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Nano Research Energy 2023, 2: e9120070 https://doi.org/10.26599/NRE.2023.9120070
Research Article | Open Access | Issue | Published: 15 May 2023

Phase engineering oriented defect-rich amorphous/crystalline RuO2 nanoporous particles for boosting oxygen evolution reaction in acid media

Show Author's Information Chengming Wang1,  Qinghong Geng1,  Longlong Fan1,  Jun-Xuan Li1,  Lian Ma1,  Cuiling Li1,2,3( )
Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Binzhou Institute of Technology, Binzhou 256600, China
Keywords:
electrocatalysis, porous material, oxygen evolution reaction (OER), phase engineering, ruthenium oxide (RuO2)
Cite this article:
Wang C, Geng Q, Fan L, et al. Phase engineering oriented defect-rich amorphous/crystalline RuO2 nanoporous particles for boosting oxygen evolution reaction in acid media. Nano Research Energy, 2023, 2: e9120070. https://doi.org/10.26599/NRE.2023.9120070
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Abstract Full text Electronic supplementary material About this article

Imposing phase engineering to porous materials is promising to realize outperforming electrocatalytic performances by taking advantages of the merits of porous nanoarchitecture and heterophase structure. In this work, amorphous/crystalline ruthenium oxide (RuO2) porous particles with rationally regulated heterophases are successfully prepared by integrating the phase engineering into the porous material synthesis. The resultant defect-rich amorphous/crystalline RuO2 porous particles exhibit excellent electrocatalytic performance toward the oxygen evolution reaction, achieving a low overpotential of 165 mV at a current density of 10 mA·cm−2 and a high mass activity up to 133.8 mA·cm−2 at a low overpotential of 200 mV. This work indicates that the synergistic effect of amorphous/crystalline heterophase and porous structural characteristics enables RuO2 to trigger a superior electrocatalytic activity.


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About this article

Phase engineering oriented defect-rich amorphous/crystalline RuO2 nanoporous particles for boosting oxygen evolution reaction in acid media

Show Author's information Chengming Wang1, Qinghong Geng1, Longlong Fan1, Jun-Xuan Li1, Lian Ma1, Cuiling Li1,2,3( )
Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Binzhou Institute of Technology, Binzhou 256600, China

Abstract

Imposing phase engineering to porous materials is promising to realize outperforming electrocatalytic performances by taking advantages of the merits of porous nanoarchitecture and heterophase structure. In this work, amorphous/crystalline ruthenium oxide (RuO2) porous particles with rationally regulated heterophases are successfully prepared by integrating the phase engineering into the porous material synthesis. The resultant defect-rich amorphous/crystalline RuO2 porous particles exhibit excellent electrocatalytic performance toward the oxygen evolution reaction, achieving a low overpotential of 165 mV at a current density of 10 mA·cm−2 and a high mass activity up to 133.8 mA·cm−2 at a low overpotential of 200 mV. This work indicates that the synergistic effect of amorphous/crystalline heterophase and porous structural characteristics enables RuO2 to trigger a superior electrocatalytic activity.

Keywords: electrocatalysis, porous material, oxygen evolution reaction (OER), phase engineering, ruthenium oxide (RuO2)

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Received: 20 March 2023
Revised: 05 April 2023
Accepted: 08 April 2023
Published: 15 May 2023
Issue date: September 2023

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© The Author(s) 2023. Published by Tsinghua University Press.

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The authors acknowledge the Analysis and Testing Center in Beijing Institute of Technology for technical support.

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