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Keywords: methanol crossover
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Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. May 2023, 20(2): 020903.
Paper No: JEECS-22-1142
Published Online: December 9, 2022
... to lower temperature testing. The results for 7.5M methanol fuel show a reduction of up to 25% in methanol crossover, translating to a peak power density that increases from 3.9 to 9.5 mW/cm 2 when using a Gr-coated PEM compared to a Nafion PEM at 30 °C. Email: nathanhmetzger@ku.edu Email...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. November 2021, 18(4): 040904.
Paper No: JEECS-21-1038
Published Online: June 8, 2021
... Email: xjl@ncepu.edu.cn Email: xianglinli@ku.edu 07 02 2021 30 04 2021 02 05 2021 08 06 2021 Note that the parasitic current density due to methanol crossover, given as I p = 6 FN M for the catalyst based on platinum group metals, equals to zero for the PGM-free...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2022, 19(1): 010904.
Paper No: JEECS-20-1185
Published Online: March 23, 2021
... pressure and high mass transfer resistance of liquid, the MPL and CL should avoid micro-cracks during manufacture. Distributions of pore size and wettability of the GDL and MPL have been designed to reduce the methanol crossover and improve fuel efficiency. The model results provide design guidance...
Journal Articles
Article Type: Research-Article
J. Electrochem. En. Conv. Stor. June 2014, 11(3): 031004.
Paper No: FC-12-1054
Published Online: January 24, 2014
... and Nafion-CaO-ZrOH has the lowest free volume. Higher water sorption has the benefit of higher proton conductivity, since protons transfer mainly through water molecules. On the other hand, lower water uptake leads to lower methanol crossover and a lower swelling degree, which in turn causes membrane...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2012, 9(1): 011012.
Published Online: December 22, 2011
... are difficult to elucidate from full-cell polarization (i.e., voltage versus current) behavior. This study outlines a strategy to use current and voltage relationships from anode half-cells, cathode half-cells, and hydrogen pump coupled with methanol crossover data and a mathematical model. In this way, all...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. April 2011, 8(2): 021011.
Published Online: November 30, 2010
...Hafez Bahrami; Amir Faghri A two-dimensional, steady state, nonisothermal, nonequilibrium, multifluid, two-phase flow model is employed to investigate fuel delivery characteristics, as well as the strong relation between water transport through the membrane and methanol crossover. A porous layer...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2011, 8(1): 011009.
Published Online: November 3, 2010
..., and simple design. However, a number of issues need to be resolved before DMFC commercialization, such as the methanol crossover and water crossover, which must be minimized in portable DMFCs. In the present work, a detailed experimental study on the performance of an “in-house” developed DMFC with 25 cm 2...
Journal Articles
Article Type: Technical Papers
J. Electrochem. En. Conv. Stor. August 2007, 4(3): 248–254.
Published Online: October 4, 2006
...Guo-Bin Jung; Ay Su; Cheng-Hsin Tu; Fang-Bor Weng; Shih-Hung Chan; Ruey-Yi Lee; Szu-Han Wu The performances of direct methanol fuel cells are largely dependent on the methanol crossover, while the amount of methanol crossover is reported to strongly rely on membrane materials and thickness...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2006, 3(1): 8–12.
Published Online: August 19, 2005
... to 280 mW at 3 M under air-forced mode. The more concentrated methanol solution attains higher power due to instant take away of the methanol crossover through the membrane while the oxygen within the air is ready to react with the proton from the membrane with an appropriate rate and current output...