Engineering built-in electric fields in oxygen-deficient MnO-CeO@Cs catalysts: enhanced performance and kinetics for the oxygen reduction reaction in aqueous/flexible zinc-air batteries
Green Chemistry, ISSN: 1463-9270, Vol: 26, Issue: 4, Page: 2011-2020
2024
- 5Citations
- 2Captures
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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.
Article Description
Deliberate engineering of built-in electric fields (BEFs) can facilitate electron transfer and promote asymmetrical charge distribution, thereby regulating the adsorption/desorption of reaction intermediates. Herein, an oxygen-deficiency-rich MnO-CeO is synthetized supported on a carbon sphere (MnO-CeO@Cs), adeptly crafted with a prominent work function difference (ΔΦ) and robust BEF, targeting the electrocatalytic oxygen reduction reaction (ORR). Empirical and theoretical results substantiate that the BEF triggers interfacial charge redistribution, fine-tuning the adsorption energy of oxygen intermediates and hastening reaction kinetics. Consequently, the MnO-CeO@Cs showcases commendable performance (E = 0.80 V and j = 5.5 mA cm), outshining its single-component counterparts. Impressively, the MnO-CeO@Cs-based zinc-air batteries (ZABs) boast an exemplary power density of 202.7 mW cm and enduring stability of 297 h. Additionally, the solid-state ZAB commands a peak power density of 67.4 mW cm, underscoring its potential in flexible ZAB applications. This work delineates a strategic avenue to harness interfacial charge redistribution, aiming to enhance the catalytic performance and longevity of energy conversion/storage apparatuses.
Bibliographic Details
Royal Society of Chemistry (RSC)
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