Iron-oxalato framework with one-dimensional open channels for electrochemical sodium-ion intercalation

Xianfen Wang; Ryosuke Kurono; Shin Ichi Nishimura; Masashi Okubo; Atsuo Yamada

doi:10.1002/chem.201404929

Iron-oxalato framework with one-dimensional open channels for electrochemical sodium-ion intercalation

Xianfen Wang, Ryosuke Kurono, Shin Ichi Nishimura, Masashi Okubo, Atsuo Yamada^*

^*Corresponding author for this work

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

21 Citations (Scopus)

Abstract

Discovery of a new class of ion intercalation compounds is highly desirable due to its relevance to various electrochemical devices, such as batteries. Herein, we present a new iron-oxalato open framework, which showed reversible Na⁺ intercalation/extraction. The hydrothermally synthesized K₄Na₂[Fe(C₂O₄)₂]₃·2H₂O possesses one-dimensional open channels in the oxalato-bridged network, providing ion accessibility up to two Na⁺ per the formula unit. The detailed studies on the structural and electronic states revealed that the framework exhibited a solid solution state almost entirely during Na⁺ intercalation/extraction associated with the reversible redox of Fe. The present work demonstrates possibilities of the oxalato frameworks as tunable and robust ion intercalation electrode materials for various device applications.

Original language	English
Pages (from-to)	1096-1101
Number of pages	6
Journal	Chemistry - A European Journal
Volume	21
Issue number	3
DOIs	https://doi.org/10.1002/chem.201404929
Publication status	Published - 2015 Jan 12
Externally published	Yes

Keywords

Electrochemistry
Metal-organic frameworks
Mössbauer spectroscopy
Oxalates
Sodium-ion batteries

ASJC Scopus subject areas

Catalysis
Organic Chemistry

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10.1002/chem.201404929

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title = "Iron-oxalato framework with one-dimensional open channels for electrochemical sodium-ion intercalation",

abstract = "Discovery of a new class of ion intercalation compounds is highly desirable due to its relevance to various electrochemical devices, such as batteries. Herein, we present a new iron-oxalato open framework, which showed reversible Na+ intercalation/extraction. The hydrothermally synthesized K4Na2[Fe(C2O4)2]3·2H2O possesses one-dimensional open channels in the oxalato-bridged network, providing ion accessibility up to two Na+ per the formula unit. The detailed studies on the structural and electronic states revealed that the framework exhibited a solid solution state almost entirely during Na+ intercalation/extraction associated with the reversible redox of Fe. The present work demonstrates possibilities of the oxalato frameworks as tunable and robust ion intercalation electrode materials for various device applications.",

keywords = "Electrochemistry, Metal-organic frameworks, M{\"o}ssbauer spectroscopy, Oxalates, Sodium-ion batteries",

author = "Xianfen Wang and Ryosuke Kurono and Nishimura, {Shin Ichi} and Masashi Okubo and Atsuo Yamada",

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AU - Wang, Xianfen

AU - Kurono, Ryosuke

AU - Nishimura, Shin Ichi

AU - Okubo, Masashi

AU - Yamada, Atsuo

PY - 2015/1/12

Y1 - 2015/1/12

N2 - Discovery of a new class of ion intercalation compounds is highly desirable due to its relevance to various electrochemical devices, such as batteries. Herein, we present a new iron-oxalato open framework, which showed reversible Na+ intercalation/extraction. The hydrothermally synthesized K4Na2[Fe(C2O4)2]3·2H2O possesses one-dimensional open channels in the oxalato-bridged network, providing ion accessibility up to two Na+ per the formula unit. The detailed studies on the structural and electronic states revealed that the framework exhibited a solid solution state almost entirely during Na+ intercalation/extraction associated with the reversible redox of Fe. The present work demonstrates possibilities of the oxalato frameworks as tunable and robust ion intercalation electrode materials for various device applications.

AB - Discovery of a new class of ion intercalation compounds is highly desirable due to its relevance to various electrochemical devices, such as batteries. Herein, we present a new iron-oxalato open framework, which showed reversible Na+ intercalation/extraction. The hydrothermally synthesized K4Na2[Fe(C2O4)2]3·2H2O possesses one-dimensional open channels in the oxalato-bridged network, providing ion accessibility up to two Na+ per the formula unit. The detailed studies on the structural and electronic states revealed that the framework exhibited a solid solution state almost entirely during Na+ intercalation/extraction associated with the reversible redox of Fe. The present work demonstrates possibilities of the oxalato frameworks as tunable and robust ion intercalation electrode materials for various device applications.

KW - Electrochemistry

KW - Metal-organic frameworks

KW - Mössbauer spectroscopy

KW - Oxalates

KW - Sodium-ion batteries

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Iron-oxalato framework with one-dimensional open channels for electrochemical sodium-ion intercalation

Abstract

Keywords

ASJC Scopus subject areas

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