Development of SLS fuel cell current collectors

Emerald - Tập 12 Số 5 - Trang 275-282 - 2006
SsuweiChen1, JeremyMurphy1, JasonHerlehy1, David L.Bourell1, Kristin L.Wood1
1Laboratory for Freeform Fabrication, Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas, USA

Tóm tắt

PurposeThis paper aims to present a new fabrication method for fuel cell current collectors. Demonstration of its usefulness and discussion of its impact on current collector design and performance are also given.Design/methodology/approachThe selective laser sintering (SLS) technique is used to create green parts followed by a high temperature curing process and pressureless infiltration treatment to meet basic part design requirements.FindingsA material system and process satisfying both manufacturing constraints and product property requirements can be used for fabrication of current collectors via SLS. Relative particle size and composition of the constituents play an important role in successful manufacture of the plates. Strategies to improve electrical conductivity are also discussed.Originality/valueA new manufacturing method has been developed for the construction of fuel cell current collectors that could generate opportunities for performance enhancement and fuel cell application by eliminating the constraints imposed by traditional fabrication processes.

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Tài liệu tham khảo

Argento, C. and Bouvard, D. (1996), “Modeling the effective thermal conductivity of random packing of spheres through densification”, International Journal of Heat and Mass Transfer, Vol. 39 No. 7, pp. 1343‐50.

Bhatia, G., Aggarwal, R.K., Malik, M. and Bahl, O.P. (1984), “Conversion of phenol formaldehyde resin to glass‐like carbon”, Journal of Materials Science, Vol. 19, pp. 1022‐8.

Boitsov, O.F., Chernyshev, L.I. and Skorokhod, V.V. (2003), “Effects of porous structure on the electrical conductivity of highly porous metal‐matrix materials”, Powder Metallurgy and Metal Ceramics, Vol. 42 Nos 1/2, pp. 88‐93.

Bueche, F. (1973), “A new class of switching materials”, Journal of Applied Physics, Vol. 44 No. 1, pp. 532‐3.

Fricke, H. (1924), “A mathematical treatment of the electric conductivity and capacity of disperse systems”, Journal of Physical Review, Vol. 24, pp. 575‐87.

Gardziella, A., Pilato, L.A. and Knop, A. (2000), Phenolic Resins, Springer, Berlin.

Heiser, J.A., King, J.A. and Konell, J.P. (2004), “Electrical conductivity of carbon filled nylon 6.6”, Advances in Polymer Technology, Vol. 23 No. 2, pp. 135‐46.

Koh, J. and Fortini, A. (1973), “Prediction of thermal conductivity and electrical resistivity of porous metallic materials”, International Journal of Heat and Mass Transfer, Vol. 16, pp. 2013‐22.

Kostornov, A.G. (2003), “Capillary transport of low‐viscosity liquids in porous metallic materials under the action of gravitation force”, Powder Metallurgy and Metal Ceramics, Vol. 42 Nos 9/10, pp. 447‐59.

Montes, J.M., Rodriguez, J.A. and Herrera, E.J. (2003), “Thermal and electrical conductivities of sintered powder compacts”, Powder Metallurgy, Vol. 46 No. 3, pp. 251‐6.

Schueler, R., Petermann, J., Schulte, K. and Wentzel, H. (1997), “Agglomeration and electrical percolation behavior of carbon black dispersed in epoxy resin”, Journal of Applied Polymer Science, Vol. 63 No. 13, pp. 1741‐6.

Sheng, P., Sichel, E.K. and Gittleman, J.I. (1978), “Fluctuation‐induced tunneling conduction in carbon‐polyvinylchloride composites”, Physical Review Letters, Vol. 40 No. 18, pp. 1197‐200.

Simmons, J.G. (1963), “Generalized formula for the electric tunnel effect between similar electrodes separated by a thin insulating film”, Journal of Applied Physics, Vol. 34 No. 6, pp. 1793‐803.

Tang, H., Chen, X., Tang, A. and Luo, Y. (1996), “Studies on the electrical conductivity of carbon black filled polymers”, Journal of Applied Polymer Science, Vol. 59, pp. 383‐7.

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Emerald

Tập 12 Số 5

275-282

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