Sulfonated poly(ether ether ketone)/poly(ether sulfone) composite membranes as an alternative proton exchange membrane in microbial fuel cells

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Abstract

Custom-made proton exchange membranes (PEM) are synthesized by incorporating sulfonated poly(ether ether ketone) (SPEEK) in poly(ether sulfone) (PES) for electricity generation in microbial fuel cells (MFCs). The composite PES/SPEEK membranes at various composition of SPEEK are prepared by the phase inversion method. The membranes are characterized by measuring roughness, proton conductivity, oxygen diffusion, water crossover and electrochemical impedance. The conductivity of hydrophobic PES membrane increases when a small amount (3-5%) of hydrophilic SPEEK is added. The electrochemical impedance spectra shows that the conductivity and capacitance of PES/SPEEK composite membranes during MFC operation are reduced from 6.15 × 10-7 to 6.93 × 10-5 (3197 -162 ) and from 3.00 × 10-7 to 1.56 × 10-3 F, respectively when 5% of SPEEK added into PES membrane. The PES/SPEEK 5% membrane has the highest performance compared to other membranes with a maximum power density of 170 mW m-2 at the maximum current density of 340 mA m-2. However, the interfacial reaction between the membrane and the cathode with Pt catalyst indicates moderate reaction efficiency compared to other membranes. The COD removal efficiency of MFCs with composite membrane PES/SPEEK 5% is nearly 26-fold and 2-fold higher than that of MFCs with Nafion 112 and Nafion 117 membranes respectively. The results suggest that the PES/SPEEK composite membrane is a promising alternative to the costly perfluorosulfonate membranes presently used as separators in MFC systems.

Original languageEnglish
Pages (from-to)11409-11424
Number of pages16
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number15
DOIs
Publication statusPublished - Aug 2012

Fingerprint

Microbial fuel cells
Polyether ether ketones
sulfones
Composite membranes
ketones
fuel cells
Ethers
ethers
Ion exchange
Protons
membranes
Membranes
composite materials
protons
Proton conductivity
Surface chemistry
Separators
Cathodes
Current density
Capacitance

Keywords

  • Electricity generation
  • Electrochemical impedance
  • Microbial fuel cell
  • Sulfonated poly(ether ether ketone)/poly(ether sulfone) membrane
  • Water crossover

ASJC Scopus subject areas

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

Cite this

@article{463e18619cbb427b9738ba42c9bf3ce8,
title = "Sulfonated poly(ether ether ketone)/poly(ether sulfone) composite membranes as an alternative proton exchange membrane in microbial fuel cells",
abstract = "Custom-made proton exchange membranes (PEM) are synthesized by incorporating sulfonated poly(ether ether ketone) (SPEEK) in poly(ether sulfone) (PES) for electricity generation in microbial fuel cells (MFCs). The composite PES/SPEEK membranes at various composition of SPEEK are prepared by the phase inversion method. The membranes are characterized by measuring roughness, proton conductivity, oxygen diffusion, water crossover and electrochemical impedance. The conductivity of hydrophobic PES membrane increases when a small amount (3-5{\%}) of hydrophilic SPEEK is added. The electrochemical impedance spectra shows that the conductivity and capacitance of PES/SPEEK composite membranes during MFC operation are reduced from 6.15 × 10-7 to 6.93 × 10-5 (3197 -162 ) and from 3.00 × 10-7 to 1.56 × 10-3 F, respectively when 5{\%} of SPEEK added into PES membrane. The PES/SPEEK 5{\%} membrane has the highest performance compared to other membranes with a maximum power density of 170 mW m-2 at the maximum current density of 340 mA m-2. However, the interfacial reaction between the membrane and the cathode with Pt catalyst indicates moderate reaction efficiency compared to other membranes. The COD removal efficiency of MFCs with composite membrane PES/SPEEK 5{\%} is nearly 26-fold and 2-fold higher than that of MFCs with Nafion 112 and Nafion 117 membranes respectively. The results suggest that the PES/SPEEK composite membrane is a promising alternative to the costly perfluorosulfonate membranes presently used as separators in MFC systems.",
keywords = "Electricity generation, Electrochemical impedance, Microbial fuel cell, Sulfonated poly(ether ether ketone)/poly(ether sulfone) membrane, Water crossover",
author = "Lim, {Swee Su} and {Wan Daud}, {Wan Ramli} and {Md Jahim}, Jamaliah and Mostafa Ghasemi and Chong, {Poh She} and Manal Ismail",
year = "2012",
month = "8",
doi = "10.1016/j.ijhydene.2012.04.155",
language = "English",
volume = "37",
pages = "11409--11424",
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issn = "0360-3199",
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TY - JOUR

T1 - Sulfonated poly(ether ether ketone)/poly(ether sulfone) composite membranes as an alternative proton exchange membrane in microbial fuel cells

AU - Lim, Swee Su

AU - Wan Daud, Wan Ramli

AU - Md Jahim, Jamaliah

AU - Ghasemi, Mostafa

AU - Chong, Poh She

AU - Ismail, Manal

PY - 2012/8

Y1 - 2012/8

N2 - Custom-made proton exchange membranes (PEM) are synthesized by incorporating sulfonated poly(ether ether ketone) (SPEEK) in poly(ether sulfone) (PES) for electricity generation in microbial fuel cells (MFCs). The composite PES/SPEEK membranes at various composition of SPEEK are prepared by the phase inversion method. The membranes are characterized by measuring roughness, proton conductivity, oxygen diffusion, water crossover and electrochemical impedance. The conductivity of hydrophobic PES membrane increases when a small amount (3-5%) of hydrophilic SPEEK is added. The electrochemical impedance spectra shows that the conductivity and capacitance of PES/SPEEK composite membranes during MFC operation are reduced from 6.15 × 10-7 to 6.93 × 10-5 (3197 -162 ) and from 3.00 × 10-7 to 1.56 × 10-3 F, respectively when 5% of SPEEK added into PES membrane. The PES/SPEEK 5% membrane has the highest performance compared to other membranes with a maximum power density of 170 mW m-2 at the maximum current density of 340 mA m-2. However, the interfacial reaction between the membrane and the cathode with Pt catalyst indicates moderate reaction efficiency compared to other membranes. The COD removal efficiency of MFCs with composite membrane PES/SPEEK 5% is nearly 26-fold and 2-fold higher than that of MFCs with Nafion 112 and Nafion 117 membranes respectively. The results suggest that the PES/SPEEK composite membrane is a promising alternative to the costly perfluorosulfonate membranes presently used as separators in MFC systems.

AB - Custom-made proton exchange membranes (PEM) are synthesized by incorporating sulfonated poly(ether ether ketone) (SPEEK) in poly(ether sulfone) (PES) for electricity generation in microbial fuel cells (MFCs). The composite PES/SPEEK membranes at various composition of SPEEK are prepared by the phase inversion method. The membranes are characterized by measuring roughness, proton conductivity, oxygen diffusion, water crossover and electrochemical impedance. The conductivity of hydrophobic PES membrane increases when a small amount (3-5%) of hydrophilic SPEEK is added. The electrochemical impedance spectra shows that the conductivity and capacitance of PES/SPEEK composite membranes during MFC operation are reduced from 6.15 × 10-7 to 6.93 × 10-5 (3197 -162 ) and from 3.00 × 10-7 to 1.56 × 10-3 F, respectively when 5% of SPEEK added into PES membrane. The PES/SPEEK 5% membrane has the highest performance compared to other membranes with a maximum power density of 170 mW m-2 at the maximum current density of 340 mA m-2. However, the interfacial reaction between the membrane and the cathode with Pt catalyst indicates moderate reaction efficiency compared to other membranes. The COD removal efficiency of MFCs with composite membrane PES/SPEEK 5% is nearly 26-fold and 2-fold higher than that of MFCs with Nafion 112 and Nafion 117 membranes respectively. The results suggest that the PES/SPEEK composite membrane is a promising alternative to the costly perfluorosulfonate membranes presently used as separators in MFC systems.

KW - Electricity generation

KW - Electrochemical impedance

KW - Microbial fuel cell

KW - Sulfonated poly(ether ether ketone)/poly(ether sulfone) membrane

KW - Water crossover

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DO - 10.1016/j.ijhydene.2012.04.155

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JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

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