Proton conductive membranes based on doped sulfonated polytriazole

M. Boaventura; M. L. Ponce; L. Brandão; A. Mendes; S. P. Nunes

doi:10.1016/j.ijhydene.2010.08.123

Proton conductive membranes based on doped sulfonated polytriazole

M. Boaventura, M. L. Ponce, L. Brandão, A. Mendes^*, S. P. Nunes

^*Corresponding author for this work

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

17 Scopus citations

Abstract

This work reports the preparation and characterization of proton conducting sulfonated polytriazole membranes doped with three different agents: 1H-benzimidazole-2-sulfonic acid, benzimidazole and phosphoric acid. The modified membranes were characterized by scanning electron microscopy (SEM), infrared spectra, thermogravimetric analysis (TGA), dynamical mechanical thermal analysis (DMTA) and electrochemical impedance spectroscopy (EIS). The addition of doping agents resulted in a decrease of the glass transition temperature. For membranes doped with 85 wt.% phosphoric acid solution proton conductivity increased up to 2·10^-3 S cm^-1 at 120 °C and at 5% relative humidity. The performance of the phosphoric acid doped membranes was evaluated in a fuel cell set-up at 120 °C and 2.5% relative humidity.

Original language	English (US)
Pages (from-to)	12054-12064
Number of pages	11
Journal	International Journal of Hydrogen Energy
Volume	35
Issue number	21
DOIs	https://doi.org/10.1016/j.ijhydene.2010.08.123
State	Published - Nov 2010

Keywords

High temperature fuel cell
Proton conductivity
Sulfonated polytriazole

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

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

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10.1016/j.ijhydene.2010.08.123

Cite this

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title = "Proton conductive membranes based on doped sulfonated polytriazole",

abstract = "This work reports the preparation and characterization of proton conducting sulfonated polytriazole membranes doped with three different agents: 1H-benzimidazole-2-sulfonic acid, benzimidazole and phosphoric acid. The modified membranes were characterized by scanning electron microscopy (SEM), infrared spectra, thermogravimetric analysis (TGA), dynamical mechanical thermal analysis (DMTA) and electrochemical impedance spectroscopy (EIS). The addition of doping agents resulted in a decrease of the glass transition temperature. For membranes doped with 85 wt.% phosphoric acid solution proton conductivity increased up to 2·10-3 S cm-1 at 120 °C and at 5% relative humidity. The performance of the phosphoric acid doped membranes was evaluated in a fuel cell set-up at 120 °C and 2.5% relative humidity.",

keywords = "High temperature fuel cell, Proton conductivity, Sulfonated polytriazole",

author = "M. Boaventura and Ponce, {M. L.} and L. Brand{\~a}o and A. Mendes and Nunes, {S. P.}",

year = "2010",

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doi = "10.1016/j.ijhydene.2010.08.123",

language = "English (US)",

volume = "35",

pages = "12054--12064",

journal = "International Journal of Hydrogen Energy",

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TY - JOUR

T1 - Proton conductive membranes based on doped sulfonated polytriazole

AU - Boaventura, M.

AU - Ponce, M. L.

AU - Brandão, L.

AU - Mendes, A.

AU - Nunes, S. P.

PY - 2010/11

Y1 - 2010/11

N2 - This work reports the preparation and characterization of proton conducting sulfonated polytriazole membranes doped with three different agents: 1H-benzimidazole-2-sulfonic acid, benzimidazole and phosphoric acid. The modified membranes were characterized by scanning electron microscopy (SEM), infrared spectra, thermogravimetric analysis (TGA), dynamical mechanical thermal analysis (DMTA) and electrochemical impedance spectroscopy (EIS). The addition of doping agents resulted in a decrease of the glass transition temperature. For membranes doped with 85 wt.% phosphoric acid solution proton conductivity increased up to 2·10-3 S cm-1 at 120 °C and at 5% relative humidity. The performance of the phosphoric acid doped membranes was evaluated in a fuel cell set-up at 120 °C and 2.5% relative humidity.

AB - This work reports the preparation and characterization of proton conducting sulfonated polytriazole membranes doped with three different agents: 1H-benzimidazole-2-sulfonic acid, benzimidazole and phosphoric acid. The modified membranes were characterized by scanning electron microscopy (SEM), infrared spectra, thermogravimetric analysis (TGA), dynamical mechanical thermal analysis (DMTA) and electrochemical impedance spectroscopy (EIS). The addition of doping agents resulted in a decrease of the glass transition temperature. For membranes doped with 85 wt.% phosphoric acid solution proton conductivity increased up to 2·10-3 S cm-1 at 120 °C and at 5% relative humidity. The performance of the phosphoric acid doped membranes was evaluated in a fuel cell set-up at 120 °C and 2.5% relative humidity.

KW - High temperature fuel cell

KW - Proton conductivity

KW - Sulfonated polytriazole

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U2 - 10.1016/j.ijhydene.2010.08.123

DO - 10.1016/j.ijhydene.2010.08.123

M3 - Article

AN - SCOPUS:77957694138

SN - 0360-3199

VL - 35

SP - 12054

EP - 12064

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 21

ER -

Proton conductive membranes based on doped sulfonated polytriazole

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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