Suitable Conditions for the Use of Vanadium Nitride as an Electrode for Electrochemical Capacitor
Vanadium nitride has displayed many interesting characteristics for its use as a pseudocapacitive electrode in an electrochemical capacitor, such as good electronic conductivity, good thermal stability, high density and high specific capacitance. Thin films of VN were prepared by D.C. reactive magne...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
Electrochemical Society
2016
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| Materias: | |
| Acceso en línea: | http://eprints.uanl.mx/25846/1/154.pdf |
| _version_ | 1824420326627344384 |
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| author | Morel, Alban Borjon Piron, Yann Lucio Porto, Raúl Brousse, Thierry Bélanger, Daniel |
| author_facet | Morel, Alban Borjon Piron, Yann Lucio Porto, Raúl Brousse, Thierry Bélanger, Daniel |
| author_sort | Morel, Alban |
| collection | Repositorio Institucional |
| description | Vanadium nitride has displayed many interesting characteristics for its use as a pseudocapacitive electrode in an electrochemical capacitor, such as good electronic conductivity, good thermal stability, high density and high specific capacitance. Thin films of VN were prepared by D.C. reactive magnetron sputtering. The electrochemical stability of the films as well as the influence of dissolved oxygen in 1MKOH electrolyte were investigated. In order to avoid material as well as electrolyte degradation, it was concluded that vanadium nitride should only be cycled between −0.4 and −1.0 V vs. Hg/HgO. After a 24 hours stabilization period, the prepared VN thin film showed an initial capacitance of 19 mF.cm−2 and a capacity retention of 96% after 10000 cycles. Furthermore, dissolved oxygen in the electrolyte was demonstrated to cause self-discharge up to a potential above −0.4 V vs. Hg/HgO, where VN was shown to be unstable. Additionally, the presence of oxygen was shown to shift the open circuit potential of a VN electrode to about 0 V through self-discharge processes. |
| format | Article |
| id | eprints-25846 |
| institution | UANL |
| language | English |
| publishDate | 2016 |
| publisher | Electrochemical Society |
| record_format | eprints |
| spelling | eprints-258462023-11-30T18:08:33Z http://eprints.uanl.mx/25846/ Suitable Conditions for the Use of Vanadium Nitride as an Electrode for Electrochemical Capacitor Morel, Alban Borjon Piron, Yann Lucio Porto, Raúl Brousse, Thierry Bélanger, Daniel QD Química Vanadium nitride has displayed many interesting characteristics for its use as a pseudocapacitive electrode in an electrochemical capacitor, such as good electronic conductivity, good thermal stability, high density and high specific capacitance. Thin films of VN were prepared by D.C. reactive magnetron sputtering. The electrochemical stability of the films as well as the influence of dissolved oxygen in 1MKOH electrolyte were investigated. In order to avoid material as well as electrolyte degradation, it was concluded that vanadium nitride should only be cycled between −0.4 and −1.0 V vs. Hg/HgO. After a 24 hours stabilization period, the prepared VN thin film showed an initial capacitance of 19 mF.cm−2 and a capacity retention of 96% after 10000 cycles. Furthermore, dissolved oxygen in the electrolyte was demonstrated to cause self-discharge up to a potential above −0.4 V vs. Hg/HgO, where VN was shown to be unstable. Additionally, the presence of oxygen was shown to shift the open circuit potential of a VN electrode to about 0 V through self-discharge processes. Electrochemical Society 2016-03 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/25846/1/154.pdf http://eprints.uanl.mx/25846/1.haspreviewThumbnailVersion/154.pdf Morel, Alban y Borjon Piron, Yann y Lucio Porto, Raúl y Brousse, Thierry y Bélanger, Daniel (2016) Suitable Conditions for the Use of Vanadium Nitride as an Electrode for Electrochemical Capacitor. Journal of The Electrochemical Society, 163 (6). pp. 1077-1082. ISSN 0013-4651 |
| spellingShingle | QD Química Morel, Alban Borjon Piron, Yann Lucio Porto, Raúl Brousse, Thierry Bélanger, Daniel Suitable Conditions for the Use of Vanadium Nitride as an Electrode for Electrochemical Capacitor |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Suitable Conditions for the Use of Vanadium Nitride as an
Electrode for Electrochemical Capacitor |
| title_full | Suitable Conditions for the Use of Vanadium Nitride as an
Electrode for Electrochemical Capacitor |
| title_fullStr | Suitable Conditions for the Use of Vanadium Nitride as an
Electrode for Electrochemical Capacitor |
| title_full_unstemmed | Suitable Conditions for the Use of Vanadium Nitride as an
Electrode for Electrochemical Capacitor |
| title_short | Suitable Conditions for the Use of Vanadium Nitride as an
Electrode for Electrochemical Capacitor |
| title_sort | suitable conditions for the use of vanadium nitride as an electrode for electrochemical capacitor |
| topic | QD Química |
| url | http://eprints.uanl.mx/25846/1/154.pdf |
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