Investigating the Cycling Stability of Fe<sub>2</sub>WO<sub>6</sub> Pseudocapacitive Electrode Materials
The stability upon cycling of Fe<sub>2</sub>WO<sub>6</sub> used as a negative electrode material for electrochemical capacitors was investigated. The material was synthesized using low temperature conditions for the first time (220 °C). The electrochemical study of Fe<sub&...
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MDPI AG
2021-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/6/1405 |
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| author | Julio César Espinosa-Angeles Nicolas Goubard-Bretesché Eric Quarez Christophe Payen Moulay-Tahar Sougrati Olivier Crosnier Thierry Brousse |
| author_facet | Julio César Espinosa-Angeles Nicolas Goubard-Bretesché Eric Quarez Christophe Payen Moulay-Tahar Sougrati Olivier Crosnier Thierry Brousse |
| author_sort | Julio César Espinosa-Angeles |
| collection | DOAJ |
| description | The stability upon cycling of Fe<sub>2</sub>WO<sub>6</sub> used as a negative electrode material for electrochemical capacitors was investigated. The material was synthesized using low temperature conditions for the first time (220 °C). The electrochemical study of Fe<sub>2</sub>WO<sub>6</sub> in a 5 M LiNO<sub>3</sub> aqueous electrolyte led to a specific and volumetric capacitance of 38 F g<sup>−1</sup> and 240 F cm<sup>−3</sup> when cycled at 2 mV·s<sup>−1</sup>, respectively, associated with a minor capacitance loss after 10,000 cycles. In order to investigate this very good cycling stability, both surface and bulk characterization techniques (such as Transmission Electron Microscopy, Mössbauer spectroscopy, and magnetization measurements) were used. Only a slight disordering of the Fe<sup>3+</sup> cations was observed in the structure, explaining the good stability of the Fe<sub>2</sub>WO<sub>6</sub> upon cycling. This study adds another pseudocapacitive material to the short list of compounds that exhibit such a behavior up to now. |
| first_indexed | 2024-03-10T11:01:04Z |
| format | Article |
| id | doaj.art-00769541b8cf44c990281e2e12be080f |
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| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T11:01:04Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-00769541b8cf44c990281e2e12be080f2023-11-21T21:26:48ZengMDPI AGNanomaterials2079-49912021-05-01116140510.3390/nano11061405Investigating the Cycling Stability of Fe<sub>2</sub>WO<sub>6</sub> Pseudocapacitive Electrode MaterialsJulio César Espinosa-Angeles0Nicolas Goubard-Bretesché1Eric Quarez2Christophe Payen3Moulay-Tahar Sougrati4Olivier Crosnier5Thierry Brousse6Institut des Matériaux Jean Rouxel, Université de Nantes, CNRS, IMN, F-44000 Nantes, FranceInstitut des Matériaux Jean Rouxel, Université de Nantes, CNRS, IMN, F-44000 Nantes, FranceInstitut des Matériaux Jean Rouxel, Université de Nantes, CNRS, IMN, F-44000 Nantes, FranceInstitut des Matériaux Jean Rouxel, Université de Nantes, CNRS, IMN, F-44000 Nantes, FranceRéseau sur le Stockage Electrochimique de l’énergie (RS2E), FR CNRS 3459, CEDEX, 80039 Amiens, FranceInstitut des Matériaux Jean Rouxel, Université de Nantes, CNRS, IMN, F-44000 Nantes, FranceInstitut des Matériaux Jean Rouxel, Université de Nantes, CNRS, IMN, F-44000 Nantes, FranceThe stability upon cycling of Fe<sub>2</sub>WO<sub>6</sub> used as a negative electrode material for electrochemical capacitors was investigated. The material was synthesized using low temperature conditions for the first time (220 °C). The electrochemical study of Fe<sub>2</sub>WO<sub>6</sub> in a 5 M LiNO<sub>3</sub> aqueous electrolyte led to a specific and volumetric capacitance of 38 F g<sup>−1</sup> and 240 F cm<sup>−3</sup> when cycled at 2 mV·s<sup>−1</sup>, respectively, associated with a minor capacitance loss after 10,000 cycles. In order to investigate this very good cycling stability, both surface and bulk characterization techniques (such as Transmission Electron Microscopy, Mössbauer spectroscopy, and magnetization measurements) were used. Only a slight disordering of the Fe<sup>3+</sup> cations was observed in the structure, explaining the good stability of the Fe<sub>2</sub>WO<sub>6</sub> upon cycling. This study adds another pseudocapacitive material to the short list of compounds that exhibit such a behavior up to now.https://www.mdpi.com/2079-4991/11/6/1405Fe<sub>2</sub>WO<sub>6</sub>electrochemical capacitorpseudocapacitanceMössbauer spectroscopy |
| spellingShingle | Julio César Espinosa-Angeles Nicolas Goubard-Bretesché Eric Quarez Christophe Payen Moulay-Tahar Sougrati Olivier Crosnier Thierry Brousse Investigating the Cycling Stability of Fe<sub>2</sub>WO<sub>6</sub> Pseudocapacitive Electrode Materials Nanomaterials Fe<sub>2</sub>WO<sub>6</sub> electrochemical capacitor pseudocapacitance Mössbauer spectroscopy |
| title | Investigating the Cycling Stability of Fe<sub>2</sub>WO<sub>6</sub> Pseudocapacitive Electrode Materials |
| title_full | Investigating the Cycling Stability of Fe<sub>2</sub>WO<sub>6</sub> Pseudocapacitive Electrode Materials |
| title_fullStr | Investigating the Cycling Stability of Fe<sub>2</sub>WO<sub>6</sub> Pseudocapacitive Electrode Materials |
| title_full_unstemmed | Investigating the Cycling Stability of Fe<sub>2</sub>WO<sub>6</sub> Pseudocapacitive Electrode Materials |
| title_short | Investigating the Cycling Stability of Fe<sub>2</sub>WO<sub>6</sub> Pseudocapacitive Electrode Materials |
| title_sort | investigating the cycling stability of fe sub 2 sub wo sub 6 sub pseudocapacitive electrode materials |
| topic | Fe<sub>2</sub>WO<sub>6</sub> electrochemical capacitor pseudocapacitance Mössbauer spectroscopy |
| url | https://www.mdpi.com/2079-4991/11/6/1405 |
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