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Effect of the Anodic Diffusion Layer on the Performance of Liquid Fuel Cells
Author(s) -
Xie F.,
Chen C.,
Meng H.,
Shen P. K.
Publication year - 2007
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.200600043
Subject(s) - methanol fuel , diffusion , anode , materials science , methanol , porosity , mass transfer , diffusion layer , chemical engineering , layer (electronics) , micrometer , cathode , phase (matter) , chemistry , nanotechnology , composite material , chromatography , electrode , thermodynamics , organic chemistry , optics , physics , engineering
Novel diffusion layers for liquid direct methanol fuel cells (DMFCs) are designed and fabricated. The factors affecting the performance of DMFCs are determined. The results demonstrate that the diffusion layers made by micrometer scale particles and a hydrophilic binder can reduce the liquid sealing effect and increase the mass transfer property. The performance of DMFCs made using novel diffusion layers is greatly improved. The porous structure of such diffusion layers may improve the channels therein, which allows liquid methanol to diffuse in and gaseous CO 2 to diffuse out easily. Higher methanol concentrations can be used due to the formation of a larger three‐phase interfacial area.