Development of fiber-type potassium-based cathode for sodium ion battery

Yi Hung Liu; Tomoaki Takasaki; Kazuya Nishimura; Masahiro Yanagida; Tetsuo Sakai

doi:10.1016/j.matlet.2016.04.160

Development of fiber-type potassium-based cathode for sodium ion battery

Yi Hung Liu, Tomoaki Takasaki, Kazuya Nishimura, Masahiro Yanagida, Tetsuo Sakai

Department of Chemical and Materials Engineering

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

3 Scopus citations

Abstract

A fiber-type potassium-based cathode material is developed for use in sodium ion battery without using any binder and conductive agents. This material is synthesized in a simple two-step process, including electrodeposition and hydrothermal reaction within a low temperature of 110 °C. This material exhibits its porous sponge-like morphology, in which the earth-abundant elements of K, Mn, and O are uniformly distributed. For its crystalline structure, the material is identified as K₂Mn₄O₈ with a crystalline size of ca. 230 nm, suggesting its good crystallinity. In the electrochemical characterization, two irreversible redox peaks are observed during the initial charge/discharge test against sodium metal, resulting in a discharge capacity of 122 mA h/g. This indicates that K₂Mn₄O₈ is capable of sodium-ion insertion, allowing the fiber-type potassium-based cathode to work for sodium ion battery.

Original language	English
Pages (from-to)	132-134
Number of pages	3
Journal	Materials Letters
Volume	177
DOIs	https://doi.org/10.1016/j.matlet.2016.04.160
State	Published - 15 Aug 2016

Keywords

Cathode material
Ceramics
Energy storage and conversion
Fiber technology
Potassium

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10.1016/j.matlet.2016.04.160

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title = "Development of fiber-type potassium-based cathode for sodium ion battery",

abstract = "A fiber-type potassium-based cathode material is developed for use in sodium ion battery without using any binder and conductive agents. This material is synthesized in a simple two-step process, including electrodeposition and hydrothermal reaction within a low temperature of 110 °C. This material exhibits its porous sponge-like morphology, in which the earth-abundant elements of K, Mn, and O are uniformly distributed. For its crystalline structure, the material is identified as K2Mn4O8 with a crystalline size of ca. 230 nm, suggesting its good crystallinity. In the electrochemical characterization, two irreversible redox peaks are observed during the initial charge/discharge test against sodium metal, resulting in a discharge capacity of 122 mA h/g. This indicates that K2Mn4O8 is capable of sodium-ion insertion, allowing the fiber-type potassium-based cathode to work for sodium ion battery.",

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AU - Liu, Yi Hung

AU - Takasaki, Tomoaki

AU - Nishimura, Kazuya

AU - Yanagida, Masahiro

AU - Sakai, Tetsuo

PY - 2016/8/15

Y1 - 2016/8/15

N2 - A fiber-type potassium-based cathode material is developed for use in sodium ion battery without using any binder and conductive agents. This material is synthesized in a simple two-step process, including electrodeposition and hydrothermal reaction within a low temperature of 110 °C. This material exhibits its porous sponge-like morphology, in which the earth-abundant elements of K, Mn, and O are uniformly distributed. For its crystalline structure, the material is identified as K2Mn4O8 with a crystalline size of ca. 230 nm, suggesting its good crystallinity. In the electrochemical characterization, two irreversible redox peaks are observed during the initial charge/discharge test against sodium metal, resulting in a discharge capacity of 122 mA h/g. This indicates that K2Mn4O8 is capable of sodium-ion insertion, allowing the fiber-type potassium-based cathode to work for sodium ion battery.

AB - A fiber-type potassium-based cathode material is developed for use in sodium ion battery without using any binder and conductive agents. This material is synthesized in a simple two-step process, including electrodeposition and hydrothermal reaction within a low temperature of 110 °C. This material exhibits its porous sponge-like morphology, in which the earth-abundant elements of K, Mn, and O are uniformly distributed. For its crystalline structure, the material is identified as K2Mn4O8 with a crystalline size of ca. 230 nm, suggesting its good crystallinity. In the electrochemical characterization, two irreversible redox peaks are observed during the initial charge/discharge test against sodium metal, resulting in a discharge capacity of 122 mA h/g. This indicates that K2Mn4O8 is capable of sodium-ion insertion, allowing the fiber-type potassium-based cathode to work for sodium ion battery.

KW - Cathode material

KW - Ceramics

KW - Energy storage and conversion

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Development of fiber-type potassium-based cathode for sodium ion battery

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Keywords

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