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Membrane crystallinity and fuel crossover in direct ethanol fuel cells with Nafion composite membranes containing phosphotungstic acid

Journal Article · · Journal of Materials Science
 [1];  [2];  [1];  [1];  [1];  [1];  [3];  [4];  [1]
  1. Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Dept. of Materials Science and Engineering
  2. Baylor Univ., Waco, TX (United States). Dept. of Mechanical Engineering
  3. Nelson Mandela African Inst. of Science and Technology, Arusha (Tanzania)
  4. Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Dept. of Materials Science and Engineering; Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Interest has been growing in direct ethanol fuel cells (DEFCs) due to their non-toxicity, low cost and potential contribution to energy issues in third world countries. A reduction in fuel cross-over is of key importance to enhance the performance of DEFCs that operate at low temperatures (<100 °C). We report on the effect of the addition of phosphotungstic acid (PWA) in Nafion membrane on the ethanol-crossover for DEFC application. A set of PWANafion composite membranes (PWA 0, 5, 10, 15, 20 wt%) was prepared by solution casting and their microstructures, diffraction patterns and permeability were systematically characterized. The significant reduction in ethanol-crossover was observed with increasing PWA concentration in PWA-Nafion membranes, which was mainly attributed to an improvement in crystallinity of the membrane. PWA provides additional nucleation sites during solidification leading to higher crystallinity, which is supported by the membrane permeability tests. These PWA-Nafion composites were implemented in proto-type DEFC devices as a membrane and the maximum power density achieved was 22% higher than that of commercial Nafion-117 device.
Research Organization:
Argonne National Laboratory (ANL)
Sponsoring Organization:
National Research Foundation (NRF) of Korea; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1340207
Alternate ID(s):
OSTI ID: 1429873
Journal Information:
Journal of Materials Science, Journal Name: Journal of Materials Science Journal Issue: 5 Vol. 52; ISSN 0022-2461
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (38)

Core/Shell Pt/C Nanoparticles Embedded in Mesoporous Carbon as a Methanol-Tolerant Cathode Catalyst in Direct Methanol Fuel Cells journal February 2008
Copolymerization of Divinylsilyl-11-silicotungstic Acid with Butyl Acrylate and Hexanediol Diacrylate: Synthesis of a Highly Proton-Conductive Membrane for Fuel-Cell Applications journal March 2009
Phosphotungstic Acid Supported on a Nanopowdered ZrO 2 as a Filler in Nafion‐Based Membranes for Polymer Electrolyte Fuel Cells journal July 2008
Synthesis and Ex-situ Characterization of Nafion/TiO 2 Composite Membranes for Direct Ethanol Fuel Cell journal February 2009
Thermally induced phase transformations of 12-tungstophosphoric acid 29-hydrate: synthesis and characterization of PW8O26-type bronzes journal July 1994
PWA/silica/PFSA composite membrane for direct methanol fuel cells journal August 2009
The impact of anode design on fuel crossover of direct ethanol fuel cell journal January 2016
Investigation of a direct methanol fuel cell based on a composite Nafion®-silica electrolyte for high temperature operation journal October 1999
Pt based anode catalysts for direct ethanol fuel cells journal November 2003
Direct ethanol fuel cells for transport and stationary applications – A comprehensive review journal May 2015
Membranes for direct ethanol fuel cells: An overview journal February 2016
Stabilized heteropolyacid/Nafion® composite membranes for elevated temperature/low relative humidity PEFC operation journal January 2005
Low methanol permeable composite Nafion/silica/PWA membranes for low temperature direct methanol fuel cells journal May 2005
Effect of filler surface functionalization on the performance of Nafion/Titanium oxide composite membranes journal November 2014
Periodic Nafion-silica-heteropolyacids electrolyte t for PEM fuel cell operated near 200 °C journal March 2012
Improvement on direct ethanol fuel cell performance by using doped-Nafion® 117 membranes with Pt and Pt–Ru nanoparticles journal September 2013
Direct ethanol fuel cell (DEFC): Electrical performances and reaction products distribution under operating conditions with different platinum-based anodes journal July 2006
Modified SPEEK membranes for direct ethanol fuel cell journal July 2010
Preparation and characterization of phosphotungstic acid-derived salt/Nafion nanocomposite membranes for proton exchange membrane fuel cells journal February 2011
Review and advances of direct methanol fuel cells (DMFCs) part I: Design, fabrication, and testing with high concentration methanol solutions journal March 2013
Development of a polymer electrolyte membrane fuel cell stack for an underwater vehicle journal February 2016
Enhancement of fuel cell performance with less-water dependent composite membranes having polyoxometalate anchored nanofibrous interlayer journal September 2016
Investigation of Nafion®/HPA composite membranes for high temperature/low relative humidity PEMFC operation journal March 2004
Nafion/silicon oxide/phosphotungstic acid nanocomposite membrane with enhanced proton conductivity journal February 2009
Phosphotungstic acid (HPW) molecules anchored in the bulk of Nafion as methanol-blocking membrane for direct methanol fuel cells journal February 2011
Cesium hydrogen salt of heteropolyacids/Nafion nanocomposite membranes for proton exchange membrane fuel cells journal July 2011
A novel phosphotungstic acid impregnated meso-Nafion multilayer membrane for proton exchange membrane fuel cells journal January 2013
Mixed matrix proton exchange membranes for fuel cells: State of the art and perspectives journal June 2016
An overview of fuel cell technology: Fundamentals and applications journal April 2014
Improved Methanol Barrier Property of Nafion Hybrid Membrane by Incorporating Nanofibrous Interlayer Self-Immobilized with High Level of Phosphotungstic Acid journal July 2015
Catalysis by Heteropoly Acids and Multicomponent Polyoxometalates in Liquid-Phase Reactions journal February 1998
Oxidation of Methanol on 2nd and 3rd Row Group VIII Transition Metals (Pt, Ir, Os, Pd, Rh, and Ru):  Application to Direct Methanol Fuel Cells journal December 1999
Fast Proton Conduction Facilitated by Minimum Water in a Series of Divinylsilyl-11-silicotungstic Acid- co -Butyl Acrylate- co -Hexanediol Diacrylate Polymers journal December 2013
Layer-by-layer self-assembly of PDDA/PWA–Nafion composite membranes for direct methanol fuel cells journal January 2010
Heterogeneous Catalysis by Heteropoly Compounds of Molybdenum and Tungsten journal June 1987
Water Uptake in Novel, Water-Stable, Heteropoly Acid Films journal September 2015
Membrane-Supported Nonvolatile Acidic Electrolytes Allow Higher Temperature Operation of Proton-Exchange Membrane Fuel Cells journal January 1997
Evaluation of Ethanol, 1-Propanol, and 2-Propanol in a Direct Oxidation Polymer-Electrolyte Fuel Cell journal January 1995

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Electrospinning preparation of a graphene oxide nanohybrid proton-exchange membrane for fuel cells journal March 2018
Mobility of Air-Stable p-type Polythiophene Field-Effect Transistors Fabricated Using Oxidative Chemical Vapor Deposition journal January 2020
Effects of membrane thickness on the performance of ionic polymer–metal composite actuators journal January 2019
Ionic polymer metal composites for use as an organic electrolyte supercapacitor journal April 2019

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