DataVXAdvanced Functional MaterialsPaper
journal article·2024-12

Rutile‐Structured Ru0.48Mn0.52O2 Solid Solution for Highly Active and Stable Oxygen Evolution at Large Current Density in Acidic Media

Zonglin Li, Haoyun Sheng, Yichao Lin, Hongyan Hu, Hongfei Sun, Yan Dong, Xiaowei Chen, Lingzhi Wei, Ziqi Tian, Qianwang Chen, Jianwei Su, Liang Chen

Advanced Functional Materials· Volume 34· Issue 51
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Source abstract

Abstract

Abstract The development of active, stable, and cost‐effective electrocatalysts for the oxygen evolution reaction (OER) in acidic media is crucial for proton‐exchange‐membrane water electrolysis. Inspired by theoretical screening on a series of transition metal incorporated RuO2 systems, a low Ru‐content solid solution oxide (Ru0.48Mn0.52O2) achieved is fabricated by a simple two‐step synthesis method through the combination of rutile RuO2 and β‐MnO2. The Ru0.48Mn0.52O2 catalyst exhibits an exceptionally low overpotential of 154 mV at 10 mA cm−2 and maintains a high stability under a high current of 100 mA cm−2 for 50 h in 0.5 m H2SO4 electrolyte. Furthermore, the obtained catalyst exhibits sustained stability at a large current of 0.5 A cm−2 for at least 50 h when loaded onto a Ti felt. The in‐situ characterization results indicate that Ru0.48Mn0.52O2 preferably followed the adsorbate evolution mechanism rather than the lattice oxygen oxidation mechanism during the OER process, contributing to its high activity and stability at large current densities in acidic media.
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Research context

Energy storageCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Electrochemical Analysis and Applications · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institutes of Physical Science and Information Technology Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Ministry of Education) Anhui University Hefei 230601 P. R. China

Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 P. R. China

School of Materials Science and Engineering Hainan University Haikou 570228 P. R. China

School of Material Science and Engineering, Key Laboratory for Ecological‐Environment Materials of Jiangsu Province Yancheng Institute of Technology Yancheng 224051 P. R. China

Hefei National Laboratory for Physical Science at Microscale, Department of Materials Science & Engineering University of Science and Technology of China Hefei 230026 P. R. China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Natural Science Foundation of Anhui Province · Natural Science Foundation of Ningbo Municipality

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