Journal ArticleDOI
A Solid-polymer Electrolyte Direct Methanol Fuel Cell with a Methanol-tolerant Cathode and its Mathematical Modelling
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In this article, a solid-polymer electrolyte direct methanol fuel cells (SPE-DMFCs) employing carbon-supported Pt-Fe as oxygenreduction catalyst to mitigate the effect of methanoline on cathode performance while operating with oxygen or air have been assembled.Abstract:
Solid-polymer electrolyte direct methanol fuel cells(SPE-DMFCs) employing carbon-supported Pt–Fe as oxygenreduction catalyst to mitigate the effect of methanol on cathode performance while operating with oxygen or air have been assembled. These SPE-DMFCs provided maximum power densities of 250 and $120mW cm^{-2}$ at $85^ oC$ on operating with oxygen and air, respectively. The polarization data for the SPE-DMFCs and their constituent electrodes have also been derived numerically employing a model based on henomenological transport equations for the catalyst layer, diffusion layer and the membrane electrolyte.read more
Citations
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Electrodeposited Pd-Co catalyst for direct methanol fuel cell electrodes : Preparation and characterization
TL;DR: In this article, two types of Pd-Co films were electrodeposited onto Au substrates by applying different current density (−10 or −200 ǫ cm −2 ); and then characterized them in terms of morphology, composition, crystal structure, and catalytic activity.
Journal ArticleDOI
Mixed potential in a direct methanol fuel cell
Fuqiang Liu,Chao Yang Wang +1 more
TL;DR: In this paper, a coupled model of two-phase species transport and multistep electrochemical kinetics, including simultaneous oxygen reduction, methanol oxidation, and gas phase chemical reaction, is presented.
Journal ArticleDOI
Carbon–Nb0.07Ti0.93O2 composite supported Pt–Pd electrocatalysts for PEM fuel cell oxygen reduction reaction
Anna Ignaszak,Chaojie Song,Weimin Zhu,Yan-Jie Wang,Jiujun Zhang,Alex Bauer,Ryan Baker,Vladimir Neburchilov,Siyu Ye,Stephen A. Campbell +9 more
TL;DR: In this paper, a composite support for Pt 0.55 Pd 0.93 O 2 (C 67-wt% ) composite support was prepared by hydrolysis of metal alkoxides in the presence of carbon, which showed a high surface area of 176m 2 /g and a similar porosity to that of carbon used to prepare this composite support.
Journal ArticleDOI
A membraneless alkaline direct liquid fuel cell (DLFC) platform developed with a catalyst-selective strategy
TL;DR: In this article, a scalable, membraneless alkaline direct liquid fuel cell (DLFC) platform is presented, where the inexpensive cathode catalysts, based on strongly coupled transition-metal-oxide nanocrystals and nano-structured carbon materials, exhibit high activity for the oxygen reduction reaction (ORR) but without activity for anode fuel oxidation reaction (FOR).
Journal ArticleDOI
Nanoporous PdCo catalyst for microfuel cells: Electrodeposition and dealloying
Satoshi Tominaka,Tetsuya Osaka +1 more
TL;DR: In this paper, the synthesis of nanostructured PdCo catalyst by electrochemical methods, which enable us to deposit the alloy onto microelectrodes of the on-chip fuel cells, is discussed in detail, and then dealloying for introducing nanopores into the electrodeposits is described.
References
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Journal ArticleDOI
Monodisperse FePt Nanoparticles and Ferromagnetic FePt Nanocrystal Superlattices
TL;DR: Thermal annealing converts the internal particle structure from a chemically disordered face- centered cubic phase to the chemically ordered face-centered tetragonal phase and transforms the nanoparticle superlattices into ferromagnetic nanocrystal assemblies that can support high-density magnetization reversal transitions.
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Polymer Electrolyte Fuel Cell Model
TL;DR: In this paper, an isothermal, one-dimensional, steady-state model for a complete polymer electrolyte fuel cell (PEFC) with a 117 Nation | membrane is presented, which predicts an increase in membrane resistance with increased current density and demonstrates the great advantage of a thinner membrane in alleviating this resistance problem.
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A Mathematical Model of the Solid‐Polymer‐Electrolyte Fuel Cell
Dawn Bernardi,Mark W. Verbrugge +1 more
TL;DR: In this article, a mathematical model of the solid polymer-electrolyte fuel cell is presented to investigate factors that limit cell performance and elucidate the mechanism of species transport in the complex network of gas, liquid, and solid phases of the cell.
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A review of the state-of-the-art of the methanol crossover in direct methanol fuel cells
Angelika Heinzel,V.M. Barragán +1 more
TL;DR: In this article, the influence of methanol crossover in DMFCs and the effort to get a more methenol-impermeably polymer electrolyte found in the literature is discussed.