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Effect of the anionic counterpart - Molybdate vs. tungstate in energy storage for pseudo-capacitor applications.pdf
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Journal article
Effect of the anionic counterpart: Molybdate vs. tungstate in energy storage for pseudo-capacitor applications
Nanomaterials, Vol.11(3), Article 580
2021
Abstract
Nickel-based bimetallic oxides (BMOs) have shown significant potential in battery-type electrodes for pseudo-capacitors given their ability to facilitate redox reactions. In this work, two bimetallic oxides, NiMoO4 and NiWO4, were synthesized using a wet chemical route. The structure and electrochemical properties of the pseudo-capacitor cathode materials were characterized. NiMoO4 showed superior charge storage performance in comparison to NiWO4, exhibiting a discharge capacitance of 124 and 77 F·g−1, respectively. NiMoO4, moreover, demonstrates better capacity retention after 1000 cycles with 87.14% compared to 82.22% for NiWO4. The lower electrochemical performance of the latter was identified to result from the redox behavior during cycling. NiWO4 reacts in the alkaline solution and forms a passivation layer composed of WO3 on the electrode, while in contrast, the redox behavior of NiMoO4 is fully reversible.
Details
- Title
- Effect of the anionic counterpart: Molybdate vs. tungstate in energy storage for pseudo-capacitor applications
- Authors/Creators
- P. Sharma (Author/Creator) - Murdoch UniversityM. Minakshi (Author/Creator) - Murdoch UniversityJ. Whale (Author/Creator) - Murdoch UniversityA. Jean-Fulcrand (Author/Creator) - Technische Universität BraunschweigG. Garnweitner (Author/Creator) - Technische Universität Braunschweig
- Publication Details
- Nanomaterials, Vol.11(3), Article 580
- Publisher
- MDPI
- Identifiers
- 991005540471807891
- Copyright
- © 2021 by the authors
- Murdoch Affiliation
- School of Engineering and Energy
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 2 Chemistry
- 2.62 Electrochemistry
- 2.62.52 Electrode Materials
- Web Of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- ESI research areas
- Materials Science