TY - JOUR
T1 - Performance of membrane electrode assemblies based on proton exchange membranes prepared by pre-irradiation induced grafting
AU - Li, Jingye
AU - Matsuura, Akio
AU - Kakigi, Tomoyuki
AU - Miura, Takaharu
AU - Oshima, Akihiro
AU - Washio, Masakazu
N1 - Funding Information:
The development of the new PEM using RX-PTFE was supported by projects of “Research and Development of Polymer Electrolyte Fuel Cell” in the New Energy and Industrial Technology Development Organization (NEDO). One of the authors (Dr. J.Y. Li) acknowledges the Japan Society for the Promotion of Science (JSPS) for the fellowship.
PY - 2006/10/20
Y1 - 2006/10/20
N2 - Proton exchange membranes (PEMs) were prepared by pre-irradiation induced grafting of styrene (S) or styrene/divinylbenzene (S/DVB) into the radiation-crosslinked polytetrafluoroethylene (RX-PTFE) films and then sulfonated. The thicknesses of the obtained PEMs were lower than 20 μm and the ion exchange capacity (IEC) values were around 2 meq g-1. The surfaces of the PEMs and carbon electrodes were coated with Nafion® dispersion, and then membrane electrode assembles (MEAs) were prepared by hot-pressing them together. A MEA based on a Nafion® 112 membrane was also prepared under same procedure for comparison. The performances of the MEAs in a single cell were tested under different cell temperatures and humidifications. Electrochemical impedance spectra (EIS) were measured with ac frequencies which ranged from 100 kHz to 1 Hz at a dc density of 0.5 A cm-2. The obtained impedance curves in Nyquist representation were semicircular.
AB - Proton exchange membranes (PEMs) were prepared by pre-irradiation induced grafting of styrene (S) or styrene/divinylbenzene (S/DVB) into the radiation-crosslinked polytetrafluoroethylene (RX-PTFE) films and then sulfonated. The thicknesses of the obtained PEMs were lower than 20 μm and the ion exchange capacity (IEC) values were around 2 meq g-1. The surfaces of the PEMs and carbon electrodes were coated with Nafion® dispersion, and then membrane electrode assembles (MEAs) were prepared by hot-pressing them together. A MEA based on a Nafion® 112 membrane was also prepared under same procedure for comparison. The performances of the MEAs in a single cell were tested under different cell temperatures and humidifications. Electrochemical impedance spectra (EIS) were measured with ac frequencies which ranged from 100 kHz to 1 Hz at a dc density of 0.5 A cm-2. The obtained impedance curves in Nyquist representation were semicircular.
KW - Fuel cell
KW - Membrane electrode assemble
KW - Pre-irradiation induced grafting
KW - Proton exchange membrane
KW - Styrene/divinylbenzene
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U2 - 10.1016/j.jpowsour.2006.04.100
DO - 10.1016/j.jpowsour.2006.04.100
M3 - Article
AN - SCOPUS:33748978757
SN - 0378-7753
VL - 161
SP - 99
EP - 105
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 1
ER -
