Phosphoric acid doped imidazolium polysulfone membranes for high temperature proton exchange membrane fuel cells

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Phosphoric acid doped imidazolium polysulfone membranes for high temperature proton exchange membrane fuel cells. / Yang, Jingshuai; Li, Qingfeng; Jensen, Jens Oluf; Pan, Chao; Cleemann, Lars Nilausen; Bjerrum, Niels J.; He, Ronghuan.

In: Journal of Power Sources, Vol. 205, 2012, p. 114-121.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Yang, Jingshuai; Li, Qingfeng; Jensen, Jens Oluf; Pan, Chao; Cleemann, Lars Nilausen; Bjerrum, Niels J.; He, Ronghuan / Phosphoric acid doped imidazolium polysulfone membranes for high temperature proton exchange membrane fuel cells.

In: Journal of Power Sources, Vol. 205, 2012, p. 114-121.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{b9f0f15103c641c199dd295173328615,
title = "Phosphoric acid doped imidazolium polysulfone membranes for high temperature proton exchange membrane fuel cells",
keywords = "Proton exchange membrane, High temperature PEMFC, Phosphoric acid, Imidazolium, Polysulfone",
publisher = "Elsevier S.A.",
author = "Jingshuai Yang and Qingfeng Li and Jensen, {Jens Oluf} and Chao Pan and Cleemann, {Lars Nilausen} and Bjerrum, {Niels J.} and Ronghuan He",
year = "2012",
doi = "10.1016/j.jpowsour.2012.01.038",
volume = "205",
pages = "114--121",
journal = "Journal of Power Sources",
issn = "0378-7753",

}

RIS

TY - JOUR

T1 - Phosphoric acid doped imidazolium polysulfone membranes for high temperature proton exchange membrane fuel cells

A1 - Yang,Jingshuai

A1 - Li,Qingfeng

A1 - Jensen,Jens Oluf

A1 - Pan,Chao

A1 - Cleemann,Lars Nilausen

A1 - Bjerrum,Niels J.

A1 - He,Ronghuan

AU - Yang,Jingshuai

AU - Li,Qingfeng

AU - Jensen,Jens Oluf

AU - Pan,Chao

AU - Cleemann,Lars Nilausen

AU - Bjerrum,Niels J.

AU - He,Ronghuan

PB - Elsevier S.A.

PY - 2012

Y1 - 2012

N2 - A novel acid–base polymer membrane is prepared by doping of imidazolium polysulfone with phosphoric acid for high temperature proton exchange membrane fuel cells. Polysulfone is first chloromethylated, followed by functionalization of the chloromethylated polysulfone with alkyl imidazoles i.e. methyl (MePSU), ethyl (EtPSU) and butyl (BuPSU) imidazoliums, as revealed by 1H NMR spectra. The imidazolium polysulfone membranes are then doped with phosphoric acid and used as a proton exchange membrane electrolyte in fuel cells. An acid doping level of about 10–11mol H3PO4 per mole of the imidazolium group is achieved in 85wt% H3PO4 at room temperature. The membranes exhibit a proton conductivity of 0.015–0.022Scm−1 at 130–150°C under 15mol% water vapor in air, and a tensile strength of 5–6MPa at 130°C under ambient humidity. Fuel cell tests show an open circuit voltage as high as 0.96V and a peak power density of 175–204mWcm−2 at 150°C with unhumidified hydrogen and air under ambient pressure.

AB - A novel acid–base polymer membrane is prepared by doping of imidazolium polysulfone with phosphoric acid for high temperature proton exchange membrane fuel cells. Polysulfone is first chloromethylated, followed by functionalization of the chloromethylated polysulfone with alkyl imidazoles i.e. methyl (MePSU), ethyl (EtPSU) and butyl (BuPSU) imidazoliums, as revealed by 1H NMR spectra. The imidazolium polysulfone membranes are then doped with phosphoric acid and used as a proton exchange membrane electrolyte in fuel cells. An acid doping level of about 10–11mol H3PO4 per mole of the imidazolium group is achieved in 85wt% H3PO4 at room temperature. The membranes exhibit a proton conductivity of 0.015–0.022Scm−1 at 130–150°C under 15mol% water vapor in air, and a tensile strength of 5–6MPa at 130°C under ambient humidity. Fuel cell tests show an open circuit voltage as high as 0.96V and a peak power density of 175–204mWcm−2 at 150°C with unhumidified hydrogen and air under ambient pressure.

KW - Proton exchange membrane

KW - High temperature PEMFC

KW - Phosphoric acid

KW - Imidazolium

KW - Polysulfone

U2 - 10.1016/j.jpowsour.2012.01.038

DO - 10.1016/j.jpowsour.2012.01.038

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

VL - 205

SP - 114

EP - 121

ER -