Porous Co3O4 materials prepared by solid-state thermolysis of a novel Co-MOF crystal and their superior energy storage performances for supercapacitors

Fanli Meng, Zhiguo Fang, Zuoxi Li, Weiwei Xu, Mengjiao Wang, Yanping Liu, Ji Zhang, Wanren Wang, Dongyuan Zhao, Xiaohui Guo

Research output: Contribution to journalArticleResearchpeer-review

Abstract

In this work, porous Co3O4 materials were prepared via a solid-state conversion process of a freshly prepared cobalt-based metal–organic framework (Co-MOF) crystal. Herein, the unique Co-MOF crystal was formed via the specific chemical coordination between the carboxylic ligand azobenzene-3,5,4′-tricarboxylic acid (H3ABTC) and the auxiliary ligand 4,4′-bipyridine (bpy) to construct 2-dimensional (2D) bilayer structural intermediates, which subsequently formed a 3D polycatenation supramolecular array architecture with the assistance of π–π stacking and hydrogen bonding interactions. Subsequently, porous Co3O4 particles were obtained by simple thermolysis of the Co-MOF crystals via a two-step calcination treatment. The results demonstrated that the as-made Co3O4 displays crystalline and well-defined porous features and can be applied as a supercapacitor electrode, and its energy storage performances were investigated in 2 M KOH electrolyte. The electrochemical results showed that the porous Co3O4 particles exhibit a high specific capacitance of 150 F g-1 at a current density of 1 A g-1 and retain slightly enhanced capacitance after 3400 cycles, which could be ascribed to its higher specific surface area and accessible channel structural features. The present approach is facile, controllable, and reproducible. Importantly, this specific solid-state thermal conversion strategy could be easily extended to prepare other porous metal and/or
metal oxide nanomaterials with specific surface textures and morphologies.
Original languageEnglish
Pages (from-to)7235-7241
Number of pages7
JournalJournal of Materials Chemistry A
Volume1
Issue number24
DOIs
Publication statusPublished - 2013
Externally publishedYes

Cite this

Meng, Fanli ; Fang, Zhiguo ; Li, Zuoxi ; Xu, Weiwei ; Wang, Mengjiao ; Liu, Yanping ; Zhang, Ji ; Wang, Wanren ; Zhao, Dongyuan ; Guo, Xiaohui. / Porous Co3O4 materials prepared by solid-state thermolysis of a novel Co-MOF crystal and their superior energy storage performances for supercapacitors. In: Journal of Materials Chemistry A. 2013 ; Vol. 1, No. 24. pp. 7235-7241.
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title = "Porous Co3O4 materials prepared by solid-state thermolysis of a novel Co-MOF crystal and their superior energy storage performances for supercapacitors",
abstract = "In this work, porous Co3O4 materials were prepared via a solid-state conversion process of a freshly prepared cobalt-based metal–organic framework (Co-MOF) crystal. Herein, the unique Co-MOF crystal was formed via the specific chemical coordination between the carboxylic ligand azobenzene-3,5,4′-tricarboxylic acid (H3ABTC) and the auxiliary ligand 4,4′-bipyridine (bpy) to construct 2-dimensional (2D) bilayer structural intermediates, which subsequently formed a 3D polycatenation supramolecular array architecture with the assistance of π–π stacking and hydrogen bonding interactions. Subsequently, porous Co3O4 particles were obtained by simple thermolysis of the Co-MOF crystals via a two-step calcination treatment. The results demonstrated that the as-made Co3O4 displays crystalline and well-defined porous features and can be applied as a supercapacitor electrode, and its energy storage performances were investigated in 2 M KOH electrolyte. The electrochemical results showed that the porous Co3O4 particles exhibit a high specific capacitance of 150 F g-1 at a current density of 1 A g-1 and retain slightly enhanced capacitance after 3400 cycles, which could be ascribed to its higher specific surface area and accessible channel structural features. The present approach is facile, controllable, and reproducible. Importantly, this specific solid-state thermal conversion strategy could be easily extended to prepare other porous metal and/ormetal oxide nanomaterials with specific surface textures and morphologies.",
author = "Fanli Meng and Zhiguo Fang and Zuoxi Li and Weiwei Xu and Mengjiao Wang and Yanping Liu and Ji Zhang and Wanren Wang and Dongyuan Zhao and Xiaohui Guo",
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language = "English",
volume = "1",
pages = "7235--7241",
journal = "Journal of Materials Chemistry A",
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Porous Co3O4 materials prepared by solid-state thermolysis of a novel Co-MOF crystal and their superior energy storage performances for supercapacitors. / Meng, Fanli; Fang, Zhiguo; Li, Zuoxi; Xu, Weiwei; Wang, Mengjiao; Liu, Yanping; Zhang, Ji; Wang, Wanren; Zhao, Dongyuan; Guo, Xiaohui.

In: Journal of Materials Chemistry A, Vol. 1, No. 24, 2013, p. 7235-7241.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Porous Co3O4 materials prepared by solid-state thermolysis of a novel Co-MOF crystal and their superior energy storage performances for supercapacitors

AU - Meng, Fanli

AU - Fang, Zhiguo

AU - Li, Zuoxi

AU - Xu, Weiwei

AU - Wang, Mengjiao

AU - Liu, Yanping

AU - Zhang, Ji

AU - Wang, Wanren

AU - Zhao, Dongyuan

AU - Guo, Xiaohui

PY - 2013

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N2 - In this work, porous Co3O4 materials were prepared via a solid-state conversion process of a freshly prepared cobalt-based metal–organic framework (Co-MOF) crystal. Herein, the unique Co-MOF crystal was formed via the specific chemical coordination between the carboxylic ligand azobenzene-3,5,4′-tricarboxylic acid (H3ABTC) and the auxiliary ligand 4,4′-bipyridine (bpy) to construct 2-dimensional (2D) bilayer structural intermediates, which subsequently formed a 3D polycatenation supramolecular array architecture with the assistance of π–π stacking and hydrogen bonding interactions. Subsequently, porous Co3O4 particles were obtained by simple thermolysis of the Co-MOF crystals via a two-step calcination treatment. The results demonstrated that the as-made Co3O4 displays crystalline and well-defined porous features and can be applied as a supercapacitor electrode, and its energy storage performances were investigated in 2 M KOH electrolyte. The electrochemical results showed that the porous Co3O4 particles exhibit a high specific capacitance of 150 F g-1 at a current density of 1 A g-1 and retain slightly enhanced capacitance after 3400 cycles, which could be ascribed to its higher specific surface area and accessible channel structural features. The present approach is facile, controllable, and reproducible. Importantly, this specific solid-state thermal conversion strategy could be easily extended to prepare other porous metal and/ormetal oxide nanomaterials with specific surface textures and morphologies.

AB - In this work, porous Co3O4 materials were prepared via a solid-state conversion process of a freshly prepared cobalt-based metal–organic framework (Co-MOF) crystal. Herein, the unique Co-MOF crystal was formed via the specific chemical coordination between the carboxylic ligand azobenzene-3,5,4′-tricarboxylic acid (H3ABTC) and the auxiliary ligand 4,4′-bipyridine (bpy) to construct 2-dimensional (2D) bilayer structural intermediates, which subsequently formed a 3D polycatenation supramolecular array architecture with the assistance of π–π stacking and hydrogen bonding interactions. Subsequently, porous Co3O4 particles were obtained by simple thermolysis of the Co-MOF crystals via a two-step calcination treatment. The results demonstrated that the as-made Co3O4 displays crystalline and well-defined porous features and can be applied as a supercapacitor electrode, and its energy storage performances were investigated in 2 M KOH electrolyte. The electrochemical results showed that the porous Co3O4 particles exhibit a high specific capacitance of 150 F g-1 at a current density of 1 A g-1 and retain slightly enhanced capacitance after 3400 cycles, which could be ascribed to its higher specific surface area and accessible channel structural features. The present approach is facile, controllable, and reproducible. Importantly, this specific solid-state thermal conversion strategy could be easily extended to prepare other porous metal and/ormetal oxide nanomaterials with specific surface textures and morphologies.

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