Efficient Acidic H₂O₂ Electrosynthesis over Co Atoms Anchored on Nitrogen–doped Hierarchical Porous Carbon

Authors

• Xiao Huang, State Key Laboratory of Green and Efficient Development of Phosphorus Resources, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China; Hubei Key Laboratory of Processing and Application of Catalytic Materials, College of Chemistry and Chemical Engineering, Huanggang Normal University, Huanggang 438000, China.
• Zihao Zhan, State Key Laboratory of Green and Efficient Development of Phosphorus Resources, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China.
• Haoxu Niu, State Key Laboratory of Green and Efficient Development of Phosphorus Resources, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China.
• Guanyu Luo, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
• Jintao Huang, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
• Boxuan Jin, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
• Deli Wang, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Document Type

Article

Corresponding Author(s)

Deli Wang(wangdl81125@hust.edu.cn)

Abstract

The two–electron oxygen reduction reaction (2e⁻ ORR) presents a promising route for the on-site production of hydrogen peroxide (H₂O₂), offering a green alternative to energy–consuming anthraquinone process. However, the high selectivity toward the competing 4e⁻ ORR over the desired 2e⁻ pathway leads to low Faradaic efficiency for H₂O₂, posing a critical challenge in catalyst design. In this work, a nitrogen–doped hollow hierarchical porous carbon with anchored Co atoms (Co−N/HPC) is constructed for high-performance H₂O₂ production. The Co−N/HPC catalyst shows excellent 2e⁻ ORR performance, achieving an H₂O₂ selectivity approaching 100% at an applied potential of 0.4 V (vs. RHE). Moreover, the in situ generated H₂O₂ proves highly effective in degrading organic pollutants, showcasing a dual-functionality for environmental remediation. Physical characterization and simulations confirm that the enhanced performance is attributed to the unique hierarchical structure, which facilitates fast electrolyte diffusion and boosts H₂O₂ selectivity. This work opens a new avenue for the design of advanced electrocatalysts that integrate efficient H₂O₂ production with direct application.

Graphical Abstract

Keywords

Oxygen reduction reaction, H2O2, Electrosynthesis, Nitrogen–doped carbon, Hierarchical structure

DOI

10.61558/2993-074X.3620

Online Date

6-11-2026

Recommended Citation

Xiao Huang, Zihao Zhan, Haoxu Niu, Guanyu Luo, Jintao Huang, Boxuan Jin, Deli Wang. Efficient Acidic H₂O₂ Electrosynthesis over Co Atoms Anchored on Nitrogen–doped Hierarchical Porous Carbon[J]. Journal of Electrochemistry, doi: 10.61558/2993-074X.3620.