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Nafion–Carbon Nanocomposite Membranes Prepared Using Hydrothermal Carbonization for Proton‐Exchange‐Membrane Fuel Cells
Author(s) -
Chai Zhanli,
Wang Cheng,
Zhang Hongjie,
Doherty Cara M.,
Ladewig Bradley P.,
Hill Anita J.,
Wang Huanting
Publication year - 2010
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201001412
Subject(s) - materials science , nafion , membrane , proton exchange membrane fuel cell , chemical engineering , direct methanol fuel cell , fourier transform infrared spectroscopy , thermogravimetric analysis , carbonization , nanocomposite , hydrothermal carbonization , scanning electron microscope , composite material , chemistry , electrochemistry , electrode , biochemistry , anode , engineering
Nafion–carbon (NC) composite membranes were prepared by hydrothermal treatment of Nafion membrane impregnated with glucose solution. The carbon loading of the NC membrane was tuned by controlling the hydrothermal carbonization time. X‐ray diffraction, Fourier‐transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and positron annihilation lifetime spectroscopy were used to characterize plain Nafion and NC composite membranes. Nafion–carbon composite membranes exhibited better proton conductivity and reduced methanol permeability than those of the plain Nafion membrane. A single cell prepared with the NC composite membrane with a carbon loading of 3.6 wt% exhibited the highest cell performance. Compared with the cell performance of plain Nafion membrane, the maximum power density of the new cell improved by 31.7% for an H 2 /O 2 fuel cell at room temperature, and by 44.0% for a direct methanol fuel cell at 60 °C.