Related Experiment Video
Updated: Jan 30, 2026

Scalable Syntheses of Graphene Oxide and Reduced Graphene Oxide using Cascade Design Oxidation and Highly Basic Reduction Reactions
Published on: July 3, 2025
A Hybrid Material Combined Copper Oxide with Graphene for an Oxygen Reduction Reaction in an Alkaline Medium
Jiemei Yu1,2, Taizhong Huang3, Zhankun Jiang4
1School of Chemistry and Chemical Engineering, University of Jinan, 336 West Nanxinzhuang Road, Jinan 250022, China. chm_yujm@ujn.edu.cn.
Abstract:
In this work, an electrode material based on CuO nanoparticles (NPs)/graphene (G) is developed for ORR in alkaline medium. According to the characterization of scanning electron microscope and transmission electron microscope, CuO NPs are uniformly distributed on the wrinkled G sheets. The X-ray diffraction test reveals that the phase of CuO is monoclinic. The CuO/G hybrid electrode exhibits a positive onset potential (0.8 V), high cathodic current density (3.79 × 10-5 mA/cm²) and high electron transfer number (four-electron from O₂ to H₂O) for ORR in alkaline media. Compared with commercial Pt/C electrocatalyst, the CuO/G electrode also shows superior fuel durability. The high electrocatalytic activity and durability are attribute to the strong coupling between CuO NPs and G nanosheets.
Related Concept Videos
Oxidation-Reduction Reactions
Reactions at the Benzylic Position: Oxidation and Reduction
Phase I Reactions: Reductive Reactions
Oxidation and Reduction of Organic Molecules
The removal of an electron from a molecule, results in a...
Synthesis and Decomposition Reactions
Oxidation Numbers

