Functionally graded nano-porous gas diffusion layer for proton exchange membrane fuel cells under low relative humidity conditions
作者： A.M. Kannan , L. Cindrella , L. Munukutla
DOI: 10.1016/J.ELECTACTA.2007.10.013
关键词:
摘要: Abstract Gas diffusion layers (GDLs) were fabricated using commercially available carbon paper as macro-porous layer substrate. Functionally graded nano-porous designed by combining nano-fibers with nano-chain type Pureblack (75:25–0:100 wt.%) in the z -direction towards catalyst and Teflon content (say 15–30 wt.%) to obtain variation pore diameter also hydrohobicity. On top of layer, a thin hydrophilic inorganic oxide (fumed silica) was deposited retain moisture maintain electrolyte wet, especially when fuel cell is working at lower relative humidity (RH) conditions, which typical for automotive applications. The surface morphology, contact angle, bulk characteristics size distribution layered GDLs examined FESEM, Goniometer, Interferometer Hg Porosimeter, respectively. assembled into MEAs evaluated single PEMFC under various operating conditions (temperature RH) H 2 /O /air reactants. It observed that functionally showed an excellent performance peak power density about 0.46 W/cm 85 °C air 50% RH.
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sci-hub.se 参考文章(21)
S. Shimpalee, U. Beuscher, J.W. Van Zee, Analysis of GDL flooding effects on PEMFC performance Electrochimica Acta. ,vol. 52, pp. 6748- 6754 ,(2007) , 10.1016/J.ELECTACTA.2007.04.115
Minkmas Vatanatham Williams, Improved oxygen transport in hydrogen/air proton exchange membrane fuel cells PhDT. ,(2004)
Gu-Gon Park, Young-Jun Sohn, Tae-Hyun Yang, Young-Gi Yoon, Won-Yong Lee, Chang-Soo Kim, Effect of PTFE contents in the gas diffusion media on the performance of PEMFC Journal of Power Sources. ,vol. 131, pp. 182- 187 ,(2004) , 10.1016/J.JPOWSOUR.2003.12.037
E Antolini, R.R Passos, E.A Ticianelli, Effects of the carbon powder characteristics in the cathode gas diffusion layer on the performance of polymer electrolyte fuel cells Journal of Power Sources. ,vol. 109, pp. 477- 482 ,(2002) , 10.1016/S0378-7753(02)00112-X
M. Han, S.H. Chan, S.P. Jiang, Development of carbon-filled gas diffusion layer for polymer electrolyte fuel cells Journal of Power Sources. ,vol. 159, pp. 1005- 1014 ,(2006) , 10.1016/J.JPOWSOUR.2005.12.003
W YAN, C HSUEH, C SOONG, F CHEN, C CHENG, S MEI, Effects of fabrication processes and material parameters of GDL on cell performance of PEM fuel cell International Journal of Hydrogen Energy. ,vol. 32, pp. 4452- 4458 ,(2007) , 10.1016/J.IJHYDENE.2007.02.003
Z ZHAN, J XIAO, Y ZHANG, M PAN, R YUAN, Gas diffusion through differently structured gas diffusion layers of PEM fuel cells International Journal of Hydrogen Energy. ,vol. 32, pp. 4443- 4451 ,(2007) , 10.1016/J.IJHYDENE.2007.03.041
R. Roshandel, B. Farhanieh, E. Saievar-Iranizad, The effects of porosity distribution variation on PEM fuel cell performance Renewable Energy. ,vol. 30, pp. 1557- 1572 ,(2005) , 10.1016/J.RENENE.2004.11.017
W.M. Yan, C.Y. Soong, Falin Chen, H.S. Chu, Effects of flow distributor geometry and diffusion layer porosity on reactant gas transport and performance of proton exchange membrane fuel cells Journal of Power Sources. ,vol. 125, pp. 27- 39 ,(2004) , 10.1016/J.JPOWSOUR.2003.07.017
Han-Kyu Lee, Jong-Ho Park, Do-Young Kim, Tae-Hee Lee, A study on the characteristics of the diffusion layer thickness and porosity of the PEMFC Journal of Power Sources. ,vol. 131, pp. 200- 206 ,(2004) , 10.1016/J.JPOWSOUR.2003.12.039