CoOxfunctionalized IrO2-Sb2O5-SnO2anode with an enhanced activity and stability for electrocatalytic oxygen evolution

Ye Xie; Yuanfu Deng; Chunxiang Yang; Zhenou Zeng; Yingwei Li; Guohua Chen

doi:10.1016/j.jallcom.2016.11.240

CoO_xfunctionalized IrO₂-Sb₂O₅-SnO₂anode with an enhanced activity and stability for electrocatalytic oxygen evolution

Ye Xie, Yuanfu Deng^*, Chunxiang Yang, Zhenou Zeng, Yingwei Li, Guohua Chen

^*Corresponding author for this work

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

25 Citations (Scopus)

Abstract

Preparation of highly efficient and inexpensive electrodes for oxygen evolution reaction (OER) is of significant importance in the development of water splitting for hydrogen production. Ternary IrO₂-Sb₂O₅-SnO₂and cobalt-based oxides have been suggested to be high stability and low cost electrocatalysts for OER in acid and basic aqueous solution, respectively. Herein, we develop a serial of Ti/CoO_x-IrO₂-Sb₂O₅-SnO₂anodes by a simple thermal treatment of mixed metal chlorides on Ti substrate. It is found that the partial-substitution iridium by cobalt in Ti/Ir_0.1Sb_0.1Sn_0.8O_x(Ti/C₀ISS) anode shows an improved OER activity in acid and basic solution. For a Ti/Ir_0.05Co_0.05Sb_0.1Sn_0.8O_x(Ti/C₅ISS) anode, small overpotentials of 0.438 and 0.498 V are needed under the current densities of 10 and 100 mA cm⁻²in 0.5 M KOH, respectively. These values are remarkably lower than those of Ti/C₀ISS electrode and comparable to other nanometer metal oxides catalysts. Additionally, it exhibits a low Tafel slope of 55 mV dec⁻¹and displays excellent electrocatalytic durability for OER in alkaline solution under a high current density. These advantages indicate Ti/C₅ISS is a promising anode for water oxidation under high current densities.

Original language	English
Pages (from-to)	257-265
Journal	Journal of Alloys and Compounds
Volume	696
DOIs	https://doi.org/10.1016/j.jallcom.2016.11.240
Publication status	Published - 2017
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 [email protected].

Research Keywords

Anode
Iridium-based catalyst
Low overpotential
Oxygen evolution reaction
Water splitting

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@article{6442471969654f9cb5c7a7865a6c5ad2,

title = "CoOxfunctionalized IrO2-Sb2O5-SnO2anode with an enhanced activity and stability for electrocatalytic oxygen evolution",

abstract = "Preparation of highly efficient and inexpensive electrodes for oxygen evolution reaction (OER) is of significant importance in the development of water splitting for hydrogen production. Ternary IrO2-Sb2O5-SnO2and cobalt-based oxides have been suggested to be high stability and low cost electrocatalysts for OER in acid and basic aqueous solution, respectively. Herein, we develop a serial of Ti/CoOx-IrO2-Sb2O5-SnO2anodes by a simple thermal treatment of mixed metal chlorides on Ti substrate. It is found that the partial-substitution iridium by cobalt in Ti/Ir0.1Sb0.1Sn0.8Ox(Ti/C0ISS) anode shows an improved OER activity in acid and basic solution. For a Ti/Ir0.05Co0.05Sb0.1Sn0.8Ox(Ti/C5ISS) anode, small overpotentials of 0.438 and 0.498 V are needed under the current densities of 10 and 100 mA cm−2in 0.5 M KOH, respectively. These values are remarkably lower than those of Ti/C0ISS electrode and comparable to other nanometer metal oxides catalysts. Additionally, it exhibits a low Tafel slope of 55 mV dec−1and displays excellent electrocatalytic durability for OER in alkaline solution under a high current density. These advantages indicate Ti/C5ISS is a promising anode for water oxidation under high current densities.",

keywords = "Anode, Iridium-based catalyst, Low overpotential, Oxygen evolution reaction, Water splitting",

author = "Ye Xie and Yuanfu Deng and Chunxiang Yang and Zhenou Zeng and Yingwei Li and Guohua Chen",

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 [email protected].",

year = "2017",

doi = "10.1016/j.jallcom.2016.11.240",

language = "English",

volume = "696",

pages = "257--265",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - CoOxfunctionalized IrO2-Sb2O5-SnO2anode with an enhanced activity and stability for electrocatalytic oxygen evolution

AU - Xie, Ye

AU - Deng, Yuanfu

AU - Yang, Chunxiang

AU - Zeng, Zhenou

AU - Li, Yingwei

AU - Chen, Guohua

N1 - 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 [email protected].

PY - 2017

Y1 - 2017

N2 - Preparation of highly efficient and inexpensive electrodes for oxygen evolution reaction (OER) is of significant importance in the development of water splitting for hydrogen production. Ternary IrO2-Sb2O5-SnO2and cobalt-based oxides have been suggested to be high stability and low cost electrocatalysts for OER in acid and basic aqueous solution, respectively. Herein, we develop a serial of Ti/CoOx-IrO2-Sb2O5-SnO2anodes by a simple thermal treatment of mixed metal chlorides on Ti substrate. It is found that the partial-substitution iridium by cobalt in Ti/Ir0.1Sb0.1Sn0.8Ox(Ti/C0ISS) anode shows an improved OER activity in acid and basic solution. For a Ti/Ir0.05Co0.05Sb0.1Sn0.8Ox(Ti/C5ISS) anode, small overpotentials of 0.438 and 0.498 V are needed under the current densities of 10 and 100 mA cm−2in 0.5 M KOH, respectively. These values are remarkably lower than those of Ti/C0ISS electrode and comparable to other nanometer metal oxides catalysts. Additionally, it exhibits a low Tafel slope of 55 mV dec−1and displays excellent electrocatalytic durability for OER in alkaline solution under a high current density. These advantages indicate Ti/C5ISS is a promising anode for water oxidation under high current densities.

AB - Preparation of highly efficient and inexpensive electrodes for oxygen evolution reaction (OER) is of significant importance in the development of water splitting for hydrogen production. Ternary IrO2-Sb2O5-SnO2and cobalt-based oxides have been suggested to be high stability and low cost electrocatalysts for OER in acid and basic aqueous solution, respectively. Herein, we develop a serial of Ti/CoOx-IrO2-Sb2O5-SnO2anodes by a simple thermal treatment of mixed metal chlorides on Ti substrate. It is found that the partial-substitution iridium by cobalt in Ti/Ir0.1Sb0.1Sn0.8Ox(Ti/C0ISS) anode shows an improved OER activity in acid and basic solution. For a Ti/Ir0.05Co0.05Sb0.1Sn0.8Ox(Ti/C5ISS) anode, small overpotentials of 0.438 and 0.498 V are needed under the current densities of 10 and 100 mA cm−2in 0.5 M KOH, respectively. These values are remarkably lower than those of Ti/C0ISS electrode and comparable to other nanometer metal oxides catalysts. Additionally, it exhibits a low Tafel slope of 55 mV dec−1and displays excellent electrocatalytic durability for OER in alkaline solution under a high current density. These advantages indicate Ti/C5ISS is a promising anode for water oxidation under high current densities.

KW - Anode

KW - Iridium-based catalyst

KW - Low overpotential

KW - Oxygen evolution reaction

KW - Water splitting

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84998693312&origin=recordpage

U2 - 10.1016/j.jallcom.2016.11.240

DO - 10.1016/j.jallcom.2016.11.240

M3 - RGC 21 - Publication in refereed journal

SN - 0925-8388

VL - 696

SP - 257

EP - 265

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -