J. Fuel Cell Sci. Technol.: All Topics http://scitation.aip.org/ J. Fuel Cell Sci. Technol.: All Topics Errata: Mathematical Model of a Direct Methanol Fuel Cell [J. Fuel Cell Sci. Tech. 1 (1), pp. 4348 (2004)] http://link.aip.org/link/doi/10.1115/1.4003995 B. L. Garcia, V. A. Sethuraman, J. W. Weidner, R. E. White, and R. Dougal<br/> Abstract not available. [J. Fuel Cell Sci. Technol. 9, 017001 (2011)] published Thu Dec 15, 2011. Vapor Delivery Systems for the Study of the Effects of Reformate Gas Impurities in HT-PEM Fuel Cells http://link.aip.org/link/doi/10.1115/1.4005123 Samuel S. Araya, Soren K. Kaer, and Soren J. Andreasen<br/> The reforming of methanol can be an alternative source of hydrogen for fuel cells because it has many practical advantages over hydrogen, mainly due to the technological limitations related to the storage, supply, and distribution of the latter. However, despite the ease of methanol handling, impuri ... [J. Fuel Cell Sci. Technol. 9, 015001 (2011)] published Mon Dec 19, 2011. Maximizing the Use of Platinum Catalyst by Ultrasonic Spray Application http://link.aip.org/link/doi/10.1115/1.4004462 Robb Engle<br/> The following discusses the method and advantages of ultrasonic deposition of carbon-based platinum ink solution onto catalytic membranes in the manufacture of platinum-based fuel cells, doubling industry standard performances. Using patented ultrasonic atomization technology (Ultrasonic atomization ... [J. Fuel Cell Sci. Technol. 9, 014501 (2011)] published Tue Dec 27, 2011. HeteroFoaMs: Electrode Modeling in Nanostructured Heterogeneous Materials for Energy Systems http://link.aip.org/link/doi/10.1115/1.4005142 W. K. S. Chiu, A. V. Virkar, F. Zhao, K. L. Reifsnider, G. J. Nelson, F. Rabbi, and Q. Liu<br/> Heterogeneous functional materials, e.g., HeteroFoaMs are at the heart of countless energy systems, including heat storage materials, batteries, solid oxide fuel cells, and polymer electrolyte fuel cells. HeteroFoaMs are generally nanostructured and porous to accommodate transport of gasses or fluid ... [J. Fuel Cell Sci. Technol. 9, 011019 (2011)] published Tue Dec 27, 2011. CO Separation From Combined Cycles Using Molten Carbonate Fuel Cells http://link.aip.org/link/doi/10.1115/1.4005125 G. Manzolini, S. Campanari, P. Chiesa, A. Giannotti, P. Bedont, and F. Parodi<br/> This paper presents an analysis of advanced cycles with limited CO emissions based onthe integration of molten carbonate fuel cells (MCFCs) in natural gas fired combined cycles (NGCC) in order to efficiently capture CO from the exhaust of the gas turbine. In the proposed cycles, the gas turbine flue ... [J. Fuel Cell Sci. Technol. 9, 011018 (2011)] published Tue Dec 27, 2011. Degradation Issues in Solid Oxide Cells During High Temperature Electrolysis http://link.aip.org/link/doi/10.1115/1.4003787 M. S. Sohal, J. E. O'Brien, C. M. Stoots, V. I. Sharma, B. Yildiz, and A. Virkar<br/> Idaho National Laboratory (INL) is performing high-temperature electrolysis research to generate hydrogen using solid oxide electrolysis cells (SOECs). The project goals are to address the technical and degradation issues associated with the SOECs. This paper provides a summary of various ongoing IN ... [J. Fuel Cell Sci. Technol. 9, 011017 (2011)] published Tue Dec 27, 2011. A Two-Dimensional Modeling Study of a Planar SOFC Using Actual Cell Testing Geometry and Operating Conditions http://link.aip.org/link/doi/10.1115/1.4005124 Gianfranco DiGiuseppe, Yeshwanth J. Gowda, and Naveen K. Honnagondanahalli<br/> This paper reports a new electrochemical performance study performed on a planar SOFC cell. This study consists of a 2D model developed using a commercial software, namely Comsol Multiphysics. The model includes fluid dynamics, electrochemistry, electrical conduction, and diffusion physics. This mod ... [J. Fuel Cell Sci. Technol. 9, 011016 (2011)] published Tue Dec 27, 2011. Fabrication Characteristics of SOFC Single Cell Using Nanocrystalline 1Ce10ScSZ Electrolyte Powder prepared by Co-Precipitation Process http://link.aip.org/link/doi/10.1115/1.4003783 Ju Hee Kang, Young Mi Kim, Ho-Sung Kim, Moo Sung Lee, Jae Hyuk Jang, and Jin-Hun Jo<br/> Nanocrystalline ceria-doped scandia-stabilized zirconia (1Ce10ScSZ) powders were prepared via the co-precipitation process for solid oxide fuel cell. The effects of the calcination temperature on different properties of the as-synthesized powders, such as phase evolution, crystalline size, and speci ... [J. Fuel Cell Sci. Technol. 9, 011015 (2011)] published Tue Dec 27, 2011. Advanced Study of Non-Uniform Cell Voltage Distribution for a PEMFC Stack http://link.aip.org/link/doi/10.1115/1.4005121 Shuang Zhai, Su Zhou, Fengxiang Chen, Pengtao Sun, and Kai Sundmacher<br/> In this paper, a fully coupled non-isothermal, electrochemical, and transport 3D model for a 10-cell PEMFC stack with coolant channels is constructed and implemented to examine and compare the influence factors to the stack performance. The first case to be considered is under different thermal oper ... [J. Fuel Cell Sci. Technol. 9, 011014 (2011)] published Thu Dec 22, 2011. Dynamic Modeling of a Compact Heat Exchange Reformer for High Temperature Fuel Cell Systems http://link.aip.org/link/doi/10.1115/1.4004709 Jeongpill Ki, Daejong Kim, and Srikanth Honavara-Prasad<br/> Solid oxide fuel cells (SOFC) are the most advanced energy system with the highest thermal efficiency. Current trend of research is on less than 10 kW scale, which requires compact fuel processing systems. Even if internal reforming in the stack is also a possible option, it causes significant tempe ... [J. Fuel Cell Sci. Technol. 9, 011013 (2011)] published Thu Dec 22, 2011. Quantifying Individual Losses in a Direct Methanol Fuel Cell http://link.aip.org/link/doi/10.1115/1.4005394 Brenda L. Garcia-Diaz, Jennifer R. Patterson, and John W. Weidner<br/> Studying the performance of a direct methanol fuel cell (DMFC) is complicated by the complex interactions of kinetic and transport processes. As a result, changes in one aspect of the cell have consequences in other aspects, which are difficult to elucidate from full-cell polarization (i.e., voltage ... [J. Fuel Cell Sci. Technol. 9, 011012 (2011)] published Thu Dec 22, 2011. PEMFC Flow Channel Geometry Optimization: A Review http://link.aip.org/link/doi/10.1115/1.4005393 Ararimeh Aiyejina and M. K. S. Sastry<br/> The proton exchange membrane fuel cell (PEMFC) is a particularly promising energy conversion device for use in stationary or vehicular applications. PEMFCs provide high efficiency and power density, with zero emissions, low operating temperatures, quick start-up, and long lifetime. While the usage o ... [J. Fuel Cell Sci. Technol. 9, 011011 (2011)] published Thu Dec 22, 2011. Modeling, Control, and Integration of a Portable Solid Oxide Fuel Cell System http://link.aip.org/link/doi/10.1115/1.4005386 Puran Adhikari and Mohamed Abdelrahman<br/> A novel method for the control and integration of a portable hybrid solid oxide fuel cell (SOFC) system, based on hydrocarbon fuel, is presented in this paper. The balance of plant (BOP) and power electronics systems are treated as separate local units, and local controllers are designed for each un ... [J. Fuel Cell Sci. Technol. 9, 011010 (2011)] published Thu Dec 22, 2011. A Two-Dimensional Model for CO/Fuel Multiphase Flow on the Anode Side of a DMFC http://link.aip.org/link/doi/10.1115/1.4005384 Wukui Zheng, Arho Suominen, Henrik Lagercrantz, and Aulis Tuominen<br/> Increasing the efficiency of passive fuel cells is a significant hurdle in commercializing small fuel cells. By understanding the interactions within a single cell, possibilities for further performance increases in fuel cell structures overall are uncovered. To investigate the multiphase flows and ... [J. Fuel Cell Sci. Technol. 9, 011009 (2011)] published Thu Dec 22, 2011. Densification of Plasma Sprayed SOFC Electrolyte Layer Through Infiltration With Aqueous Nitrate Solution http://link.aip.org/link/doi/10.1115/1.4004503 A. Mirahmadi and K. Valefi<br/> Electrolyte of the solid oxide fuel cells deposited by atmospheric plasma spraying of 8 mol.% yttria (8YSZ), is not applicable in as sprayed condition. Optimization of the plasma spraying process parameters or application of feedstock powder, consisting of 8YSZ and 5wt.% alumina improves the problem ... [J. Fuel Cell Sci. Technol. 9, 011008 (2011)] published Mon Dec 19, 2011. Transient Model Validation of a Desulfurizer and a Syngas Generator for High Temperature Fuel Cells http://link.aip.org/link/doi/10.1115/1.4005122 Andrea Ferretti, Alberto Traverso, Gary J. Saunders, Mark A. Perna, and Aristide F. Massardo<br/> This paper presents the steady state and transient model of a natural gas fuel processing system of a solid oxide fuel cell (SOFC) hybrid system, and its validation using data obtained through the use of a real plant. The model was developed by the Thermochemical Power Group of the University of Gen ... [J. Fuel Cell Sci. Technol. 9, 011007 (2011)] published Mon Dec 19, 2011. Investigation of the Effects of Catalyst Loading and Gas Flow Rate on Polymer Electrolyte Membrane (PEM) Fuel Cell Performance and Degradation http://link.aip.org/link/doi/10.1115/1.4005120 Anthony C. Okafor and Hector-Martins C. Mogbo<br/> In this paper, the effects of gas flow rates and catalyst loading on polymer electrolyte membrane fuel cell (PEMFC) performance was investigated using a 50 cmactive area fuel cell fixture with serpentine flow field channels machined into poco graphite blocks. Membrane electrode assemblies (MEAs) wit ... [J. Fuel Cell Sci. Technol. 9, 011006 (2011)] published Mon Dec 19, 2011. The Effects of Membrane Properties and Structural Parameters on the Non-Minimum Phase Behavior of the PEM Fuel Cell Humidification System http://link.aip.org/link/doi/10.1115/1.4003752 John F. Hall, Christine A. Mecklenborg, Clay S. Hearn, and Dongmei Chen<br/> The water vapor transfer across a Nafion membrane exhibits an undesired non-minimum phase behavior. This paper will show that even in the disturbance-to-output loop, the non-minimum phase zero adversely affects the feedback controller design because of the coupling effect between the disturbance-to- ... [J. Fuel Cell Sci. Technol. 9, 011005 (2011)] published Mon Dec 19, 2011. Design of a Membraneless Passive Planar Four-Cell Direct Borohydride Fuel Cell http://link.aip.org/link/doi/10.1115/1.4005383 Jinfu Ma and Yongning Liu<br/> The use of noble catalysts and ion exchange membranes make the design of a direct borohydride fuel cell (DBFC) stack complicate and limit its application. Therefore, the development of simple, cost effective construction for DBFC stacks is necessary. In this paper, a passive DBFC stack that consists ... [J. Fuel Cell Sci. Technol. 9, 011004 (2011)] published Mon Dec 19, 2011. The Influence of Chitosan Membrane Properties for Direct Methanol Fuel Cell Applications http://link.aip.org/link/doi/10.1115/1.4005382 Peter O. Osifo and Aluwani Masala<br/> The chitosan membranes with different degrees of deacetylation (dda), prepared from Cape rock lobster collected from the surroundings of Cape Town, South Africa were characterized for suitability in methanol fuel cell applications. A comparison of chitosan membranes characteristics and that of conve ... [J. Fuel Cell Sci. Technol. 9, 011003 (2011)] published Mon Dec 19, 2011. Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems http://link.aip.org/link/doi/10.1115/1.4004461 Mohamed Mamlouk, Jong Hyun Jang, and Keith Scott<br/> The oxygen reduction activities of platinum and platinum alloy catalysts were evaluated at temperatures up to 150 degrees C in phosphoric acid solution. The oxygen reduction currents and open circuit potentials were measured using chronoamperometry with double potential steps to eliminate the effe ... [J. Fuel Cell Sci. Technol. 9, 011002 (2011)] published Thu Dec 15, 2011. Influence of High Current Cycling on the Performance of SOFC Single Cells http://link.aip.org/link/doi/10.1115/1.4004639 Markus J. Heneka and Ellen Ivers-Tiffee<br/> In this contribution, the performance of solid oxide fuel cells (SOFC) under high current density load cycles is studied by means of electrical measurements and material analyses. Our study is an important premise for the application of accelerated life testing (ALT) to SOFC single cells. In reliabi ... [J. Fuel Cell Sci. Technol. 9, 011001 (2011)] published Thu Dec 15, 2011.