A polybenzimidazole/ionic-liquid-graphite-oxide composite membrane for high temperature polymer electrolyte membrane fuel cells

Chenxi Xu; Xiaoteng Liu; Jigui Cheng; Keith Scott

doi:10.1016/j.jpowsour.2014.10.134

A polybenzimidazole/ionic-liquid-graphite-oxide composite membrane for high temperature polymer electrolyte membrane fuel cells

Chenxi Xu, Xiaoteng Liu, Jigui Cheng, Keith Scott

Mechanical and Construction Engineering Department

Research output: Contribution to journal › Article › peer-review

102 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	922-927
Journal	Journal of Power Sources
Volume	274
Early online date	28 Oct 2014
DOIs	https://doi.org/10.1016/j.jpowsour.2014.10.134
Publication status	Published - 15 Jan 2015

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title = "A polybenzimidazole/ionic-liquid-graphite-oxide composite membrane for high temperature polymer electrolyte membrane fuel cells",

abstract = "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.",

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doi = "10.1016/j.jpowsour.2014.10.134",

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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 -

A polybenzimidazole/ionic-liquid-graphite-oxide composite membrane for high temperature polymer electrolyte membrane fuel cells

Abstract

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