Journal article
Nanoporous Iridium Nanosheets for Polymer Electrolyte Membrane Electrolysis
Advanced energy materials, v 11(34), pp 2101438-n/a
01 Sep 2021
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The growth of the hydrogen economy is predicated on advancements in electrochemical energy technologies, with water electrolysis as a key component to the technological portfolio. Much of the focus on anode catalyst development for polymer electrolyte membrane water electrolyzers (PEMWE) is centered on activity as controlled by compositional and morphological impacts on reactant/intermediate/product adsorption. However, the effectiveness of this strategy is found to be limited upon integration of these materials into PEMWE membrane electrode assemblies (MEA). Regardless of catalyst activity, the combination of electrode inhomogeneity, ionomer integration, and high density of oxide-oxide interfaces yields significant performance losses associated with poor catalytic electrode conductivity. Here many of these limitations are addressed through the development of a unique catalyst morphology composed of nanoporous Ir nanosheets (npIr(x)-NS) that exhibit high catalytic activity for the anodic oxygen evolution reaction and superior electrode electronic conductivity in comparison to a commercial IrO2 nanoparticle catalyst. The utility of the npIr(x)-NS is demonstrated through incorporation into PEMWE MEAs where their performance exceeds that of commercial catalyst coated membranes at loadings as low as 0.06 mg(Ir) cm(-2) while exhibiting a negligible loss in performance following 50 000 accelerated stress test cycles.
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Details
- Title
- Nanoporous Iridium Nanosheets for Polymer Electrolyte Membrane Electrolysis
- Creators
- Swarnendu Chatterjee - Drexel UniversityXiong Peng - Lawrence Berkeley National LaboratorySaad Intikhab - Drexel UniversityGuosong Zeng - Lawrence Berkeley National LaboratoryNancy N. Kariuki - Argonne National LaboratoryDeborah J. Myers - Argonne National LaboratoryNemanja Danilovic - Lawrence Berkeley National LaboratoryJoshua Snyder - Drexel University
- Publication Details
- Advanced energy materials, v 11(34), pp 2101438-n/a
- Publisher
- Wiley
- Number of pages
- 11
- Grant note
- DE-AC02-06CH11357 / U.S. Department of Energy, Office of Energy Efficiency, Hydrogen and Fuel Cell Technologies Office; United States Department of Energy (DOE) 1904571 / National Science Foundation Division of Materials Research; National Science Foundation (NSF) DE-AS02-06CH11357 / U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) DE-AC02-05CH11231 / Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy; United States Department of Energy (DOE) DE-AC02-05CH11231 / Department of Energy-Office of Energy Efficiency and Renewable Energy-Hydrogen and Fuel Cell Technologies Office (DOE-EERE-HFTO); United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000675292000001
- Scopus ID
- 2-s2.0-85110993124
- Other Identifier
- 991019168277404721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Energy & Fuels
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter