Effects of the geometry and operating temperature on the stability of Ti/IrO 2-SnO 2-Sb 2O 5 electrodes for O 2 evolution

Xusong Qin; Furong Gao; Guohua Chen

doi:10.1007/s10800-010-0154-2

Effects of the geometry and operating temperature on the stability of Ti/IrO ₂-SnO ₂-Sb ₂O ₅ electrodes for O ₂ evolution

Xusong Qin, Furong Gao, Guohua Chen

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

20 Citations (Scopus)

Abstract

Ternary IrO ₂-Sb ₂Os-SnO ₂ anode has shown its superiorities over IrO ₂ and many other electrocatalysts for O ₂ evolution, in terms of electrochemical stability, activity and cost. The performance of IrO ₂-Sb ₂O ₅-SnO ₂ anodes is affected by its electrochemical properties and operating conditions. In this paper, the electrochemical stability and activity of the Ti/IrO ₂-Sb ₂O ₅-SnO ₂ anodes prepared with three different geometries were investigated under different operating conditions. It was found that anodes with large mean curvature have high electrochemical stability. Although increasing temperature results in a decrease in the stability of Ti/IrO ₂-Sb ₂O ₅-SnO ₂, the anode with a mean curvature of 200 m ^-1 still shows acceptable service life even at 70 ^°C. This tolerance of high temperature was attributed to the thermal expansion difference between the substrate and the coating layer, the redox window for Ir(V)Z Ir(IV) conversion, and the redox reversibility of Sb and Sn species in the coating layer. © Springer Science+Business Media B.V. 2010.

Original language	English
Pages (from-to)	1797-1805
Journal	Journal of Applied Electrochemistry
Volume	40
Issue number	10
DOIs	https://doi.org/10.1007/s10800-010-0154-2
Publication status	Published - Oct 2010
Externally published	Yes

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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

DSA
Electrochemical process
Geometry effect
High temperature
Metal oxide anode
Service life

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title = "Effects of the geometry and operating temperature on the stability of Ti/IrO 2-SnO 2-Sb 2O 5 electrodes for O 2 evolution",

abstract = "Ternary IrO 2-Sb 2Os-SnO 2 anode has shown its superiorities over IrO 2 and many other electrocatalysts for O 2 evolution, in terms of electrochemical stability, activity and cost. The performance of IrO 2-Sb 2O 5-SnO 2 anodes is affected by its electrochemical properties and operating conditions. In this paper, the electrochemical stability and activity of the Ti/IrO 2-Sb 2O 5-SnO 2 anodes prepared with three different geometries were investigated under different operating conditions. It was found that anodes with large mean curvature have high electrochemical stability. Although increasing temperature results in a decrease in the stability of Ti/IrO 2-Sb 2O 5-SnO 2, the anode with a mean curvature of 200 m -1 still shows acceptable service life even at 70 °C. This tolerance of high temperature was attributed to the thermal expansion difference between the substrate and the coating layer, the redox window for Ir(V)Z Ir(IV) conversion, and the redox reversibility of Sb and Sn species in the coating layer. {\textcopyright} Springer Science+Business Media B.V. 2010.",

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author = "Xusong Qin and Furong Gao and Guohua Chen",

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TY - JOUR

T1 - Effects of the geometry and operating temperature on the stability of Ti/IrO 2-SnO 2-Sb 2O 5 electrodes for O 2 evolution

AU - Qin, Xusong

AU - Gao, Furong

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 - 2010/10

Y1 - 2010/10

N2 - Ternary IrO 2-Sb 2Os-SnO 2 anode has shown its superiorities over IrO 2 and many other electrocatalysts for O 2 evolution, in terms of electrochemical stability, activity and cost. The performance of IrO 2-Sb 2O 5-SnO 2 anodes is affected by its electrochemical properties and operating conditions. In this paper, the electrochemical stability and activity of the Ti/IrO 2-Sb 2O 5-SnO 2 anodes prepared with three different geometries were investigated under different operating conditions. It was found that anodes with large mean curvature have high electrochemical stability. Although increasing temperature results in a decrease in the stability of Ti/IrO 2-Sb 2O 5-SnO 2, the anode with a mean curvature of 200 m -1 still shows acceptable service life even at 70 °C. This tolerance of high temperature was attributed to the thermal expansion difference between the substrate and the coating layer, the redox window for Ir(V)Z Ir(IV) conversion, and the redox reversibility of Sb and Sn species in the coating layer. © Springer Science+Business Media B.V. 2010.

AB - Ternary IrO 2-Sb 2Os-SnO 2 anode has shown its superiorities over IrO 2 and many other electrocatalysts for O 2 evolution, in terms of electrochemical stability, activity and cost. The performance of IrO 2-Sb 2O 5-SnO 2 anodes is affected by its electrochemical properties and operating conditions. In this paper, the electrochemical stability and activity of the Ti/IrO 2-Sb 2O 5-SnO 2 anodes prepared with three different geometries were investigated under different operating conditions. It was found that anodes with large mean curvature have high electrochemical stability. Although increasing temperature results in a decrease in the stability of Ti/IrO 2-Sb 2O 5-SnO 2, the anode with a mean curvature of 200 m -1 still shows acceptable service life even at 70 °C. This tolerance of high temperature was attributed to the thermal expansion difference between the substrate and the coating layer, the redox window for Ir(V)Z Ir(IV) conversion, and the redox reversibility of Sb and Sn species in the coating layer. © Springer Science+Business Media B.V. 2010.

KW - DSA

KW - Electrochemical process

KW - Geometry effect

KW - High temperature

KW - Metal oxide anode

KW - Service life

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DO - 10.1007/s10800-010-0154-2

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JO - Journal of Applied Electrochemistry

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