Greenwell, Francesca, Siritanaratkul, Bhavin 
ORCID: 0000-0003-0604-7670, Sharma, Preetam K, Yu, Eileen H and Cowan, Alexander J ORCID: 0000-0001-9032-3548
(2023)
Pulsed Electrolysis with a Nickel Molecular Catalyst Improves Selectivity for Carbon Dioxide Reduction
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 145 (28).
pp. 15078-15083.
ISSN 0002-7863, 1520-5126
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Abstract
Pulsed electrolysis can significantly improve carbon dioxide reduction on metal electrodes, but the effect of short (millisecond to seconds) voltage steps on molecular electrocatalysts is largely unstudied. In this work, we investigate the effect pulse electrolysis has on the selectivity and stability of the homogeneous electrocatalyst [Ni(cyclam)]2+ at a carbon electrode. By tuning the potential and pulse duration, we achieve a significant improvement in CO Faradaic efficiencies (85%) after 3 h, double that of the system under potentiostatic conditions. The improved activity is due to in situ catalyst regeneration from an intermediate that occurs as part of the catalyst’s degradation pathway. This study demonstrates the wider opportunity to apply pulsed electrolysis to molecular electrocatalysts to control activity and improve selectivity.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 40 Engineering, 4016 Materials Engineering, 34 Chemical Sciences, 7 Affordable and Clean Energy |
| Divisions: | Faculty of Science & Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 30 Jun 2023 13:46 |
| Last Modified: | 16 Jun 2026 08:51 |
| DOI: | 10.1021/jacs.3c04811 |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3171385 |
| Disclaimer: | The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate. |
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