Microstructural control of Co3O4 nanoboxes for enhanced oxygen evolution in alkaline media

Jialin Liu; Chengzhi Wang; Lu Wang; Yongjie Zhao; Jingbo Li; Haibo Jin

doi:10.1016/j.jallcom.2020.155290

Microstructural control of Co₃O₄ nanoboxes for enhanced oxygen evolution in alkaline media

Jialin Liu, Chengzhi Wang, Lu Wang, Yongjie Zhao^*, Jingbo Li, Haibo Jin

^*Corresponding author for this work

School of Material Science and Engineering

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

7 Citations (Scopus)

Abstract

In order to study the effects of nanostructure configurations on surface electrocatalytic activity, a facile way for the design of hollow Co₃O₄ prisms with different configurations and sizes via controlling the reaction kinetics is developed. And their electrocatalytic performance is evaluated by a series of electrochemistry test. It reveals that open configuration for oxygen evolution reaction (OER) electrocatalysis possess conducive influence for charge transfer and oxygen desorption, endowing the optimal electrocatalytic activity. Accordingly, the optimal electrocatalytic activities of Co₃O₄ is demonstrated by optimizing microstructure, which with a small overpotential of 358 mV at a current density of 10 mA cm⁻² and a lower Tafel slope of 56 mV dec⁻¹. Comparable performance against noble metal-based electrocatalysts has been achieved.

Original language	English
Article number	155290
Journal	Journal of Alloys and Compounds
Volume	835
DOIs	https://doi.org/10.1016/j.jallcom.2020.155290
Publication status	Published - 15 Sept 2020

Keywords

CoO
Hollow structure
Oxygen evolution reaction
Reaction kinetics

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10.1016/j.jallcom.2020.155290

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title = "Microstructural control of Co3O4 nanoboxes for enhanced oxygen evolution in alkaline media",

abstract = "In order to study the effects of nanostructure configurations on surface electrocatalytic activity, a facile way for the design of hollow Co3O4 prisms with different configurations and sizes via controlling the reaction kinetics is developed. And their electrocatalytic performance is evaluated by a series of electrochemistry test. It reveals that open configuration for oxygen evolution reaction (OER) electrocatalysis possess conducive influence for charge transfer and oxygen desorption, endowing the optimal electrocatalytic activity. Accordingly, the optimal electrocatalytic activities of Co3O4 is demonstrated by optimizing microstructure, which with a small overpotential of 358 mV at a current density of 10 mA cm−2 and a lower Tafel slope of 56 mV dec−1. Comparable performance against noble metal-based electrocatalysts has been achieved.",

keywords = "CoO, Hollow structure, Oxygen evolution reaction, Reaction kinetics",

author = "Jialin Liu and Chengzhi Wang and Lu Wang and Yongjie Zhao and Jingbo Li and Haibo Jin",

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T1 - Microstructural control of Co3O4 nanoboxes for enhanced oxygen evolution in alkaline media

AU - Liu, Jialin

AU - Wang, Chengzhi

AU - Wang, Lu

AU - Zhao, Yongjie

AU - Li, Jingbo

AU - Jin, Haibo

PY - 2020/9/15

Y1 - 2020/9/15

N2 - In order to study the effects of nanostructure configurations on surface electrocatalytic activity, a facile way for the design of hollow Co3O4 prisms with different configurations and sizes via controlling the reaction kinetics is developed. And their electrocatalytic performance is evaluated by a series of electrochemistry test. It reveals that open configuration for oxygen evolution reaction (OER) electrocatalysis possess conducive influence for charge transfer and oxygen desorption, endowing the optimal electrocatalytic activity. Accordingly, the optimal electrocatalytic activities of Co3O4 is demonstrated by optimizing microstructure, which with a small overpotential of 358 mV at a current density of 10 mA cm−2 and a lower Tafel slope of 56 mV dec−1. Comparable performance against noble metal-based electrocatalysts has been achieved.

AB - In order to study the effects of nanostructure configurations on surface electrocatalytic activity, a facile way for the design of hollow Co3O4 prisms with different configurations and sizes via controlling the reaction kinetics is developed. And their electrocatalytic performance is evaluated by a series of electrochemistry test. It reveals that open configuration for oxygen evolution reaction (OER) electrocatalysis possess conducive influence for charge transfer and oxygen desorption, endowing the optimal electrocatalytic activity. Accordingly, the optimal electrocatalytic activities of Co3O4 is demonstrated by optimizing microstructure, which with a small overpotential of 358 mV at a current density of 10 mA cm−2 and a lower Tafel slope of 56 mV dec−1. Comparable performance against noble metal-based electrocatalysts has been achieved.

KW - CoO

KW - Hollow structure

KW - Oxygen evolution reaction

KW - Reaction kinetics

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JO - Journal of Alloys and Compounds

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Microstructural control of Co₃O₄ nanoboxes for enhanced oxygen evolution in alkaline media

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Keywords

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