Volume 59, Issue 6 pp. 2449-2456
Research Article

Development and Investigation of a NASICON-Type High-Voltage Cathode Material for High-Power Sodium-Ion Batteries

Dr. Mingzhe Chen

Dr. Mingzhe Chen

Australian Institute for Innovative Materials, Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522 Australia

These authors contributed equally to this work.

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Dr. Weibo Hua

Dr. Weibo Hua

Institute for Applied Materials-Energy Storage Systems (IAM-ESS), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany

These authors contributed equally to this work.

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Dr. Jin Xiao

Dr. Jin Xiao

School of Science, Hunan University of Technology, Zhuzhou, 412007 P. R. China

State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083 P. R. China

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Dr. David Cortie

Dr. David Cortie

Australian Institute for Innovative Materials, Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522 Australia

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Prof. Xiaodong Guo

Prof. Xiaodong Guo

College of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Dr. Enhui Wang

Dr. Enhui Wang

Australian Institute for Innovative Materials, Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522 Australia

College of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Dr. Qinfen Gu

Dr. Qinfen Gu

Australian Synchrotron, 800 Blackburn Road, Clayton, VIC, 3168 Australia

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Dr. Zhe Hu

Dr. Zhe Hu

Australian Institute for Innovative Materials, Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522 Australia

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Prof. Sylvio Indris

Prof. Sylvio Indris

Institute for Applied Materials-Energy Storage Systems (IAM-ESS), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany

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Prof. Xiao-Lin Wang

Prof. Xiao-Lin Wang

Australian Institute for Innovative Materials, Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522 Australia

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Dr. Shu-Lei Chou

Corresponding Author

Dr. Shu-Lei Chou

Australian Institute for Innovative Materials, Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522 Australia

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Prof. Shi-Xue Dou

Prof. Shi-Xue Dou

Australian Institute for Innovative Materials, Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522 Australia

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First published: 27 October 2019
Citations: 126

Graphical Abstract

A new NASICON-type high-voltage cathode material of Na3V(PO3)3N was synthesized and its electrochemical performance was improved by carbon matrix decoration. An in-depth investigation of the material was performed through in situ XAS and XRD, and its 3D sodium pathways were clearly identified through DFT calculations.

Abstract

Herein, we introduce a 4.0 V class high-voltage cathode material with a newly recognized sodium superionic conductor (NASICON)-type structure with cubic symmetry (space group P213), Na3V(PO3)3N. We synthesize an N-doped graphene oxide-wrapped Na3V(PO3)3N composite with a uniform carbon coating layer, which shows excellent rate performance and outstanding cycling stability. Its air/water stability and all-climate performance were carefully investigated. A near-zero volume change (ca. 0.40 %) was observed for the first time based on in situ synchrotron X-ray diffraction, and the in situ X-ray absorption spectra revealed the V3.2+/V4.2+ redox reaction with high reversibility. Its 3D sodium diffusion pathways were demonstrated with distinctive low energy barriers. Our results indicate that this high-voltage NASICON-type Na3V(PO3)3N composite is a competitive cathode material for sodium-ion batteries and will receive more attention and studies in the future.

Conflict of interest

The authors declare no conflict of interest.

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