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- W2071783451 startingPage "211" @default.
- W2071783451 abstract "Nafion® 211 differs from previous versions of Nafion in that the membrane is cast from a dispersion rather than being melt-extruded. As such, the water sorption properties are different, as is the rate of increase in water content with temperature. Kinetic and mass-transport parameters for dispersion-cast Nafion® 211 were determined using solid-state electrochemistry in the temperature range 30–70 °C, 100% relative humidity, and 30 psi oxygen pressure. Exchange current densities, Tafel slopes, and transfer coefficients for ORR in Nafion® 211, are similar to those observed in Nafion® 117; mass-transport parameters are not. At 30 °C and 100% RH oxygen solubility and the diffusion coefficient is determined to be 1.16 × 10−5 mol cm−3 and 1.13 × 10−6 cm2 s−1, respectively. Oxygen permeability at 30 °C (1.28 × 10−11 mol cm−1 s−1) is lower than in Nafion® 117 (5.31 × 10−11 mol cm−1 s−1) by factor of 4, while at T > 60 °C the permeability of Nafion® 211 increases significantly to values higher than Nafion® 117, and is correlated with the increase in water content and hydration number (λ) with temperature." @default.
- W2071783451 created "2016-06-24" @default.
- W2071783451 creator A5015622325 @default.
- W2071783451 creator A5089046130 @default.
- W2071783451 date "2011-02-01" @default.
- W2071783451 modified "2023-09-26" @default.
- W2071783451 title "Highly temperature dependent mass-transport parameters for ORR in Nafion® 211" @default.
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- W2071783451 doi "https://doi.org/10.1016/j.jelechem.2010.12.004" @default.
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