Investigation of Al-doping effects on the NaFe0.5Mn0.5O2 cathode for Na-ion batteries

Yongho Kee; Nikolay Dimov; Simon Champet; Duncan H. Gregory; Shigeto Okada

doi:10.1007/s11581-016-1839-2

Investigation of Al-doping effects on the NaFe_0.5Mn_0.5O₂ cathode for Na-ion batteries

Yongho Kee, Nikolay Dimov, Simon Champet, Duncan H. Gregory, Shigeto Okada

Department of Advanced Device Materials

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

11 Citations (Scopus)

Abstract

P2-Na_2/3MO₂ materials have recently been investigated as promising high-capacity cathode hosts for Na-ion batteries. On the other hand, the Na-deficiency in these materials precludes a high energy density when coupled with Na-free anodes. As an alternative, O3-NaFeO₂ and its various derivatives such as NaFe_0.5Mn_0.5O₂ have been suggested and investigated. In this study, we dope Al in NaFe_0.5Mn_0.5O₂ and investigate Al-doping effects on the electrochemical properties of the Na⁺ host. The Al-doped compound shows almost the same conductivity and diffusivity as the pristine structure. However, Al-doping enhances O3-P3 phase transition.

Original language	English
Pages (from-to)	2245-2248
Number of pages	4
Journal	Ionics
Volume	22
Issue number	11
DOIs	https://doi.org/10.1007/s11581-016-1839-2
Publication status	Published - Nov 1 2016

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Materials Science(all)
Engineering(all)
Physics and Astronomy(all)

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title = "Investigation of Al-doping effects on the NaFe0.5Mn0.5O2 cathode for Na-ion batteries",

abstract = "P2-Na2/3MO2 materials have recently been investigated as promising high-capacity cathode hosts for Na-ion batteries. On the other hand, the Na-deficiency in these materials precludes a high energy density when coupled with Na-free anodes. As an alternative, O3-NaFeO2 and its various derivatives such as NaFe0.5Mn0.5O2 have been suggested and investigated. In this study, we dope Al in NaFe0.5Mn0.5O2 and investigate Al-doping effects on the electrochemical properties of the Na+ host. The Al-doped compound shows almost the same conductivity and diffusivity as the pristine structure. However, Al-doping enhances O3-P3 phase transition.",

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T1 - Investigation of Al-doping effects on the NaFe0.5Mn0.5O2 cathode for Na-ion batteries

AU - Kee, Yongho

AU - Dimov, Nikolay

AU - Champet, Simon

AU - Gregory, Duncan H.

AU - Okada, Shigeto

PY - 2016/11/1

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N2 - P2-Na2/3MO2 materials have recently been investigated as promising high-capacity cathode hosts for Na-ion batteries. On the other hand, the Na-deficiency in these materials precludes a high energy density when coupled with Na-free anodes. As an alternative, O3-NaFeO2 and its various derivatives such as NaFe0.5Mn0.5O2 have been suggested and investigated. In this study, we dope Al in NaFe0.5Mn0.5O2 and investigate Al-doping effects on the electrochemical properties of the Na+ host. The Al-doped compound shows almost the same conductivity and diffusivity as the pristine structure. However, Al-doping enhances O3-P3 phase transition.

AB - P2-Na2/3MO2 materials have recently been investigated as promising high-capacity cathode hosts for Na-ion batteries. On the other hand, the Na-deficiency in these materials precludes a high energy density when coupled with Na-free anodes. As an alternative, O3-NaFeO2 and its various derivatives such as NaFe0.5Mn0.5O2 have been suggested and investigated. In this study, we dope Al in NaFe0.5Mn0.5O2 and investigate Al-doping effects on the electrochemical properties of the Na+ host. The Al-doped compound shows almost the same conductivity and diffusivity as the pristine structure. However, Al-doping enhances O3-P3 phase transition.

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