Efficient Electrocatalyst Nanoparticles from Upcycled Class II Capacitors
To move away from fossil fuels, the electrochemical reaction plays a critical role in renewable energy sources and devices. The anodic oxygen evolution reaction (OER) is always coupled with these reactions in devices but suffers from large energy barriers. Thus, it is important for developing effici...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/15/2697 |
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| author | Junhua Xu Daobin Liu Carmen Lee Pierre Feydi Marlene Chapuis Jing Yu Emmanuel Billy Qingyu Yan Jean-Christophe P. Gabriel |
| author_facet | Junhua Xu Daobin Liu Carmen Lee Pierre Feydi Marlene Chapuis Jing Yu Emmanuel Billy Qingyu Yan Jean-Christophe P. Gabriel |
| author_sort | Junhua Xu |
| collection | DOAJ |
| description | To move away from fossil fuels, the electrochemical reaction plays a critical role in renewable energy sources and devices. The anodic oxygen evolution reaction (OER) is always coupled with these reactions in devices but suffers from large energy barriers. Thus, it is important for developing efficient OER catalysts with low overpotential. On the other hand, there are large amounts of metals in electronic waste (E-waste), especially various transition metals that are promising alternatives for catalyzing OER. Hence, this work, which focuses on upcycling Class II BaTiO<sub>3</sub> Multilayer Ceramic Capacitors, of which two trillion were produced in 2011 alone. We achieved this by first using a green solvent extraction method that combined the ionic liquid Aliquat<sup>®</sup> 336 and hydrochloride acid to recover a mixed solution of Ni, Fe and Cu cations, and then using such a solution to synthesize high potential catalysts NiFe hydroxide and NiCu hydroxide for OER. NiFe-hydroxide has been demonstrated to have faster OER kinetics than the NiCu-hydroxide and commercial c-RuO<sub>2</sub>. In addition, it showed promising results after the chronopotentiometry tests that outperform c-RuO<sub>2</sub>. |
| first_indexed | 2024-03-09T10:06:53Z |
| format | Article |
| id | doaj.art-d8d81eea088949d4abf0dba7fa764dfb |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T10:06:53Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-d8d81eea088949d4abf0dba7fa764dfb2023-12-01T23:04:44ZengMDPI AGNanomaterials2079-49912022-08-011215269710.3390/nano12152697Efficient Electrocatalyst Nanoparticles from Upcycled Class II CapacitorsJunhua Xu0Daobin Liu1Carmen Lee2Pierre Feydi3Marlene Chapuis4Jing Yu5Emmanuel Billy6Qingyu Yan7Jean-Christophe P. Gabriel8SCARCE Laboratory, Energy Research Institute @ NTU (ERI@N), Nanyang Technology University, Singapore 637553, SingaporeSCARCE Laboratory, Energy Research Institute @ NTU (ERI@N), Nanyang Technology University, Singapore 637553, SingaporeSCARCE Laboratory, Energy Research Institute @ NTU (ERI@N), Nanyang Technology University, Singapore 637553, SingaporeLITEN, Université Grenoble Alpes, CEA, 38054 Grenoble, FranceLITEN, Université Grenoble Alpes, CEA, 38054 Grenoble, FranceSCARCE Laboratory, Energy Research Institute @ NTU (ERI@N), Nanyang Technology University, Singapore 637553, SingaporeLITEN, Université Grenoble Alpes, CEA, 38054 Grenoble, FranceSCARCE Laboratory, Energy Research Institute @ NTU (ERI@N), Nanyang Technology University, Singapore 637553, SingaporeSCARCE Laboratory, Energy Research Institute @ NTU (ERI@N), Nanyang Technology University, Singapore 637553, SingaporeTo move away from fossil fuels, the electrochemical reaction plays a critical role in renewable energy sources and devices. The anodic oxygen evolution reaction (OER) is always coupled with these reactions in devices but suffers from large energy barriers. Thus, it is important for developing efficient OER catalysts with low overpotential. On the other hand, there are large amounts of metals in electronic waste (E-waste), especially various transition metals that are promising alternatives for catalyzing OER. Hence, this work, which focuses on upcycling Class II BaTiO<sub>3</sub> Multilayer Ceramic Capacitors, of which two trillion were produced in 2011 alone. We achieved this by first using a green solvent extraction method that combined the ionic liquid Aliquat<sup>®</sup> 336 and hydrochloride acid to recover a mixed solution of Ni, Fe and Cu cations, and then using such a solution to synthesize high potential catalysts NiFe hydroxide and NiCu hydroxide for OER. NiFe-hydroxide has been demonstrated to have faster OER kinetics than the NiCu-hydroxide and commercial c-RuO<sub>2</sub>. In addition, it showed promising results after the chronopotentiometry tests that outperform c-RuO<sub>2</sub>.https://www.mdpi.com/2079-4991/12/15/2697electrocatalysisnickelelectronic wastelayered double hydroxiderecyclingcircular economy |
| spellingShingle | Junhua Xu Daobin Liu Carmen Lee Pierre Feydi Marlene Chapuis Jing Yu Emmanuel Billy Qingyu Yan Jean-Christophe P. Gabriel Efficient Electrocatalyst Nanoparticles from Upcycled Class II Capacitors Nanomaterials electrocatalysis nickel electronic waste layered double hydroxide recycling circular economy |
| title | Efficient Electrocatalyst Nanoparticles from Upcycled Class II Capacitors |
| title_full | Efficient Electrocatalyst Nanoparticles from Upcycled Class II Capacitors |
| title_fullStr | Efficient Electrocatalyst Nanoparticles from Upcycled Class II Capacitors |
| title_full_unstemmed | Efficient Electrocatalyst Nanoparticles from Upcycled Class II Capacitors |
| title_short | Efficient Electrocatalyst Nanoparticles from Upcycled Class II Capacitors |
| title_sort | efficient electrocatalyst nanoparticles from upcycled class ii capacitors |
| topic | electrocatalysis nickel electronic waste layered double hydroxide recycling circular economy |
| url | https://www.mdpi.com/2079-4991/12/15/2697 |
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