Bonechi, Marco, Cappanni, Carlotta, Gentilesca, Pietro et al. (8 more authors) (2025) From waste to fuel cells. In situ preparation of an atomically precise Pd(II)-catalyst by selective extraction of Pd(II) from a mixture of metal ions using modified multi walled carbon nanotubes (MWCNTs) and its implementation in the oxygen reduction reaction (ORR) in alkaline solution. Journal of Power Sources. 236661. ISSN 0378-7753
Abstract
Fuel cells can effectively mitigate environmental challenges by enabling clean energy production. A significant obstacle to the implementation of fuel cells is the need for catalysts that make the electrode reactions efficient, especially the oxygen reduction reaction (ORR), allowing to replace the currently used bulk platinum electrodes which are efficient but very expensive. In this paper, we demonstrate that an atomically precise and very efficient Pd(II)-based catalyst for ORR can be easily prepared under environmentally friendly conditions using non-covalently modified multi-walled carbon nanotubes (MWCNT-L) to selectively recover precious Pd(II) from wastewater. Electrodes loaded with the new MWCNT-LPd catalyst, which contains only 1.94 % of Pd(II), give rise to ORR with 90 % H2O production (4 e− process), onset potential of 0.846 V (vs RHE) and half-wave potential (E1/2) of 0.657 V, very close to the performance of bulk platinum electrodes. Sustainable energy production and waste management are combined here within the framework of a circular economy criterion that places emphasis on environment protection.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2025 The Authors. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 21 May 2025 11:00 |
Last Modified: | 30 May 2025 03:00 |
Published Version: | https://doi.org/10.1016/j.jpowsour.2025.236661 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.jpowsour.2025.236661 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:226953 |
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Description: From waste to fuel cells. In situ preparation of an atomically precise Pd (II)-catalyst by selective extraction of Pd(II) from a mixture of metal ions using modified multi walled carbon nanotubes (MWCNTs) and its implementation in the oxygen reduction rea
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