Polybenzimidazole membranes for direct methanol fuel cell: Acid-doped or alkali-doped?

Long Yun Li; Bor Chern Yu; Chao Ming Shih; Shingjiang Jessie Lue

doi:10.1016/j.jpowsour.2015.04.018

Polybenzimidazole membranes for direct methanol fuel cell: Acid-doped or alkali-doped?

Long Yun Li, Bor Chern Yu, Chao Ming Shih, Shingjiang Jessie Lue^*

^*Corresponding author for this work

Department of Chemical and Materials Engineering

Chang Gung University

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

25 Scopus citations

Abstract

Polybenzimidazole (PBI) films immersed in 2 M phosphoric acid (H₃PO₄) or 6 M potassium hydroxide (KOH) solution form electrolytes for conducting proton or hydroxide, respectively. A direct methanol fuel cell (DMFC) with the alkali-KOH doped PBI gives 117.9 mW cm^-2 of power output which is more than 2 times greater than the power density of 46.5 mW cm^-2 with the H₃PO₄-doped PBI (vs.) when both of the DMFCs use a micro porous layer (MPL) in a gas-fed cathode and a MPL-free anode and are operated at 90 °C. When the MPL-free anode and cathode are used and the fuel flow rate is tripled, the peak power density of alkaline DMFC reaches 158.9 mW cm^-2.

Original language	English
Pages (from-to)	386-395
Number of pages	10
Journal	Journal of Power Sources
Volume	287
DOIs	https://doi.org/10.1016/j.jpowsour.2015.04.018
State	Published - 01 08 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V.

Keywords

Micro porous layer (MPL)
Polybenzimidazole (PBI)
Power density

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2015.04.018

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title = "Polybenzimidazole membranes for direct methanol fuel cell: Acid-doped or alkali-doped?",

abstract = "Polybenzimidazole (PBI) films immersed in 2 M phosphoric acid (H3PO4) or 6 M potassium hydroxide (KOH) solution form electrolytes for conducting proton or hydroxide, respectively. A direct methanol fuel cell (DMFC) with the alkali-KOH doped PBI gives 117.9 mW cm-2 of power output which is more than 2 times greater than the power density of 46.5 mW cm-2 with the H3PO4-doped PBI (vs.) when both of the DMFCs use a micro porous layer (MPL) in a gas-fed cathode and a MPL-free anode and are operated at 90 °C. When the MPL-free anode and cathode are used and the fuel flow rate is tripled, the peak power density of alkaline DMFC reaches 158.9 mW cm-2.",

keywords = "Micro porous layer (MPL), Polybenzimidazole (PBI), Power density",

author = "Li, {Long Yun} and Yu, {Bor Chern} and Shih, {Chao Ming} and Lue, {Shingjiang Jessie}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = aug,

day = "1",

doi = "10.1016/j.jpowsour.2015.04.018",

language = "英语",

volume = "287",

pages = "386--395",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Polybenzimidazole membranes for direct methanol fuel cell

T2 - Acid-doped or alkali-doped?

AU - Li, Long Yun

AU - Yu, Bor Chern

AU - Shih, Chao Ming

AU - Lue, Shingjiang Jessie

PY - 2015/8/1

Y1 - 2015/8/1

N2 - Polybenzimidazole (PBI) films immersed in 2 M phosphoric acid (H3PO4) or 6 M potassium hydroxide (KOH) solution form electrolytes for conducting proton or hydroxide, respectively. A direct methanol fuel cell (DMFC) with the alkali-KOH doped PBI gives 117.9 mW cm-2 of power output which is more than 2 times greater than the power density of 46.5 mW cm-2 with the H3PO4-doped PBI (vs.) when both of the DMFCs use a micro porous layer (MPL) in a gas-fed cathode and a MPL-free anode and are operated at 90 °C. When the MPL-free anode and cathode are used and the fuel flow rate is tripled, the peak power density of alkaline DMFC reaches 158.9 mW cm-2.

AB - Polybenzimidazole (PBI) films immersed in 2 M phosphoric acid (H3PO4) or 6 M potassium hydroxide (KOH) solution form electrolytes for conducting proton or hydroxide, respectively. A direct methanol fuel cell (DMFC) with the alkali-KOH doped PBI gives 117.9 mW cm-2 of power output which is more than 2 times greater than the power density of 46.5 mW cm-2 with the H3PO4-doped PBI (vs.) when both of the DMFCs use a micro porous layer (MPL) in a gas-fed cathode and a MPL-free anode and are operated at 90 °C. When the MPL-free anode and cathode are used and the fuel flow rate is tripled, the peak power density of alkaline DMFC reaches 158.9 mW cm-2.

KW - Micro porous layer (MPL)

KW - Polybenzimidazole (PBI)

KW - Power density

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U2 - 10.1016/j.jpowsour.2015.04.018

DO - 10.1016/j.jpowsour.2015.04.018

M3 - 文章

AN - SCOPUS:84927924844

SN - 0378-7753

VL - 287

SP - 386

EP - 395

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Polybenzimidazole membranes for direct methanol fuel cell: Acid-doped or alkali-doped?

Abstract

Bibliographical note

Keywords

UN SDGs

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