Synergistically optimizing the electrocatalytic performance of IrO with double doping and bi-directional strains for acidic oxygen evolution reaction
Catalysis Science and Technology, ISSN: 2044-4761, Vol: 14, Issue: 16, Page: 4599-4607
2024
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
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Article Description
Because of the strong acidic environment and oxidative conditions, realizing highly active and stable iridium (Ir)-based electrocatalysts toward oxygen evolution reaction (OER) in a proton exchange membrane (PEM) electrolyzer is still a big challenge to overcome. To solve this problem, a novel core-shell structured TmSbIrO@TB-IrO nanocatalyst with bi-directional (shear and axial) strains was fabricated. It only needs a low overpotential of 192 mV (10 mA cm) for OER in acidic electrolytes with impressive stability, exceeding most recently reported Ir-based electrocatalysts. Moreover, TmSbIrO@TB-IrO exhibits an exceptionally high mass activity of 3.36 A mg (η = 270 mV). The enhanced catalytic activity resulted from the introduction of Tm, causing the Ir 5d band center (ϵ) to be closer to the Fermi level, which was demonstrated by theoretical calculations and microscopy characterizations. Additionally, a PEM electrolyzer adopting a TmSbIrO@TB-IrO nanocatalyst indicates efficiency stability for a span of 500 hours and a cell voltage of 2.01 V to achieve 2 A cm
Bibliographic Details
Royal Society of Chemistry (RSC)
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