Anomalous Sodium Storage Behavior in Al/F Dual-Doped P2-Type Sodium Manganese Oxide Cathode for Sodium-Ion Batteries

Munseok S. Chae; Hyojeong J. Kim; Jeyne Lyoo; Ran Attias; Yosef Gofer; Seung Tae Hong; Doron Aurbach

doi:10.1002/aenm.202002205

Anomalous Sodium Storage Behavior in Al/F Dual-Doped P2-Type Sodium Manganese Oxide Cathode for Sodium-Ion Batteries

Munseok S. Chae
, Hyojeong J. Kim
, Jeyne Lyoo
, Ran Attias
, Yosef Gofer
, Seung Tae Hong
, Doron Aurbach

Daegu Gyeongbuk Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

87 Scopus citations

Abstract

Various types of sodium manganese oxides are promising cathode materials for sodium storage systems. One of the most considerable advantages of this family of materials is their widespread natural abundance. So far, only a few host candidates have been reported and there is a need to develop new materials with improved practical electrochemical performance. Here, P2-type Al/F-doped sodium manganese oxide as well as its unique sodium storage mechanism is demonstrated by a combination of electrochemical characterization, structural analyses from powder X-ray diffraction (XRD) data, and 3D bond valence energy level calculations for the sodium diffusion pathways. The material exhibits a high reversible capacity of 164.3 mAh g⁻¹ (0.3C rate) and capacity retention of 89.1% after 500 cycles (5C rate). The study clearly unravels the beneficial effect of the doping and the unique sodium intercalation mechanism devoid of the low diffusion O3 transformation.

Original language	English
Article number	2002205
Journal	Advanced Energy Materials
Volume	10
Issue number	43
DOIs	https://doi.org/10.1002/aenm.202002205
State	Published - 17 Nov 2020

Bibliographical note

Publisher Copyright:
© 2020 Wiley-VCH GmbH

Funding

M.S.C. and H.J.K. contributed equally to this work. This work was partially supported by the Ministry of Energy and by the Ministry of Science and Technology of Israel.

Funders
Ministry of Energy
Ministry of science and technology, Israel

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

P2-type layered oxide
aluminum/fluorine doping
sodium intercalation
sodium manganese oxide
sodium-ion batteries

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10.1002/aenm.202002205

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title = "Anomalous Sodium Storage Behavior in Al/F Dual-Doped P2-Type Sodium Manganese Oxide Cathode for Sodium-Ion Batteries",

abstract = "Various types of sodium manganese oxides are promising cathode materials for sodium storage systems. One of the most considerable advantages of this family of materials is their widespread natural abundance. So far, only a few host candidates have been reported and there is a need to develop new materials with improved practical electrochemical performance. Here, P2-type Al/F-doped sodium manganese oxide as well as its unique sodium storage mechanism is demonstrated by a combination of electrochemical characterization, structural analyses from powder X-ray diffraction (XRD) data, and 3D bond valence energy level calculations for the sodium diffusion pathways. The material exhibits a high reversible capacity of 164.3 mAh g−1 (0.3C rate) and capacity retention of 89.1\% after 500 cycles (5C rate). The study clearly unravels the beneficial effect of the doping and the unique sodium intercalation mechanism devoid of the low diffusion O3 transformation.",

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AU - Lyoo, Jeyne

AU - Attias, Ran

AU - Gofer, Yosef

AU - Hong, Seung Tae

AU - Aurbach, Doron

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AB - Various types of sodium manganese oxides are promising cathode materials for sodium storage systems. One of the most considerable advantages of this family of materials is their widespread natural abundance. So far, only a few host candidates have been reported and there is a need to develop new materials with improved practical electrochemical performance. Here, P2-type Al/F-doped sodium manganese oxide as well as its unique sodium storage mechanism is demonstrated by a combination of electrochemical characterization, structural analyses from powder X-ray diffraction (XRD) data, and 3D bond valence energy level calculations for the sodium diffusion pathways. The material exhibits a high reversible capacity of 164.3 mAh g−1 (0.3C rate) and capacity retention of 89.1% after 500 cycles (5C rate). The study clearly unravels the beneficial effect of the doping and the unique sodium intercalation mechanism devoid of the low diffusion O3 transformation.

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Anomalous Sodium Storage Behavior in Al/F Dual-Doped P2-Type Sodium Manganese Oxide Cathode for Sodium-Ion Batteries

Abstract

Bibliographical note

Funding

UN SDGs

Keywords

Access to Document

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