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http://dx.doi.org/10.7316/khnes.2011.22.1.060

A Characterization Study on Nafion$^{(R)}$/$ZrO_2-TiO_2$ Composite Membranes for PEMFC Operation at High Temperature and Low Humidity  

Park, Ki-Tae (Department of Chemical and Biological Engineering, Korea University)
Chun, Jeong-Hwan (Department of Chemical and Biological Engineering, Korea University)
Choi, Dong-Woong (Department of Chemical and Biological Engineering, Korea University)
Kim, Sung-Hyun (Department of Chemical and Biological Engineering, Korea University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.22, no.1, 2011 , pp. 60-68 More about this Journal
Abstract
[ $ZrO_2-TiO_2$ ]binary oxides with various Zr:Ti molar ratios were prepared by sol-gel method and Nafion$^{(R)}$/$ZrO_2-TiO_2$ composite membranes were fabricated for proton exchange membrane fuel cells (PEMFCs) at high temperature and low humidity. Water uptake, Ion exchange capacity (IEC), and proton conductivity of Nafion$^{(R)}$/$ZrO_2-TiO_2$ composite membranes were characterized and these composite membranes were tested in a single cell at $120^{\circ}C$ with various relative humidity (R.H.) conditions. The obtained results were compared with the unmodified membranes (Nafion$^{(R)}$ 112 and Recast Nafion$^{(R)}$). A Nafion$^{(R)}$/$ZrO_2-TiO_2$ composite membrane with 1:3 of Zr:Ti molar ratio showed the highest performance. The performance showed 500 mW/$cm^2$ (0.499V) at $120^{\circ}C$, 50% R. H., and 2 atm.
Keywords
PEMFC; $ZrO_2-TiO_2$ binary oxides; Sol-gel method; Composite membrane; Water uptake; IEC;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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