TY - JOUR
T1 - A polybenzimidazole/ionic-liquid-graphite-oxide composite membrane for high temperature polymer electrolyte membrane fuel cells
AU - Xu, Chenxi
AU - Liu, Xiaoteng
AU - Cheng, Jigui
AU - Scott, Keith
PY - 2015/1/15
Y1 - 2015/1/15
N2 - Graphite oxide is successfully functionalised by 3-aminopropyltriethoxysilane ionic liquid and used as a filler material in a polybenzimidazole (PBI) membrane for high temperature proton exchange membrane fuel cells. The ionic-liquid-graphite-oxide/polybenzimidazole (ILGO/PBI) composite membrane exhibits an appropriate level of proton conductivity when imbibed with phosphoric acid at low phosphoric acid loading, which promotes its use in fuel cells by avoiding acid leakage and materials corrosion. The ionic conductivities of the ILGO/PBI membranes at 175 °C are 0.035 S cm−1 and 0.025 S cm−1 at per repeat units of 3.5 and 2.0, respectively. The fuel cell performance of ILGO/PBI membranes exhibits a maximum power density of 320 mW cm−2 at 175 °C, which is higher than that of a pristine PBI membrane.
AB - Graphite oxide is successfully functionalised by 3-aminopropyltriethoxysilane ionic liquid and used as a filler material in a polybenzimidazole (PBI) membrane for high temperature proton exchange membrane fuel cells. The ionic-liquid-graphite-oxide/polybenzimidazole (ILGO/PBI) composite membrane exhibits an appropriate level of proton conductivity when imbibed with phosphoric acid at low phosphoric acid loading, which promotes its use in fuel cells by avoiding acid leakage and materials corrosion. The ionic conductivities of the ILGO/PBI membranes at 175 °C are 0.035 S cm−1 and 0.025 S cm−1 at per repeat units of 3.5 and 2.0, respectively. The fuel cell performance of ILGO/PBI membranes exhibits a maximum power density of 320 mW cm−2 at 175 °C, which is higher than that of a pristine PBI membrane.
U2 - 10.1016/j.jpowsour.2014.10.134
DO - 10.1016/j.jpowsour.2014.10.134
M3 - Article
SN - 0378-7753
VL - 274
SP - 922
EP - 927
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -