TY - JOUR
T1 - Proton conduction of novel calcium phosphate nanocomposite membranes for high temperature PEM fuel cells applications
AU - Ka'ki, Ahmad
AU - Alraeesi, Abdulrahman
AU - Al-Othman, Amani
AU - Tawalbeh, Muhammad
N1 - Funding Information:
The authors would like to thank the United Arab Emirates University, United Arab Emirates for the financial support of the work, grant number 31N195. The authors also express their appreciation to the College of Engineering at the American University of Sharjah, United Arab Emirates for use of the facilities to conduct the experiments.
Funding Information:
The authors would like to thank the United Arab Emirates University , United Arab Emirates for the financial support of the work, grant number 31N195 . The authors also express their appreciation to the College of Engineering at the American University of Sharjah, United Arab Emirates for use of the facilities to conduct the experiments.
Publisher Copyright:
© 2021 Hydrogen Energy Publications LLC
PY - 2021/8/26
Y1 - 2021/8/26
N2 - This work describes the synthesis and evaluation of nanocomposite membranes based on calcium phosphate (CP)/ionic liquids (ILs) for high-temperature proton exchange membrane (PEM) fuel cells. Several composite membranes were synthesized by varying the mass ratios of ILs with respect to the CP and all supported on porous polytetrafluoroethylene (PTFE). The membranes exhibit high proton conductivities. Two ionic liquids were investigated in this study, namely, 1-Hexyl-3- methylimidazolium tricyanomethanide, [HMIM][C4N3−], and 1-Ethyl-3-methylimidazolium methanesulfonate, [EMIM][CH3O3S−]. At room temperature, the CP/PTFE/[HMIM][C4N3−] composite membrane possessed a high proton conductivity of 0.1 S cm−1. When processed at 200 °C, and fully anhydrous conditions, the membrane showed a conductivity of 3.14 × 10−3 S cm−1. Membranes based on CP/PTFE/[EMIM][CH3O3S−] on the other hand, had a maximum proton conductivity of 2.06 × 10−3 S cm−1 at room temperature. The proton conductivities reported in this work appear promising for the application in high-temperature PEMFCs operated above the boiling point of water.
AB - This work describes the synthesis and evaluation of nanocomposite membranes based on calcium phosphate (CP)/ionic liquids (ILs) for high-temperature proton exchange membrane (PEM) fuel cells. Several composite membranes were synthesized by varying the mass ratios of ILs with respect to the CP and all supported on porous polytetrafluoroethylene (PTFE). The membranes exhibit high proton conductivities. Two ionic liquids were investigated in this study, namely, 1-Hexyl-3- methylimidazolium tricyanomethanide, [HMIM][C4N3−], and 1-Ethyl-3-methylimidazolium methanesulfonate, [EMIM][CH3O3S−]. At room temperature, the CP/PTFE/[HMIM][C4N3−] composite membrane possessed a high proton conductivity of 0.1 S cm−1. When processed at 200 °C, and fully anhydrous conditions, the membrane showed a conductivity of 3.14 × 10−3 S cm−1. Membranes based on CP/PTFE/[EMIM][CH3O3S−] on the other hand, had a maximum proton conductivity of 2.06 × 10−3 S cm−1 at room temperature. The proton conductivities reported in this work appear promising for the application in high-temperature PEMFCs operated above the boiling point of water.
KW - Calcium phosphate
KW - Composite membranes
KW - Fuel cells
KW - High temperature PEM
KW - Ionic liquids
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U2 - 10.1016/j.ijhydene.2021.01.013
DO - 10.1016/j.ijhydene.2021.01.013
M3 - Article
AN - SCOPUS:85099971360
SN - 0360-3199
VL - 46
SP - 30641
EP - 30657
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 59
ER -