Polymer Electrolyte Membrane Fuel Cell

Mohamed, Wan Ahmad Najmi Wan; Atan, Rahim

doi:10.15282/ijame.5.2012.11.0052

Cited by 12 publications

(6 citation statements)

References 11 publications

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“…Developing renewable resources such as soybean oil, canola oil, rapeseed oil, corn oil, palm oil, sunflower and linseed oil for the polymer industry has become highly desirable for both economic and environmental reasons (Rus, 2009). Successful PU elastomers synthesis using vegetable oil derived polyol revealed the improvement of thermal stability and oxidation resistance (Mohamed & Atan, 2012;Zhang, Jeon, Malsam, Herrington, & Christopher, 2007).…”

Section: Introductionmentioning

confidence: 99%

Acoustic Performance of Green Polymer Foam from Renewable Resources after UV Exposure

Hassan¹,

Rus

Ghazali

2014

Int J Automot Mech Eng

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Flexible and rigid green polymers foam were prepared by the reaction of polyol based on waste vegetable oil with commercial Polymethane Polyphenyl Isocyanate (Modified Polymeric-MDI) and Diisocyanate-diphenylmethane (Abou-El-Hossein, Kadirgama, Hamdi, & Benyounis). The effect of the Ultraviolet (Annie Paul et al.) on flexible and rigid green polymer foam was examined by Scanning Electron Microscope (SEM) and acoustic study of sound absorption coefficient (Baldoukas, Soukatzidis, & Demosthenous). The morphology structure of rigid green polymer foam gives a close cell structure and smallest cell size with UV exposure compared with flexible green polymer foam, which gives open cell structure and largest cell size after UV exposure.The α of flexible green polymer foam gives better compared with the α of rigid green foam at low frequency level before UV exposure. The noise reduction coefficient (NRC) of flexible green polymer foam is higher, 0.2339, compared with rigid green foam which is 0.1407. The NRC of flexible green polymer foam drops to 24.41 % with exposure up to 240 hours on UV light. The UV light was influenced by the sound absorption level with lower frequency, hence less ductile characteristic of the flexible and rigid green polymer foam.

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Section: Introductionmentioning

confidence: 99%

Acoustic Performance of Green Polymer Foam from Renewable Resources after UV Exposure

Hassan¹,

Rus

Ghazali

2014

Int J Automot Mech Eng

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“…As the capacity of fuel cells to produce energy increases, the amount of heat and water produced per unit volume also increases. Consequently, the thermal management of fuel cell stacks has become an important issue [1][2][3][4]. PEMFCs produce zero emissions and are scalable.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a flow channel for the production of polymer composite bipolar plates through hot compression molding

et al. 2017

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Materials used to fabricate polymer electrolyte membrane fuel cell (PEMFC) bipolar plates need to be light, strong, cheap, easily fabricated, mechanically stable, and have low surface contact resistance. Additionally, the performance of PEMFCs is greatly influenced by the materials used, flow channel design and shape to be fabricated on the bipolar plate surface. In this study, the fabrication of a flow channel through the hot compression molding method was developed. All materials used were in powder form, with graphite (G), carbon black (CB) and ferum (Fe) as fillers, and polypropylene (PP) acting as binder. The ratio of fillers (G/CB/Fe) to binder (PP) was fixed at 80:20. The fillers ratio was fixed in the range of (25 to 65 wt%) G, (10 to 30 wt%) CB and (5 to 25 wt%) Fe, and all fillers were mixed using a ball mill machine. The second stage of the mixing process involves the mixing of fillers and a binder, which was mixed using a internal mixer machine. Subsequently, the compaction process through hot compression molding was carried out. During the hot compression molding process, the flow channel of serpentine type, and U or V shapes were pressed onto the surface of the sample. The in-plane electrical conductivity and mechanical properties such as flexure strength, bulk density and shore hardness were then measured. Thus, a flow channel was investigated for accuracy of surface condition of flow channel dimensions (using a coordinate measurement machine), and subsequently compared with the actual drawings and its process ability. Based on electrical conductivity, flexure strength, bulk density and shore hardness, the sample with 15 wt% Fe was shown to yield the best results of 137.39 S/cm 3 , 34.04 MPa, 1.582 g/cm 3 , and 53.14 respectively. Meanwhile, based on the analysis of flow channel dimensions, the V shape is shown to give a smooth surface, with a dimensions difference between samples and the drawing of about -0.118 to 0.27%. Meanwhile, for the process ability, the V shape is much easier to release from the mold. In summary, this study revealed that the flow channel with V shape can be fabricated through the hot compression molding method with high accuracy.

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“…More than 90% of the transportation sector is powered by oil derived from nonrenewable fossil fuels [3]. Internal combustion engines rely on fossil fuels such as gasoline and diesel [4][5][6][7]. Fossil fuels are a nonrenewable form of energy, which implies that there is a finite amount in the world [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Gear Ratio on the Dc Motor Efficiency of a Mini-Fuel-Cell Vehicle Cruising at Constant Speeds

et al. 2015

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The traction motor is a key component in a fuel-cell vehicle as it converts electrical energy supplied by a fuel cell into mechanical shaft work for vehicle propulsion. Motor size, torque rating and current consumption are important factors in the selection of the optimum drive motor for best energy efficiency. In a practical power train assembly, the motor is coupled to the wheel via a gearing system. This study focuses on the performance with respect to traction motor efficiency relative to the gear ratio selection and variable drive cycles to minimize the power consumption of the vehicle. A test bench with a 1 kW fuel cell was developed and tests were performed at constant speeds between 15 km/h to 30 km/h with different gear ratios. Among the measured and evaluated parameters using Eagle Tree and Inertia data loggers are rpm, current, torque and power. The results show that the gear ratio selection produces a variation in required motor input power at similar drive speeds. It also shows the optimal setting of the gear ratio of more than 70% that suits the best efficiency point of the DC motor according to actual driving requirements.

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Polymer Electrolyte Membrane Fuel Cell

Cited by 12 publications

References 11 publications

Acoustic Performance of Green Polymer Foam from Renewable Resources after UV Exposure

Acoustic Performance of Green Polymer Foam from Renewable Resources after UV Exposure

Fabrication of a flow channel for the production of polymer composite bipolar plates through hot compression molding

Effect of Gear Ratio on the Dc Motor Efficiency of a Mini-Fuel-Cell Vehicle Cruising at Constant Speeds

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