Fuel Cells

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Long Term Testing in Continuous Mode of HT‐PEMFC Based H3PO4/PBI Celtec‐P MEAs for μ‐CHP Applications
Fuel Cells - Tập 9 Số 4 - Trang 325-348 - 2009
P. Moçotéguy, Bastian Ludwig, Joachim Scholta, Regina Barrera, S. Ginocchio
AbstractSingle cell and 500 We stack integrating Celtec P1000 MEAs were operated in continuous mode at 0.4 A cm–2 and 160 °C, under simulated reformate and air. Single cell's ohmic resistivity was almost unaffected by 1,100 h of ageing but the cell progressively switched from a cathodic to an anodic mass transfer limited operation. The stack wa...... hiện toàn bộ
PBI‐Based Polymer Membranes for High Temperature Fuel Cells – Preparation, Characterization and Fuel Cell Demonstration
Fuel Cells - Tập 4 Số 3 - Trang 147-159 - 2004
Qingfeng Li, Ronghuan He, Jens Oluf Jensen, Niels Bjerrum
AbstractProton exchange membrane fuel cell (PEMFC) technology based on perfluorosulfonic acid (PFSA) polymer membranes is briefly reviewed. The newest development in alternative polymer electrolytes for operation above 100 °C is summarized and discussed. As one of the successful approaches to high operational temperatures, the development and evaluation of acid dop...... hiện toàn bộ
The Chemical and Structural Nature of Proton Exchange Membrane Fuel Cell Properties
Fuel Cells - Tập 5 Số 2 - Trang 213-229 - 2005
Michael A. Hickner, Bryan S. Pivovar
AbstractThe chemical and structural (morphological) features of proton exchange membranes are directly tied to their fuel cell relevant transport properties. A large body of research has focused on characterizing the structure or investigating the properties of Nafion® and other proton exchange membranes, but few studies have linked chemical composition to membrane...... hiện toàn bộ
Optimisation of the Microporous Layer for a Polybenzimidazole‐Based High Temperature PEMFC – Effect of Carbon Content
Fuel Cells - Tập 10 Số 5 - Trang 770-777 - 2010
Justo Lobato, Pablo Cañizares, Manuel A. Rodrigo, Diego Úbeda, F. Javier Pinar, José J. Linares
AbstractThis work aims at studying the role of the microporous layer (MPL) in electrodes prepared for high temperature PBI‐based PEMFC. The two main components of this layer are carbon black and a polymeric binder (Teflon). This work addresses the effect of the MPL carbon amount on the performance of a high temperature PEMFC. Thus, gas diffusion layers (GDLs) conta...... hiện toàn bộ
Residual Stress and Buckling Patterns of Free‐standing Yttria‐stabilized‐zirconia Membranes Fabricated by Pulsed Laser Deposition
Fuel Cells - Tập 12 Số 4 - Trang 614-623 - 2012
Anna Evans, Michel Prestat, René Tölke, Meike V. F. Heinz, Ludwig J. Gauckler, Yasser Safa, Thomas Hocker, J. Courbat, D. Briand, Ν. F. de Rooij, Diana Courty
AbstractThe residual stress and buckling patterns of free‐standing 8 mol.% yttria‐stabilized‐zirconia (8YSZ) membranes prepared by pulsed laser deposition and microfabrication techniques on silicon substrates are investigated by wafer curvature, light microscopy, white light interferometry, and nanoindentation. The 300 nm thin 8YSZ membranes (390 μm × 390 μm) depos...... hiện toàn bộ
Fluid Dynamic Modeling for Microbial Fuel Cell Based Biosensor Optimization
Fuel Cells - Tập 17 Số 5 - Trang 627-634 - 2017
Giulia Massaglia, Matteo Gerosa, Valeria Agostino, A. Cingolani, Adriano Sacco, Guido Saracco, Valentina Margaria, Marzia Quaglio
AbstractThe present work investigates the fluid dynamic distribution in two different geometries of Microbial Fuel Cells (MFCs), a squared shape MFC and a drop‐like one, and explores their use as possible biosensors. For both architectures, air‐cathode single chamber microbial fuel cells (SCMFCs) with an inner volume of 12.5 mL have been developed. Simulations base...... hiện toàn bộ
Planar High Temperature Heat Pipes for SOFC/SOEC Stack Applications
Fuel Cells - Tập 14 Số 3 - Trang 479-488 - 2014
M. Dillig, Jonas M. Leimert, Jürgen Karl
AbstractTargeting transient operation of high temperature solid oxide cell (SOC) systems this paper proposes an enhanced heat management mechanism using planar high temperature heat pipes that can be integrated into the SOC‐stack structure. Flat heat pipes with thicknesses down to 4 mm filled with liquid alkali metals for almost isothermal 2D heat spreading, even f...... hiện toàn bộ
A Sb‐doped SnP2O7 Solid Proton Conductor for Intermediate Temperature Fuel Cells
Fuel Cells - Tập 8 Số 6 - Trang 453-458 - 2008
Xu Wu, A. Verma, Keith Scott
AbstractSb‐doped SnP2O7 were prepared and characterised with XRD, FTIR, SEM and EIS. The preparation parameters were optimised taking into consideration the influence of H3PO4 content in the reactants and PmOn impurities. Conductivities of S...... hiện toàn bộ
Performance Improvement by Temperature Control of an Open‐Cathode PEM Fuel Cell System
Fuel Cells - Tập 14 Số 3 - Trang 466-478 - 2014
Stephan Strahl, Attila Husar, Paul F. Puleston, Maria Serra
AbstractThe work presented in this article combines experimental analysis and theoretical studies of temperature effects on the performance of an open‐cathode, self‐humidified PEM fuel cell system for the design of optimal control strategies. The experimental analysis shows the great potential of improving the system performance by proper thermal management. The mo...... hiện toàn bộ
Anion‐Exchange Membranes for Fuel Cells: Synthesis Strategies, Properties and Perspectives
Fuel Cells - Tập 15 Số 6 - Trang 761-780 - 2015
Hongwei Zhang, Dongyang Chen, Yin Xianze, Shibin Yin
AbstractThis review focuses on various synthesis strategies of anion‐exchange membranes (AEMs) for fuel cells, diverse methodologies of AEM‐forming, together with relationship between structures and properties. AEMs are discussed from seven categories, including (1) AEMs derived from Nafion precursors with sulfonyl fluoride groups, which display excellent stability...... hiện toàn bộ
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