Effective-Diffusivity Measurement of Partially-Saturated Fuel-Cell Gas-Diffusion Layers
Source abstract
Abstract
In proton-exchange-membrane fuel cells, flooding of the cathode gas-diffusion layer (GDL) hinders the gaseous reactant transport and thereby limits cell performance. The understanding of the effective diffusivity of the reactants through the GDL is essential for performance optimization and material design. In this paper, the effective diffusivities of unsaturated and partially-saturated GDLs are experimentally examined using an ex-situ electrochemical limiting-current method for various, uncompressed GDLs including different PTFE loadings. For unsaturated (including PTFE loadings) and partially-saturated (no PTFE) GDLs, the experimental results follow a power law with respect to porosity and saturation, respectively. PTFE treatment favorably changes the liquid distribution for improved gas-transport pathways, and a new correlation is proposed using a cumulative log-normal distribution function; however, the impact of PTFE on the overall effective diffusivity depends on the specific GDL structure. This work provides insights for fuel-cell models and transport phenomena, which can lead to the optimal GDL material design and cell operation.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Fuel Cells and Related Materials · Electrocatalysts for Energy Conversion · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (53)
Show source-provided references
1. Larminie J. Dicks A. , Fuel Cell Systems Explained, 2nd ed. (Wiley, Chichester, 2003).10.1002/9781118878330 ↗
2. 10.1021/cr020718s10.1021/cr020718s ↗
3. 10.1021/cr020729l10.1021/cr020729l ↗
4. 10.1016/j.ijhydene.2011.01.03610.1016/j.ijhydene.2011.01.036 ↗
5. 10.1149/1.359457810.1149/1.3594578 ↗
6. 10.1016/j.electacta.2008.07.03410.1016/j.electacta.2008.07.034 ↗
7. Kaviany M. , Principles of Heat Transfer in Porous Media, 2nd ed. (Springer Verlag, New York, 1995).10.1007/978-1-4612-4254-3 ↗
8. 10.1016/S0017-9310(03)00305-310.1016/S0017-9310(03)00305-3 ↗
9. 10.1149/1.222125110.1149/1.2221251 ↗
10. 10.1002/andp.1935416070510.1002/andp.19354160705 ↗
11. 10.1149/1.164614810.1149/1.1646148 ↗
12. 10.1149/1.242750510.1149/1.2427505 ↗
13. 10.1149/1.300556410.1149/1.3005564 ↗
14. 10.1021/ef900653x10.1021/ef900653x ↗
15. 10.1016/j.electacta.2011.12.11010.1016/j.electacta.2011.12.110 ↗
16. 10.1016/j.jelechem.2007.09.01410.1016/j.jelechem.2007.09.014 ↗
17. 10.1149/1.315222610.1149/1.3152226 ↗
18. 10.1016/j.ijheatmasstransfer.2009.02.03210.1016/j.ijheatmasstransfer.2009.02.032 ↗
19. 10.1002/aic.69039030410.1002/aic.690390304 ↗
20. 10.1002/aic.69048010410.1002/aic.690480104 ↗
21. 10.1016/j.apenergy.2009.05.00610.1016/j.apenergy.2009.05.006 ↗
22. 10.1016/j.jpowsour.2007.04.05910.1016/j.jpowsour.2007.04.059 ↗
23. 10.1016/j.electacta.2009.06.07010.1016/j.electacta.2009.06.070 ↗
24. 10.1007/BF0248048910.1007/BF02480489 ↗
25. 10.1149/1.357759710.1149/1.3577597 ↗
26. Shiomi T. Fu R. S. Pasaogullari U. Tabuchi Y. Miyazaki S. Kubo N. Shinohara K. Hussey D. S. Jacobson D. L. , in ASME Conf. Proc. (2010), pp. 667–676.10.1115/FuelCell2010-33225 ↗
27. Iwasaki D. Utaka Y. Tasaki Y. Wang S. , in ASME Conf. Proc. (2008), pp. 1279–1284.
28. Hussey D. S. Spernjak D. Weber A. Z. Mukundan R. Fairweather J. Brosha E. L. Davey J. Spendelow J. S. Jacobson D. L. Borup R. L. , J. Appl. Phys. submitted (2012).
29. Iwasaki D. Utaka Y. Tasaki Y. Wang S. , in ASME Conf. Proc. (2008), pp. 1279–1284.
30. 10.1016/j.ijhydene.2011.04.15210.1016/j.ijhydene.2011.04.152 ↗
31. 10.1149/1.354603810.1149/1.3546038 ↗
32. 10.1007/s10800-008-9512-810.1007/s10800-008-9512-8 ↗
33. 10.1149/1.348144310.1149/1.3481443 ↗
34. 10.1021/la203373710.1021/la2033737 ↗
35. 10.1016/j.jpowsour.2005.05.08610.1016/j.jpowsour.2005.05.086 ↗
36. 10.1016/j.electacta.2008.02.06810.1016/j.electacta.2008.02.068 ↗
37. Green D. W. Perry R. H. , Perry's Chemical Engineers’ Handbook, 8th ed. (McGraw-Hill, 2008).
38. 10.1149/1.163915710.1149/1.1639157 ↗
39. 10.1139/p72-22110.1139/p72-221 ↗
40. 10.1016/j.jpowsour.2009.08.06510.1016/j.jpowsour.2009.08.065 ↗
41. 10.1149/1.359655610.1149/1.3596556 ↗
42. 10.1149/1.348463210.1149/1.3484632 ↗
43. 10.1016/j.jpowsour.2010.09.04210.1016/j.jpowsour.2010.09.042 ↗
44. 10.1016/j.ijheatmasstransfer.2010.02.04610.1016/j.ijheatmasstransfer.2010.02.046 ↗
45. 10.1016/j.ijheatmasstransfer.2011.02.02910.1016/j.ijheatmasstransfer.2011.02.029 ↗
46. 10.1149/2.052205jes10.1149/2.052205jes ↗
47. 10.1016/j.jpowsour.2010.03.01110.1016/j.jpowsour.2010.03.011 ↗
48. 10.1016/j.jpowsour.2004.01.03010.1016/j.jpowsour.2004.01.030 ↗
49. 10.1016/j.jpowsour.2003.12.03710.1016/j.jpowsour.2003.12.037 ↗
50. 10.1149/1.359764410.1149/1.3597644 ↗
51. 10.1016/j.jpowsour.2003.09.07210.1016/j.jpowsour.2003.09.072 ↗
52. 10.1149/1.185105910.1149/1.1851059 ↗
53. 10.1016/j.jpowsour.2011.11.00110.1016/j.jpowsour.2011.11.001 ↗