ethylene glycol as a stabilizing agent to prepare highly dispersed PdCo nanoparticles on carbon graphene oxide to be used as oxygen reduction reaction in passive direct methanol fuel cell (DEFC) catalysts. The performance of these electrodes in the ORR was measured with cyclic voltammetry (CV), linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), inductive coupled plasma (ICP), X-ray diffraction (XRD) and scanning electron microscopy coupled to energy dispersive X-ray (SEM–EDX). Since the Pd3Co/GO alloy electrocatalysts are inactive for the adsorption and oxidation of methanol, it can act as a methanol-tolerant ORR catalyst in a direct methanol fuel cell (DMFC). A membrane-electrode assembly (MEA) has been prepared by employing of the Pd3Co/GO as a cathode for passive direct methanol fuel cell and characterized by polarization curves and impedance diagrams. A better performance was obtained for the cell using Pd3Co/RGO (3.56 mW cm–2) compared to Pd/RGO (1.75 mW cm–2) and Pt/C-Electrochem (1.9 mW cm–2) as cathode in the DMFC.
Hydrogen, Fuel Cell & Energy Storage
Iranian Research Organization for Science and Technology (IROST)
2980-8537
2
v.
1
no.
2015
27
33
https://hfe.irost.ir/article_170_0f5f3b42183d70c04b311f3186014529.pdf
dx.doi.org/10.22104/ijhfc.2015.170
Modeling heat and mass transfer in laminar forced flow between parallel plates channel imposed to suction or injection
Hassan
Hassanzadeh
Faculty member of birjand university
author
Mozafar ali
MEHRABIAN
Faculty member of kerman university
author
text
article
2015
eng
A numerical model is developed to simulate the transport phenomena in the flow channel between parallel plates with porous and non-porous (or impermeable) walls. The continuity and momentum equations were solved first, assuming the wall Reynolds number in the range of with the suction or injection of air at a speed equal to the uniform inlet velocity. The results show that at constant inlet and wall Reynolds number, the friction factor on porous wall with suction is bigger than that with injection, but the axial non-dimensional pressure drop with injection is larger than the pressure drop in fully developed flow between impermeable plates and also larger than the pressure drop with suction. This is because of the net increase of the mean velocity of flow along the channel when injection is imposed. In the presence of suction, the pressure drop is controlled by suction rate, and approaches to a constant value as the inertia and viscous forces are counterbalanced in the flow. The energy equation is solved independently assuming constant suction rate of air in the porous wall using different thermal boundary conditions. The results show that the Nusselt number distribution along the channel depends on the thermal boundary conditions imposed on porous and non-porous walls. The thermal characteristics also depend on whether suction or injection occurs through the porous wa
Hydrogen, Fuel Cell & Energy Storage
Iranian Research Organization for Science and Technology (IROST)
2980-8537
2
v.
1
no.
2015
35
46
https://hfe.irost.ir/article_158_69ee3289cf4d49c8cbd8e8b626bf98b7.pdf
dx.doi.org/10.22104/ijhfc.2015.158
Electrocatalytic oxidation of glucose on the modified carbon paste electrode with sodalite nanozeolite for fuel cell
Seyed Karim
Hassaninejad-Darzi
Research Laboratory of Analytical & Organic Chemistry, Department of Chemistry, Faculty of Science, Babol University of Technology, Babol, Iran,
author
Fereshte
yousefi
Research Laboratory of Analytical & Organic Chemistry, Department of Chemistry, Faculty of Science, Babol University of Technology, Shariati Av., Babol, Iran. Postal Code: 47148-71167.
author
text
article
2015
eng
In this study, a sodalite nanozeolite was synthesized and characterized by X-ray diffraction (XRD) and scanning electronic microscopy (SEM). Following the morphology evolution of the sodalite nanozeolite in the SEM images illustrates the formation of the spherical particle with a size between 60 and 80 nm. Then, carbon paste electrode (CPE) was modified by sodalite nanozeolite and Ni2+ ions. The electrocatalytic performance of the fabricated electrode (Ni-SOD/CPE) towards glucose oxidation were evaluated by cyclic voltammetry and Chronoamperometry and it was used as anode for the electrocatalytic oxidation of glucose in 0.1 M of NaOH solution. Also, the electron transfer coefficient, the diffusion coefficient and the mean value of catalytic rate constant for glucose and redox sites of electrode were found to be 0.86, 3.13×10−5 cm2 s−1 and 5.34×106 cm3 mol−1 s−1, respectively. Good catalytic activity, high sensitivity, good choice and the stability and easy preparation enables the modified electrodes for the glucose electrooxidation. The obtained data confirmed that sodalite nanozeolite at the surface of CPE improves the catalytic efficiency of the dispersed nickel ions toward glucose oxidation. The Alkaline direct glucose fuel cells operated at ambient temperature with Ni-SOD/CPE anode created maximum power density of 4.1 mW cm-2 and cathode feed 4 mL min-1 of 0.1 M glucose and oxygen at 1 bar.
Hydrogen, Fuel Cell & Energy Storage
Iranian Research Organization for Science and Technology (IROST)
2980-8537
2
v.
1
no.
2015
47
58
https://hfe.irost.ir/article_177_c50f6e6450f4ce16b397a6f6d28d65b6.pdf
dx.doi.org/10.22104/ijhfc.2015.177