Direct methanol fuel cell catalysts with controllable interface
Direct methanol fuel cell catalysts with controllable interface
... cells (AFCs), phosphoric acid fuel cells (PAFCs), proton-exchange membrane fuel cells (PEMFCs), molten carbonate fuel cells (MCFCs), and solid oxide fuel cells (SOFCs) Among these five fuel cell ... model electrocatalysts in this thesis effort 2.1 Direct methanol fuel cells (DMFC) A fuel cell is an electrochemical device in which the chemical energy stored in a fuel is...
Ngày tải lên: 14/09/2015, 18:42
Preparation and characterization of the PVDF-based composite membrane for direct methanol fuel cells
... PVDF-SPS composite membrane Table shows the water uptake of the pristine PVDF membrane, the PVDF-PS membrane and the PVDF-SPS composite membrane The blending of PS polymer reduces the water uptake of ... of the PVDF-SPS membrane: (a) C1s, (b) O1s, (c) S2p 3.4 Morphology of the PVDF-SPS composite membrane The morphologies of the pristine PVDF...
Ngày tải lên: 05/09/2013, 16:11
Carbon supports for low temperature fuel cell catalysts
... single fuel cell, have to be performed to confirm the good long-term performance of the CNTs as a support for fuel cell catalysts 3.3 Carbon nanohorns and nanocoils Carbon nanohorns and carbon ... Introduction Low- temperature fuel cells, with either hydrogen (phosphoric acid fuel cell, PAFC, and polymer electrolyte membrane fuel cell, PEMFC), methanol (direct metha...
Ngày tải lên: 23/04/2014, 22:32
Poly(2,6 dimethyl 1,4 phenylene oxide) based semi interpenetrating polymer network proton exchange membranes for direct methanol fuel cells
... Pair-Reinforced Semi- interpenetrating Polymer Network for Direct Methanol Fuel Cell Applications 1.2.2 Ion Pair-Reinforced Semi- interpenetrating Polymer Networks for Direct Methanol Fuel ... Pair-Reinforced Semi- interpenetrating Polymer Networks for Direct Methanol Fuel Cell Applications: Effects of Cross-linker Bulkiness 1.2.4 Proton Transfer th...
Ngày tải lên: 09/09/2015, 10:14
Experimental and theoretical study of low cost PEM fuel cell catalysts
... structure of a PEM fuel cell 39 2.2 Design and synthesis of fuel cell catalysts 40 2.2.1 Design of fuel cell catalyst at microscale level 40 2.2.2 Design of fuel cell catalyst ... EXPERIMENTAL AND THEORETICAL STUDY OF LOW COST PEM FUEL CELL CATALYSTS POH CHEE KOK (B.Sc.(Hons.)) University of Malaya (M.Sc.) National University of Singapor...
Ngày tải lên: 10/09/2015, 09:10
Polymer electrolyte membranes for direct methanol fuel cells
... design of most fuel cells is similar except for the electrolyte The five major types of fuel cells as defined by their electrolyte are: alkaline fuel cells (AFCs), phosphoric acid fuel cells (PAFCs), ... LETERATURE REVIEW 2.1 Fuel Cell 2.2 The Development of Polymer Electrolyte Membranes 15 2.3 Performance Indicators for Polymer Electrolyte Membranes 18 2...
Ngày tải lên: 14/09/2015, 13:50
Analysis of transport phenomena and electrochemical reactions in a micro PEM fuel cell with nature inspired flow field design
... convective and diffusive heat and mass transfer, electrode kinetics, transport and phase-change mechanism of water, and potential fields in a micro PEM fuel cell with nature inspired gas flow channels ... fuel cells J Power Sources, 2004, 125(2), 40–51 [16] Maher A. R Sadiq Al-Baghdadi A CFD analysis of transport phenomena and electrochemical...
Ngày tải lên: 09/09/2015, 10:17
A CFD study of hygro-thermal stresses distribution in tubular-shaped ambient air-breathing PEM micro fuel cell during regular cell operation
... operating system Figure Computational mesh of a tubular-shaped ambient air-breathing PEM micro fuel cell (quadratic) The values of the electrochemical transport parameters and the material properties ... fuel cell performance 2.1 Computational domain A schematic description of a tubular-shaped air-breathing PEM micro fuel cell is shown in Figure 1a...
Ngày tải lên: 05/09/2013, 14:58
Modeling optimizes PEM fuel cell durability using threedimensional multi-phase computational fluid dynamics model
... three-dimensional, multi-phase computational fluid dynamics model of a PEM fuel cell has been developed to investigate the hygro-thermal stresses in PEM fuel cell, which developed during the cell operation ... non-isothermal computational fluid dynamics model of a PEM fuel cell has been developed to simulate the hygro and thermal stresses in PEM fuel...
Ngày tải lên: 05/09/2013, 14:58
Novel design of a compacted micro-structured air-breathing PEM fuel cell as a power source for mobile phones
... performance and design of air-breathing PEM fuel cells Litster and Djilali [1] developed a single-phase one-dimensional semi-analytical model of the membrane electrode assembly (MEA) of planar air-breathing ... of a passive planar air breathing fuel cell cathode J Power Sources 2007, 167(1), 118–129 [3] Rajani B.P.M and Kolar A. K A model for a vertical plan...
Ngày tải lên: 05/09/2013, 14:58
Mechanical behaviour of PEM fuel cell catalyst layers during regular cell operation
... understanding of the mechanical behaviour of the catalyst layers during regular cell operation, mechanical response under steady-state hygro-thermal stresses should be studied under real cell operating ... fluid dynamics model of a PEM fuel cell has been developed to investigate the behaviour of the cathode and anode catalyst layers during the cell...
Ngày tải lên: 05/09/2013, 14:58
A CFD analysis on the effect of ambient conditions on the hygro-thermal stresses distribution in a planar ambient airbreathing PEM fuel cell
... Maher A. R Sadiq Al-Baghdadi A CFD study of hygro-thermal stresses distribution in tubularshaped ambient air-breathing PEM micro fuel cell during regular cell operation International Journal of Energy ... differential between the fuel cell stack and the operating environment make thermal management a challenging problem in PEM fuel cells As the am...
Ngày tải lên: 05/09/2013, 14:58
Novel design of a disk-shaped compacted micro-structured air-breathing PEM fuel cell
... performance and design of air-breathing PEM fuel cells Litster and Djilali [1] developed a single-phase one-dimensional semi-analytical model of the membrane electrode assembly (MEA) of planar air-breathing ... Mechanical behaviour of PEM fuel cell catalyst layers during regular cell operation International Journal of Energy and Environment, 2010; 1(6), 927-936 [...
Ngày tải lên: 05/09/2013, 14:58
Prediction of deformation and hygro-thermal stresses distribution in PEM fuel cell vehicle using threedimensional CFD model
... effect of hygro-thermal stresses into actual three-dimensional fuel cell model This model is used to investigate the hygro and thermal stresses in PEM fuel cell, which developed during the cell ... model of a PEM fuel cell has been developed to simulate the hygro and thermal stresses in PEM fuel cell, which are occurring during the cell operat...
Ngày tải lên: 05/09/2013, 14:58
A CFD analysis of transport phenomena and electrochemical reactions in a tubular-shaped PEM fuel cell
... used to analyse and evaluate the performance of a planar and a tubular-shaped PEM fuel cell 2.1 Computational domain The full computational domains for the planar and tubular-shaped PEM fuel cell ... conditions are specified at all external boundaries of the computational domain as well as boundaries for various mass and scalar equations inside the computationa...
Ngày tải lên: 05/09/2013, 14:58