Publications (available via or as pdf-Files )

If you have problems downloading a publication please send an e-mail to the secretary Isabella Kalt or to the respective author

• 2009

Measuring the Current Distribution with Submillimeter Resolution in PEFCs, III. Influence of the Flow Field Geometry
M. Reum, A. Wokaun, and F. N. Büchi
J. Electrochem. Soc., 156, B1225 (2009)

Determination of Material Properties of Gas Diffusion Layers: Experiments and Simulations Using Phase Contrast Tomographic Microscopy
J. Becker, R. Flückiger, M. Reum, F. N. Büchi, F. Marone, and M. Stampanoni
J. Electrochem. Soc., 156, B1175 (2009)

Measuring the Current Distribution with Sub-Millimeter Resolution in PEFCs, II. Impact of Operating Parameters
M. Reum, S. A. Freunberger, A. Wokaun, and F. N. Büchi
J. Electrochem. Soc. 156, B301 (2009)

Design approaches for determining local current and membrane resistance in polymer electrolyte fuel cells (PEFCs)
S.A. Freunberger, M. Reum, F.N. Büchi
Handbook of Fuel Cells – Fundamentals, Technology and Applications. Edited by Wolf Vielstich. Harumi Yokokawa, Hubert A. Gasteiger.
Volume 6,Chapter 41, 2009: Advances in Electrocatalysis, Materials, Diagnostics and Durability.
ISBN: 978-0-470-72311-1.

Mathematical modeling of fuel cells
F.N. Büchi
Fuel Cells: Problems and Solutions by Vladimir S. Bagotsky, Chapter 15, 255-261, 2009.
Edited by ECS John Wiley & Sons, Ltd.

Heterogeneous cell ageing in polymer electrolyte fuel cell stacks
F.N. Büchi
Polymer electrolyte fuel cell durability by F.N. Büchi et al. (eds.), 431-439
Springer Science+Business Media, LLC 2009.
ISBN: 978-0-387-85534-9, e-ISBN: 978-0-387-85536-3

Polymer Electrolyte Fuel Cell Durability
Felix N. Büchi, Minoru Inaba, Thomas J. Schmidt, Eds.
Springer Science + Business Media, LLC 2009

• 2008

Cell Interaction Phenomena in Polymer Electrolyte Fuel Cell Stacks
S.A. Freunberger, I.A. Schneider, P.-C. Sui,A. Wokaun, N. Djilali, F.N. Büchi,
J. Electrochem. Soc. 155, B704 (2008)

Measurement of the local membrane resistance in polymer electrolyte fuel cells (PEFC) on the sub-mm scale
F.N Büchi and M. Reum
Meas. Sci. Technol. 19, 085702 (2008)

Fuel Cells using Hydrogen
K.A. Friedrich and F.N. Büchi
Chapter in „Hydrogen as a Future Energy Carrier“, Eds. A. Züttel, A. Borgschulte, L. Schlappach, Wiley-VCH, Weinheim, Germany, (2008)

Electrochemical Diffusimetry Of Fuel Cell Gas Diffusion Layers
D. Kramer, S.A. Freunberger, R. Flückiger, I.A. Schneider, A. Wokaun, F.N. Büchi, G.G. Scherer,
J. Electroanal. Chem., 612, 63-77 (2008)

• 2007

Thermal analysis and optimization of a portable, edge-air-cooled PEFC stack
R. Flückiger, A. Tiefenauer, M. Ruge, C. Aebi, A. Wokaun, F.N. Büchi
J. Power Sources, 172, 324-333 (2007)

Consumption and Efficiency of a Passenger Car with a Hydrogen/Oxygen PEFC based Hybrid Electric Drivetrain
F.N. Büchi, G. Paganelli, P. Dietrich, D. Laurent, A. Tsukada, et al.,
Fuel Cells 07, 2007, No. 4, 329-335

On the Efficiency of an Advanced Automotive Fuel Cell System
F.N. Büchi, S.A. Freunberger, M. Reum, G. Paganelli, A. Tsukada, et al.,
Fuel Cells 07, 2007, No. 2, 159-164

• 2006

Expanding current distribution measurement in PEFCs to sub-millimeter resolution
S. A. Freunberger, M. Reum, A. Wokaun, F.N. Büchi
Electrochem. Commun. 8, 1435–1438 (2006)

Experimental investigation of coupling phenomena in polymer electrolyte fuel cell stacks
M. Santis, S.A. Freunberger, M. Papra, A. Wokaun and F.N. Büchi
J. Power Sources, 161, 1076-1083 (2006)

In-Plane Effects in Large-Scale PEFCs, II. The Influence of Cooling Strategy on Cell Performance
S.A. Freunberger, A. Wokaun, and F.N. Büchi
J. Electrochem.Soc., 153, A909-A913 (2006)

In-Plane Effects in Large-Scale PEMFCs, I. Model Formulation and Validation
S.A. Freunberger, M. Santis, I.A. Schneider, A. Wokaun, and F.N. Büchi
J. Electrochem.Soc., 153, A396-A405 (2006)

What is Learned Beyond the Scale of Single Cells?
F.N. Büchi, S.A. Freunberger, M. Santis
ECS Transactions 1, 963-968 (2006)

Electrical Drivetrain Concept with Fuel Cell System and Supercapacitor - Results of the "HY-LIGHT®"-vehicle
F.N. Büchi, A. Delfino, P. Dietrich, S.A. Freunberger, R. Kötz, et al.
5. VDI Tagung Innovative Fahrzeugantriebe, Nov. 9./10. 2006, Dresden, VDI-Band 1975, 415-429 (2006), ISBN 3-18-091975-2

• 2005

Dependence of current distribution on water management in PEFC of technical size
F. N. Büchi, A. B. Geiger, R. P. Neto,
J. Power Sources, 145, 62-67, (2005)

On the Efficiency of Automotive H2/O2 PE Fuel Cell Systems
F. N. Büchi, M. Reum, S. A. Freunberger, A. Delfino
Proceedings of the 3rd European PEFC Forum, Session B09, Paper. B091, on CD

Electrical and Thermal Cell-to-Cell Coupling in PEFC Stacks – A CFD Analysis
Stefan A. Freunberger, Felix Büchi, N. Djilali
Proceedings of the 3rd European PEFC Forum, Session B06, Paper B065, on CD

Homogenization of the Current Density Distribution in Polymer Electrolyte Fuel Cells
M. Santis and F. N. Büchi
Proceedings of the 3rd European PEFC Forum, Paper P210, on CD

First Investigations of Local Current Density Distribution over the Flow Field Channel and Rib
M. Reum, S. A. Freunberger, F. Fürholz, F. N. Büchi
Proceedings of the 3rd European PEFC Forum, Paper P207, on CD

• 2004

Modular Stack-Internal Air Humidification Concept-Verification in a 1kW Stack
Marco Santis, Daniel Schmid, Martin Ruge, Stefan Freunberger,
Felix N. Büchi,
Fuel Cells 4, 214-218 (2004)

PEFC: Stacks, Systems and Applications
F.N. Büchi, J.F. Affolter, S. Camenzind, N. Chmielewski, P. Dietrich, M. Höckel, M. Ruge, M. Santis
Chimia, 58, 869-878 (2004)

Fuel Cell Modeling and Simulations
J. Mantzaras, S. A. Freunberger, F. N. Büchi, M. Roos, W. Brandstätter, M. Prestat, L. J. Gauckler, B. Andreaus, F. Hajbolouri, S. M. Senn, D. Poulikakos, A. K. Chaniotis, D. Larrain, N. Autissier, and F. Maréchal
Chimia, 58, 857-868 (2004)

Operational aspects of a large PEFC stack under practical conditions
P. Rodatz, F.N. Büchi, C. Onder and L. Guzzella
J. Power Sources, 128, 208-217 (2004)

• 2003

Small Size PEFC Systems for Special Applications
F.N. Büchi
Handbook of Fuel Cell Technology, Eds. W. Vielstich, A. Lamm and H. Gasteiger, John Wiley and Sons, Sussex, UK, 2003, Vol 4, 1152-1161, (2003)

HY-Power a Technology Platform Combining a Fuel Cell System and a Super Capacitor
P. Dietrich, F.N. Büchi, A. Tsukada, M. Bärtschi, R. Kötz, G.G. Scherer, P. Rodatz, O. Garcia¹⁾, M. Ruge, M. Wollenberg, P. Lück, A. Wiartralla, C. Schönfelder, A. Schneuwly⁴⁾, P. Barrade
Handbook of Fuel Cell Technology, Eds. W. Vielstich, A. Lamm and H. Gasteiger, John Wiley and Sons, Sussex, UK, 2003, Vol 4, 1184-1198 (2003)

Performance and Operational Characteristics of a Hybrid Vehicle Powered by Fuel Cells and Supercapacitors
P. Rodatz, O. Garcia, L. Guzzella, F.N. Büchi, M. Bärtschi, A. Tsukada, P. Dietrich, R. Kötz, G.G. Scherer, A. Wokaun
Proceedings of the Session “Fuel Cell Power for Transportation”, SAE 2003 World Congress, Detroit MI, USA, Mar. 3-6, 2003, Vol. 1741, 77-88 (2003)

PowerPac – A Portable Fuel Cell System with Technological Innovations
M. Ruge, M. Santis, G. Paganelli, D. Schmid, J. Hoffmann, F.N. Büchi
Proceedings of the Fuel Cell World Conference 2003, The Fuel Cell World, Lucerne, Switzerland, June 30 – July 4,2003, p.119 – 128 (2003)

1 + 1 Dimensional Model for PE Fuel Cells of Technical Size
S. Freunberger, A. Tsukada, M. Santis, G. Fafilek, F.N. Büchi
Proceedings of the 2nd European PEFC Forum, Lucerne, Switzerland, June 30 – July 4, 2003, p.299-308 (2003)

Modular Stack-Internal Humidification Concept – Verification in an 1 kW Portable System
M. Santis, D. Schmid, M. Ruge, S. Freunberger, F.N. Büchi
Proceedings of the 2nd European PEFC ForumLucerne, Switzerland, June 30 – July 4, 2003, p.793-800 (2003)

• 2002

Fuel cell-supercap hybrid electric powertrain
F.N. Büchi, A. Tsukada, P. Rodatz, O. Garcia, M. Ruge, R. Kötz, M. Bärtschi, P. Dietrich
Proceedings of the Fuel Cell World Conference, Lucerne, Switzerland, July, 1-5, 218-231 (2002)

Development of 200cm² active area PEFC-stacks for application in a vehicle powertrain
F.N. Büchi, M. Ruge
Proceedings of the “Energy and Electrochemical Process for a Cleaner Environment” Symposium, of the 200th Meeting of the Electrochemical Soc., PV 2001-23, 165-173 (2002)

• 2001

Investigation of the Transversal Water Profile in Nafion Membranes in PE Fuel Cells
F.N. Büchi, G.G. Scherer
J. Electrochem. Soc., 148, A183 (2001)

Wasserstoff für’s Handy
F.N. Büchi
Spektrum der Wissenschaft, July, 48-51 (2001)

Bipolar Elements for PE Fuel Cell Stacks Based on the Mould to Size Process of Carbon/Polymer Mixtures
M. Ruge and F. N. Büchi
Proceedings of the 1st European PEFC Forum, Lucerne, Switzerland, July 2-6, 2001, p.399-308 (2001)

• 2000

Operating PEM Fuel Cells Without External Humidification of the Reactant Gases - Fundamental Aspects
F. N. Büchi and S. Srinivasan
J. Eletrochem. Soc., 144, 2767-2772 (1997)

Elektroboot mit Brennstoffzellenantrieb
F.N. Büchi
GWA (Gas, Wasser, Abwasser), Organ des Schweizerischen Vereins des Gas und Wasserfaches, 4, 292 – 295 (2000)

• before 2000

Microelectrode Investigation of the Oxygen Permeation in Different Proton Exchange Membranes
F. N. Büchi, M. Wakizoe and S. Srinivasan
J. Eletrochem. Soc., , 143, 927-932 (1996)

In situ Membrane Resistance Measurements in PEFC by Fast Current Pulses
F.N. Büchi, A. Marek and G.G. Scherer
J. Electrochem. Soc. 142, 1895 – 1901 (1995)

Performance of Differently Crosslinked, Partially Fluorinated Proton Exchange Membranes in PEFC
F. N. Büchi, B. Gupta, O. Haas and G.G. Scherer
J. Electrochem. Soc. 142, 3044 – 3048 (1995)

Study of radiation-grafted FEP-G-polystyrene membranes as polymer electrolytes in fuel cells
F.N. Büchi, B. Gupta, O. Haas and G.G. Scherer
Electrochim. Acta, 40, 345-353 (1995)