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Journal article
Characterization of a Sulfonated Poly(Ionic Liquid) Block Copolymer as an Ionomer for Proton Exchange Membrane Fuel Cells using Rotating Disk Electrode
Journal of the Electrochemical Society, v 168(12), p124511
01 Dec 2021
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Ionic liquid (IL) additives to both traditional and advanced oxygen reduction reaction (ORR) electrocatalysts have yielded remarkable improvements in catalyst performance and durability. However, incorporating ILs or IL-modified catalysts into the electrodes of a proton exchange membrane fuel cell (PEMFC) membrane electrode assembly (MEA) has proven to be challenging. Sulfonated poly(ionic liquid) block copolymers (S-PILBCP) present an opportunity to incorporate IL functionality directly into the ionomer, orthogonal to protonic conductivity. Here, we use a rotating disc electrode (RDE) to characterize the interface between a S-PILBCP and Pt catalyst in comparison to Nafion. Catalyst thin films prepared with S-PILBCP show an 80% improvement in the ORR activity over those containing Nafion. Thin films of S-PILBCP also show a significantly reduced degree of poisoning sulfonate adsorption on a Pt(111) surface in comparison to Nafion. These half-cell results provide useful insights that help to highlight the source of the impact of the S-PILBCP on PEMFC MEA performance.
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Details
- Title
- Characterization of a Sulfonated Poly(Ionic Liquid) Block Copolymer as an Ionomer for Proton Exchange Membrane Fuel Cells using Rotating Disk Electrode
- Creators
- Ramchandra Gawas - Drexel UniversityRui Sun - Texas A&M University SystemYawei Li - Shanxi UniversityKenneth C. Neyerlin - National Renewable Energy LaboratoryYossef A. Elabd - Texas A&M University SystemMaureen Tang - Drexel UniversityJoshua Snyder - Drexel University
- Publication Details
- Journal of the Electrochemical Society, v 168(12), p124511
- Publisher
- Electrochemical Soc Inc
- Number of pages
- 7
- Grant note
- DE-EE0008434 / Department of Energy, Office of Energy Efficiency and Renewable Energy, Fuel Cell Technologies Office; United States Department of Energy (DOE) DE-AC36-08GO28308 / U.S. Department of Energy (DOE); United States Department of Energy (DOE) U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Fuel Cell Technologies Office (FCTO); United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000735167900001
- Scopus ID
- 2-s2.0-85122567217
- Other Identifier
- 991019168369504721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Electrochemistry
- Materials Science, Coatings & Films