A RuO2IrO2 electrocatalyst with an optimal composition and novel microstructure for oxygen evolving in the single cell

Feng Ye; Yanpeng Cao; Weiwei Han; Yakun Yang; Yuancheng Feng; Peng Liu; Chao Xu; Xiaoze Du; Woochul Yang; Guicheng Liu

doi:10.1007/s11814-021-0942-x

A RuO₂IrO₂ electrocatalyst with an optimal composition and novel microstructure for oxygen evolving in the single cell

Feng Ye, Yanpeng Cao, Weiwei Han, Yakun Yang, Yuancheng Feng, Peng Liu, Chao Xu, Xiaoze Du, Woochul Yang, Guicheng Liu

Department of Physics

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

14 Scopus citations

Abstract

A highly active RuO₂IrO₂ electrocatalyst was developed via dip-coating/calcination method for oxygen evolution reaction (OER). The catalyst on Ti substrate with a 7/3 molar ratio between Ru and Ir showed the highest electrocatalytic activity for OER among composite samples in different molar ratios. Moreover, the properties of RuO₂IrO₂ grown on carbon paper were evaluated by proton exchange membrane water electrolysis single cell. Compared with the micron-particle structure of RuO₂IrO₂ catalyst on the Ti substrate, the catalyst grown on the carbon paper showed a novel nano dendrite shape and can be used directly as the gas diffusion electrode. Owing to the large surface area of the catalyst, the nano dendrite-shaped RuO₂IrO₂ catalyst exhibits excellent OER performance in the single cell. Furthermore, a cell voltage of 2.50 V is achieved under 200 mA cm⁻² at 30 °C by using the optimal composition RuO₂IrO₂ (Ru: Ir=7/3) and the commercial 20% Pt/C as anode and cathode, respectively.

Original language	English
Pages (from-to)	596-604
Number of pages	9
Journal	Korean Journal of Chemical Engineering
Volume	39
Issue number	3
DOIs	https://doi.org/10.1007/s11814-021-0942-x
State	Published - Mar 2022

Keywords

Catalytic Activity
Hydrogen Generation
Oxygen Evolving
PEM
RuOIrO Catalyst

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10.1007/s11814-021-0942-x

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title = "A RuO2IrO2 electrocatalyst with an optimal composition and novel microstructure for oxygen evolving in the single cell",

abstract = "A highly active RuO2IrO2 electrocatalyst was developed via dip-coating/calcination method for oxygen evolution reaction (OER). The catalyst on Ti substrate with a 7/3 molar ratio between Ru and Ir showed the highest electrocatalytic activity for OER among composite samples in different molar ratios. Moreover, the properties of RuO2IrO2 grown on carbon paper were evaluated by proton exchange membrane water electrolysis single cell. Compared with the micron-particle structure of RuO2IrO2 catalyst on the Ti substrate, the catalyst grown on the carbon paper showed a novel nano dendrite shape and can be used directly as the gas diffusion electrode. Owing to the large surface area of the catalyst, the nano dendrite-shaped RuO2IrO2 catalyst exhibits excellent OER performance in the single cell. Furthermore, a cell voltage of 2.50 V is achieved under 200 mA cm−2 at 30 °C by using the optimal composition RuO2IrO2 (Ru: Ir=7/3) and the commercial 20\% Pt/C as anode and cathode, respectively.",

keywords = "Catalytic Activity, Hydrogen Generation, Oxygen Evolving, PEM, RuOIrO Catalyst",

author = "Feng Ye and Yanpeng Cao and Weiwei Han and Yakun Yang and Yuancheng Feng and Peng Liu and Chao Xu and Xiaoze Du and Woochul Yang and Guicheng Liu",

note = "Publisher Copyright: {\textcopyright} 2022, The Korean Institute of Chemical Engineers.",

year = "2022",

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doi = "10.1007/s11814-021-0942-x",

language = "English",

volume = "39",

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T1 - A RuO2IrO2 electrocatalyst with an optimal composition and novel microstructure for oxygen evolving in the single cell

AU - Ye, Feng

AU - Cao, Yanpeng

AU - Han, Weiwei

AU - Yang, Yakun

AU - Feng, Yuancheng

AU - Liu, Peng

AU - Xu, Chao

AU - Du, Xiaoze

AU - Yang, Woochul

AU - Liu, Guicheng

PY - 2022/3

Y1 - 2022/3

N2 - A highly active RuO2IrO2 electrocatalyst was developed via dip-coating/calcination method for oxygen evolution reaction (OER). The catalyst on Ti substrate with a 7/3 molar ratio between Ru and Ir showed the highest electrocatalytic activity for OER among composite samples in different molar ratios. Moreover, the properties of RuO2IrO2 grown on carbon paper were evaluated by proton exchange membrane water electrolysis single cell. Compared with the micron-particle structure of RuO2IrO2 catalyst on the Ti substrate, the catalyst grown on the carbon paper showed a novel nano dendrite shape and can be used directly as the gas diffusion electrode. Owing to the large surface area of the catalyst, the nano dendrite-shaped RuO2IrO2 catalyst exhibits excellent OER performance in the single cell. Furthermore, a cell voltage of 2.50 V is achieved under 200 mA cm−2 at 30 °C by using the optimal composition RuO2IrO2 (Ru: Ir=7/3) and the commercial 20% Pt/C as anode and cathode, respectively.

AB - A highly active RuO2IrO2 electrocatalyst was developed via dip-coating/calcination method for oxygen evolution reaction (OER). The catalyst on Ti substrate with a 7/3 molar ratio between Ru and Ir showed the highest electrocatalytic activity for OER among composite samples in different molar ratios. Moreover, the properties of RuO2IrO2 grown on carbon paper were evaluated by proton exchange membrane water electrolysis single cell. Compared with the micron-particle structure of RuO2IrO2 catalyst on the Ti substrate, the catalyst grown on the carbon paper showed a novel nano dendrite shape and can be used directly as the gas diffusion electrode. Owing to the large surface area of the catalyst, the nano dendrite-shaped RuO2IrO2 catalyst exhibits excellent OER performance in the single cell. Furthermore, a cell voltage of 2.50 V is achieved under 200 mA cm−2 at 30 °C by using the optimal composition RuO2IrO2 (Ru: Ir=7/3) and the commercial 20% Pt/C as anode and cathode, respectively.

KW - Catalytic Activity

KW - Hydrogen Generation

KW - Oxygen Evolving

KW - PEM

KW - RuOIrO Catalyst

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DO - 10.1007/s11814-021-0942-x

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SN - 0256-1115

VL - 39

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JO - Korean Journal of Chemical Engineering

JF - Korean Journal of Chemical Engineering

IS - 3

ER -

A RuO₂IrO₂ electrocatalyst with an optimal composition and novel microstructure for oxygen evolving in the single cell

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