Magnetotomography—a new method for analysing fuel cell performance and quality

摘要: Abstract Magnetotomography is a new method for the measurement and analysis of current density distribution fuel cells. The based on magnetic flux surrounding cell stack caused by inside stack. As it non-invasive, magnetotomography overcomes shortcomings traditional methods determination in cells [J. Stumper, S.A. Campell, D.P. Wilkinson, M.C. Johnson, M. Davis, In situ distributions PEM cells, Electrochem. Acta 43 (1998) 3773; S.J.C. Cleghorn, C.R. Derouin, M.S. Wilson, S. Gottesfeld, A printed circuit board approach to measuring cell, J. Appl. 28 663; Ch. Wieser, A. Helmbold, E. Gulzow, technique two-dimensional measurements electro-chemical 30 (2000) 803; Grinzinger, Methoden zur Ortsaufgelosten Strommessung Polymer Elektrolyt Brennstoffzellen, Diploma thesis, TU-Munchen, 2003; Y.-G. Yoon, W.-Y. Lee, T.-H. Yang, G.-G. Park, C.-S. Kim, Current single PEMFC, Power Sources 118 (2003) 193–199; M.M. Mench, C.Y. Wang, An applied direct methanol Soc. 150 A79–A85; Schonbauer, T. Kaz, H. Sander, Segmented bipolar plate polymer electrolyte in: Proceedings Second European PEMFC Forum, vol. 1, Lucerne/Switzerland, 2003, pp. 231–237; G. Bender, S.W. Mahlon, T.A. Zawodzinski, Further refinements segmented diagnosing performance 123 163–171]. After several years research complete prototype system now available stacks. This paper describes basic (fundamentals, hardware software) as well state development until December 2003. Initial findings full-size will be presented together with an outlook planned next steps.