Citation: Da Yue, Tanglue Feng, Zhicheng Zhu, Mingcheng Zhang, Liyuan Chen, Xiao Han, Haizhu Sun, Bai Yang. Carbonized polymer dots confined active Ru-O sites for boosting electrocatalytic oxygen evolution[J]. Chinese Chemical Letters, ;2025, 36(11): 111393. doi: 10.1016/j.cclet.2025.111393 shu

Carbonized polymer dots confined active Ru-O sites for boosting electrocatalytic oxygen evolution

Da Yue ^a ,
Tanglue Feng ^b ,
Zhicheng Zhu ^a ,
Mingcheng Zhang ^c ,
Liyuan Chen ^d ,
Xiao Han ^a ,
Haizhu Sun ^e ,
Bai Yang ^{a, *,}

a.
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
b.
School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
c.
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
d.
National & Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, College of Chemistry, Jilin University, Changchun 130012, China
e.
National & Local United Engineering Laboratory for Power Batteries, College of Chemistry, Northeast Normal University, Changchun 130024, China

byangchem@jlu.edu.cn

Received Date: 14 March 2025
Revised Date: 27 May 2025
Accepted Date: 28 May 2025
Available Online: 29 May 2025

Figures(4)

Designing efficient and stable electrocatalysts for the oxygen evolution reaction (OER) is of paramount importance for many energy-related technologies and devices. Herein, we propose a controlled oxidation pyrolysis strategy to develop carbonized polymer dots (CPDs)-modified Rh-doped RuO₂ electrocatalyst (Rh-RuO₂/CPDs). CPDs act as structure-directing agents, facilitating the formation of small-sized Rh-RuO₂/CPDs nanoparticles and engineering them with abundant defective structures and stable Ru-O sites. The experimental results and theoretical simulation unravel that the modulation effect of CPDs and Rh doping can effectively regulate the electronic structure, valence state and morphology of active Ru-O sites, thereby enhancing the electron transfer at the active site interface and optimizing the chemisorption behavior of oxygen intermediates. The resultant Rh-RuO₂/CPDs demonstrates overpotentials of 168 and 197 mV at 10 mA/cm² for OER in 0.5 mol/L H₂SO₄ and 1.0 mol/L KOH solution, respectively, and long-term catalytic stability.
- Carbonized polymer dots,
- Confinement effect,
- Electrocatalysts,
- Oxygen evolution reaction,
- Ruthenium dioxide,
- Defect
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