Porous Co3O4 nanoplatelets by self-supported formation as electrode material for lithium-ion batteries

Jieqiang Wang; Guodong Du; Rong Zeng; Ben Niu; Zhixin Chen; Zaiping Guo; Shixue Dou

doi:10.1016/j.electacta.2010.03.048

Porous Co₃O₄ nanoplatelets by self-supported formation as electrode material for lithium-ion batteries

Jieqiang Wang, Guodong Du, Rong Zeng, Ben Niu, Zhixin Chen, Zaiping Guo, Shixue Dou

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

58 Citations (Scopus)

Abstract

In this paper, we have reported a simple and rapid approach for the large-scale synthesis of β-Co(OH)₂ nanoplatelets via the microwave hydrothermal process using potassium hydroxide as mineralizer at 140 °C for 3 h. Calcining the β-Co(OH)₂ nanoplatelets at 350 °C for 2 h, porous Co₃O₄ nanoplatelets with a 3D quasi-single-crystal framework were obtained. The process of converting the β-Co(OH)₂ nanoplatelets into the Co₃O₄ nanoplatelets is a self-supported topotactic transformation, which is easily controlled by varying the calcining temperature. The textural characteristics of Co₃O₄ products have strong positive effects on their electrochemical properties as electrode materials in lithium-ion batteries. The obtained porous Co₃O₄ nanoplatelets exhibit a low initial irreversible loss (18.1%), ultrahigh capacity, and excellent cyclability. For example, a reversible capacity of 900 mAh g^-1 can be maintained after 100 cycles. © 2010 Elsevier Ltd.

Original language	English
Pages (from-to)	4805-4811
Journal	Electrochimica Acta
Volume	55
Issue number	16
DOIs	https://doi.org/10.1016/j.electacta.2010.03.048
Publication status	Published - 30 Jun 2010
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.

Funding

This work was supported by the Foundation for Excellent Middle-aged or Young Scientists from Shandong Province under No. BS2009CL029 and the Australian Research Council through a Discovery Project (project ID: DP0879070).

Research Keywords

Co3O4 nanoplatelets
Electrochemical properties
Porous
Self-supported formation
Textural characteristics

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Cite this

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title = "Porous Co3O4 nanoplatelets by self-supported formation as electrode material for lithium-ion batteries",

abstract = "In this paper, we have reported a simple and rapid approach for the large-scale synthesis of β-Co(OH)2 nanoplatelets via the microwave hydrothermal process using potassium hydroxide as mineralizer at 140 °C for 3 h. Calcining the β-Co(OH)2 nanoplatelets at 350 °C for 2 h, porous Co3O4 nanoplatelets with a 3D quasi-single-crystal framework were obtained. The process of converting the β-Co(OH)2 nanoplatelets into the Co3O4 nanoplatelets is a self-supported topotactic transformation, which is easily controlled by varying the calcining temperature. The textural characteristics of Co3O4 products have strong positive effects on their electrochemical properties as electrode materials in lithium-ion batteries. The obtained porous Co3O4 nanoplatelets exhibit a low initial irreversible loss (18.1%), ultrahigh capacity, and excellent cyclability. For example, a reversible capacity of 900 mAh g-1 can be maintained after 100 cycles. {\textcopyright} 2010 Elsevier Ltd.",

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AU - Wang, Jieqiang

AU - Du, Guodong

AU - Zeng, Rong

AU - Niu, Ben

AU - Chen, Zhixin

AU - Guo, Zaiping

AU - Dou, Shixue

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N2 - In this paper, we have reported a simple and rapid approach for the large-scale synthesis of β-Co(OH)2 nanoplatelets via the microwave hydrothermal process using potassium hydroxide as mineralizer at 140 °C for 3 h. Calcining the β-Co(OH)2 nanoplatelets at 350 °C for 2 h, porous Co3O4 nanoplatelets with a 3D quasi-single-crystal framework were obtained. The process of converting the β-Co(OH)2 nanoplatelets into the Co3O4 nanoplatelets is a self-supported topotactic transformation, which is easily controlled by varying the calcining temperature. The textural characteristics of Co3O4 products have strong positive effects on their electrochemical properties as electrode materials in lithium-ion batteries. The obtained porous Co3O4 nanoplatelets exhibit a low initial irreversible loss (18.1%), ultrahigh capacity, and excellent cyclability. For example, a reversible capacity of 900 mAh g-1 can be maintained after 100 cycles. © 2010 Elsevier Ltd.

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