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Title
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Enhancing the stability of Sn-based electrocatalysts for the electrochemical CO2 reduction towards formate
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Author
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Abstract
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| Since the start of the second industrial revolution in the late 19th century, a rapid increase in anthropogenic CO2 emissions and land-use changes have been supercharging the natural greenhouse effect, making CO2 Earth’s most harmful and prevalent greenhouse gas, bringing about global warming, disrupted weather patterns and an acidification of the oceans. The electrochemical CO2 reduction (eCO2R) into industrially valuable products has become one of the most promising technologies to valorise anthropogenic CO2 emission, while simultaneously providing a means of energy storage for intermittent renewable sources, such as wind-, solar- and hydro energy. According to most eCO2R literature and techno-economic assessments, the eCO2R towards formate/formic acid (FA) has the potential to generate the highest revenue per mole of consumed electrons. However, for this process to become industrially feasible, a low cost catalyst with excellent activity, selectivity and stability is required. While state-of-the-art literature reports a wide variety highly selective and active Sn-based electrocatalysts, their stability is currently inadequate for industrial application of the eCO2R towards formate/formic acid. Throughout this dissertation, several important insights were gained concerning the stability of Sn-based electrocatalysts. Moreover, several major morphological degradation pathways were diminished, utilising a particle confinement strategy, and the possibilities to further enhance Sn-based electrocatalyst stability, by decreasing in situ SnO2 reduction via pulsed potential eCO2R, were explored, paving the way for future research. |
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Language
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English
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Publication
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Antwerp
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University of Antwerp, Faculty of Applied Engineering
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2023
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Volume/pages
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XXIV, 212 p.
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Note
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Breugelmans, Tom [Supervisor]
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Pant, Deepak [Supervisor]
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Full text (open access)
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