Metal-organic framework-derived CoSe2/(NiCo)Se2 box-in-box hollow nanocubes with enhanced electrochemical properties for sodium-ion storage and hydrogen evolution

Seung Keun Park; Jin Koo Kim; Yun Chan Kang

doi:10.1039/c7ta05571d

Metal-organic framework-derived CoSe₂/(NiCo)Se₂ box-in-box hollow nanocubes with enhanced electrochemical properties for sodium-ion storage and hydrogen evolution

Seung Keun Park, Jin Koo Kim, Yun Chan Kang

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

217 Citations (Scopus)

Abstract

Multishell structured metal selenide nanocubes, namely, Co/(NiCo)Se₂ box-in-box structures with different shell compositions, were successfully synthesized by applying zeolitic imidazolate framework-67 (ZIF-67) as a template. This strategy involved the fabrication of cube-shaped ZIF-67/Ni-Co layered double hydroxides with a yolk-shell structure and then transformation into Co/(NiCo)Se₂ with a box-in-box structure by a selenization process under Ar/H₂ conditions. During the selenization step, hollow structured CoSe₂ cores were generated by Ostwald ripening, resulting in the formation of Co/(NiCo)Se₂ with a box-in-box structure composed of an inner CoSe₂ shell and an outer (NiCo)Se₂ shell. Due to the synergetic effect of the unique structure and multicomponent selenide composition, the Co/(NiCo)Se₂ with the box-in-box structure offered excellent dual functionality as both an anode for sodium ion batteries (SIBs) and an electrocatalyst for the hydrogen evolution reaction (HER). Electrochemical tests on the Co/(NiCo)Se₂ with the box-in-box structure demonstrated a low Tafel slope (39.8 mV dec^-1) and excellent stability. In addition, it delivered a high specific capacity of 497 mA h g^-1 after 80 cycles, with a current density of 0.2 A g^-1 and excellent cycling stability as an anode material for SIBs.

Original language	English
Pages (from-to)	18823-18830
Number of pages	8
Journal	Journal of Materials Chemistry A
Volume	5
Issue number	35
DOIs	https://doi.org/10.1039/c7ta05571d
Publication status	Published - 2017

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2017R1A2B2008592). This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the granted nancial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20153030091450).

Publisher Copyright:
© 2017 The Royal Society of Chemistry.

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

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Access to Document

10.1039/c7ta05571d

Cite this

@article{b73e082acb9145e6a983f2ff02c4a555,

title = "Metal-organic framework-derived CoSe2/(NiCo)Se2 box-in-box hollow nanocubes with enhanced electrochemical properties for sodium-ion storage and hydrogen evolution",

abstract = "Multishell structured metal selenide nanocubes, namely, Co/(NiCo)Se2 box-in-box structures with different shell compositions, were successfully synthesized by applying zeolitic imidazolate framework-67 (ZIF-67) as a template. This strategy involved the fabrication of cube-shaped ZIF-67/Ni-Co layered double hydroxides with a yolk-shell structure and then transformation into Co/(NiCo)Se2 with a box-in-box structure by a selenization process under Ar/H2 conditions. During the selenization step, hollow structured CoSe2 cores were generated by Ostwald ripening, resulting in the formation of Co/(NiCo)Se2 with a box-in-box structure composed of an inner CoSe2 shell and an outer (NiCo)Se2 shell. Due to the synergetic effect of the unique structure and multicomponent selenide composition, the Co/(NiCo)Se2 with the box-in-box structure offered excellent dual functionality as both an anode for sodium ion batteries (SIBs) and an electrocatalyst for the hydrogen evolution reaction (HER). Electrochemical tests on the Co/(NiCo)Se2 with the box-in-box structure demonstrated a low Tafel slope (39.8 mV dec-1) and excellent stability. In addition, it delivered a high specific capacity of 497 mA h g-1 after 80 cycles, with a current density of 0.2 A g-1 and excellent cycling stability as an anode material for SIBs.",

author = "Park, {Seung Keun} and Kim, {Jin Koo} and {Chan Kang}, Yun",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2017R1A2B2008592). This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the granted nancial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20153030091450). Publisher Copyright: {\textcopyright} 2017 The Royal Society of Chemistry.",

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doi = "10.1039/c7ta05571d",

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T1 - Metal-organic framework-derived CoSe2/(NiCo)Se2 box-in-box hollow nanocubes with enhanced electrochemical properties for sodium-ion storage and hydrogen evolution

AU - Park, Seung Keun

AU - Kim, Jin Koo

AU - Chan Kang, Yun

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2017R1A2B2008592). This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the granted nancial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20153030091450). Publisher Copyright: © 2017 The Royal Society of Chemistry.

PY - 2017

Y1 - 2017

N2 - Multishell structured metal selenide nanocubes, namely, Co/(NiCo)Se2 box-in-box structures with different shell compositions, were successfully synthesized by applying zeolitic imidazolate framework-67 (ZIF-67) as a template. This strategy involved the fabrication of cube-shaped ZIF-67/Ni-Co layered double hydroxides with a yolk-shell structure and then transformation into Co/(NiCo)Se2 with a box-in-box structure by a selenization process under Ar/H2 conditions. During the selenization step, hollow structured CoSe2 cores were generated by Ostwald ripening, resulting in the formation of Co/(NiCo)Se2 with a box-in-box structure composed of an inner CoSe2 shell and an outer (NiCo)Se2 shell. Due to the synergetic effect of the unique structure and multicomponent selenide composition, the Co/(NiCo)Se2 with the box-in-box structure offered excellent dual functionality as both an anode for sodium ion batteries (SIBs) and an electrocatalyst for the hydrogen evolution reaction (HER). Electrochemical tests on the Co/(NiCo)Se2 with the box-in-box structure demonstrated a low Tafel slope (39.8 mV dec-1) and excellent stability. In addition, it delivered a high specific capacity of 497 mA h g-1 after 80 cycles, with a current density of 0.2 A g-1 and excellent cycling stability as an anode material for SIBs.

AB - Multishell structured metal selenide nanocubes, namely, Co/(NiCo)Se2 box-in-box structures with different shell compositions, were successfully synthesized by applying zeolitic imidazolate framework-67 (ZIF-67) as a template. This strategy involved the fabrication of cube-shaped ZIF-67/Ni-Co layered double hydroxides with a yolk-shell structure and then transformation into Co/(NiCo)Se2 with a box-in-box structure by a selenization process under Ar/H2 conditions. During the selenization step, hollow structured CoSe2 cores were generated by Ostwald ripening, resulting in the formation of Co/(NiCo)Se2 with a box-in-box structure composed of an inner CoSe2 shell and an outer (NiCo)Se2 shell. Due to the synergetic effect of the unique structure and multicomponent selenide composition, the Co/(NiCo)Se2 with the box-in-box structure offered excellent dual functionality as both an anode for sodium ion batteries (SIBs) and an electrocatalyst for the hydrogen evolution reaction (HER). Electrochemical tests on the Co/(NiCo)Se2 with the box-in-box structure demonstrated a low Tafel slope (39.8 mV dec-1) and excellent stability. In addition, it delivered a high specific capacity of 497 mA h g-1 after 80 cycles, with a current density of 0.2 A g-1 and excellent cycling stability as an anode material for SIBs.

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