Aluminum doping of the P2-type layered structure results in a Na-ion cathode material (Na0.6Ni0.22Al0.11Mn0.66O2) with excellent performance. The material, in fact, exhibits outstanding specific capacities, 250 mA h g-1 and 150 mA h g-1 at 0.1 and 5C rate, respectively, which have never been reported before. Herein, a deep investigation of both the electrochemical behavior and the structural and morphological properties upon cycling reveals the beneficial effect of aluminum and the importance of a suitable metal intermixing selection for the obtainment of high performance cathode materials.
Data di pubblicazione: | 2017 | |
Titolo: | Toward high energy density cathode materials for sodium-ion batteries: investigating the beneficial effect of aluminum doping on the P2-type structure | |
Autori: | Hasa, Ivana; Passerini, Stefano; Hassoun, Jusef | |
Rivista: | JOURNAL OF MATERIALS CHEMISTRY. A | |
Keywords: | Beneficial effects; Cath-ode materials; Electrochemical behaviors; High energy densities; Layered Structures; Sodium ion batteries; Specific capacities; Structural and morphological properties | |
Abstract in inglese: | Aluminum doping of the P2-type layered structure results in a Na-ion cathode material (Na0.6Ni0.22Al0.11Mn0.66O2) with excellent performance. The material, in fact, exhibits outstanding specific capacities, 250 mA h g-1 and 150 mA h g-1 at 0.1 and 5C rate, respectively, which have never been reported before. Herein, a deep investigation of both the electrochemical behavior and the structural and morphological properties upon cycling reveals the beneficial effect of aluminum and the importance of a suitable metal intermixing selection for the obtainment of high performance cathode materials. | |
Digital Object Identifier (DOI): | 10.1039/c6ta08667e | |
Handle: | http://hdl.handle.net/11392/2369560 | |
Appare nelle tipologie: | 03.1 Articolo su rivista |
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