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Zarrabeitia M, Gomes Chagas L, Kuenzel M, Gonzalo E, Rojo T, Passerini S, Muñoz-Márquez MÁ. Toward Stable Electrode/Electrolyte Interface of P2-Layered Oxide for Rechargeable Na-Ion Batteries. ACS Appl Mater Interfaces 2019; 11:28885-28893. [PMID: 31318528 DOI: 10.1021/acsami.9b07963] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The electrochemical properties of P2-Na2/3Mn0.8Fe0.1Ti0.1O2 layered oxide, which is a promising cathode material for rechargeable Na-ion batteries (NIBs), are evaluated with an optimized in-house ionic liquid (IL)-based electrolyte, and its performance is compared with that using carbonate-based electrolyte. The IL-based system reveals better electrochemical performance at room temperature than the carbonate electrolyte-based one at 0.1C and 1C, especially in terms of cycling stability, with a 97% capacity retention after 100 deep cycles (0.1C). The electrode/electrolyte interface is thoroughly studied in both systems by means of X-ray photoelectron spectroscopy and scanning electron microscopy so as proof that the formed interface is crucial to optimizing the electrochemical performance of NIBs. The carbonate-based system shows a thin, inhomogeneous, and unstable interface layer, while the IL-based one exhibits an even thinner but homogeneous and more stable interface, which may result in safer and longer-lasting NIBs.
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Affiliation(s)
- Maider Zarrabeitia
- CIC Energigune , Parque Tecnológico de Álava , Albert Einstein 48 , 01510 Miñano , Spain
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , 89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, 76021 Karlsruhe , Germany
| | - Luciana Gomes Chagas
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , 89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, 76021 Karlsruhe , Germany
| | - Matthias Kuenzel
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , 89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, 76021 Karlsruhe , Germany
| | - Elena Gonzalo
- CIC Energigune , Parque Tecnológico de Álava , Albert Einstein 48 , 01510 Miñano , Spain
| | - Teófilo Rojo
- CIC Energigune , Parque Tecnológico de Álava , Albert Einstein 48 , 01510 Miñano , Spain
- Departamento de Química Inorgánica , Universidad del País Vasco UPV/EHU , P.O. Box 664, 48080 Leioa , Spain
| | - Stefano Passerini
- Helmholtz Institute Ulm (HIU) , Helmholtzstrasse 11 , 89081 Ulm , Germany
- Karlsruhe Institute of Technology (KIT) , P.O. Box 3640, 76021 Karlsruhe , Germany
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