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Olchowka J, Fang R, Bianchini Nuernberg R, Pablos C, Carlier D, Cassaignon S, Croguennec L. Particle nanosizing and coating with an ionic liquid: two routes to improve the transport properties of Na 3V 2(PO 4) 2FO 2. NANOSCALE 2022; 14:8663-8676. [PMID: 35670554 DOI: 10.1039/d2nr01080a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Na3V2(PO4)2FO2 is a promising candidate for practical use as a positive electrode material in Na-ion batteries thanks to its high voltage and excellent structural stability upon cycling. However, its limited intrinsic transport properties limit its performance at fast charge/discharge rates. In this work, two efficient approaches are presented to optimize the electrical conductivity of the electrode material: particle nanosizing and particle coating with an ionic liquid (IL). The former reveals that particle downsizing from micrometer to nanometer range improves the electronic conductivity by more than two orders of magnitude, which greatly improves the rate capability without affecting the capacity retention. The second approch dealing with an original surface modification by applying an IL coating strongly enhances the ionic mobility and offers new perspectives to improve the energy storage performance by designing the electrode materials' surface composition.
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Affiliation(s)
- Jacob Olchowka
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France.
- RS2E, Réseau Français sur le Stockage Electrochimique de l'Energie, CNRS 3459, 80039 Amiens Cedex 1, France
- ALISTORE-ERI European Research Institute, CNRS 3104, 80039 Amiens Cedex 1, France
| | - Runhe Fang
- RS2E, Réseau Français sur le Stockage Electrochimique de l'Energie, CNRS 3459, 80039 Amiens Cedex 1, France
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris, LCMCP, UMR 7574, 4 Place Jussieu, 75005 Paris, France
| | | | - Chloé Pablos
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France.
- RS2E, Réseau Français sur le Stockage Electrochimique de l'Energie, CNRS 3459, 80039 Amiens Cedex 1, France
- Laboratoire de Réactivité et de Chimie des Solides, Université de Picardie Jules Verne, CNRS-UMR 7314, F-80039 Amiens Cedex 1, France
| | - Dany Carlier
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France.
- RS2E, Réseau Français sur le Stockage Electrochimique de l'Energie, CNRS 3459, 80039 Amiens Cedex 1, France
- ALISTORE-ERI European Research Institute, CNRS 3104, 80039 Amiens Cedex 1, France
| | - Sophie Cassaignon
- RS2E, Réseau Français sur le Stockage Electrochimique de l'Energie, CNRS 3459, 80039 Amiens Cedex 1, France
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris, LCMCP, UMR 7574, 4 Place Jussieu, 75005 Paris, France
| | - Laurence Croguennec
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France.
- RS2E, Réseau Français sur le Stockage Electrochimique de l'Energie, CNRS 3459, 80039 Amiens Cedex 1, France
- ALISTORE-ERI European Research Institute, CNRS 3104, 80039 Amiens Cedex 1, France
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