Evaluating the Growth of Ceria-Modified N-Doped Carbon-Based Materials and Their Performance in the Oxygen Reduction Reaction

Abstract

Owning to their distinctive electronic structure, rare-earth-based catalysts exhibit good performance in the oxygen reduction reaction (ORR) and can replace commercial Pt/C. In this study, CeO2-modified N-doped C-based materials were synthesized using salt template and high-temperature calcination methods, and the synthesis conditions were optimized. The successful synthesis of CeO2–CN–800 was confirmed through a series of characterization methods and electrochemical tests. The test results show that the material has the peak onset potential of 0.90 V and the half-wave potential of 0.84 V, and has good durability and methanol resistance. The material demonstrates good ORR catalytic performance and can be used in Zn–air batteries. Moreover, it is an excellent catalyst for new energy equipment.

Improvement in comprehensive properties of nanocomposite coatings electro-codeposited with nitride and ceria

“…Various types of ceramic combinations embedded in nickel-based coatings, such as Ni–La 2 O 3 –CeO 2 [30] and Ni–Bi 2 O 3 –CeO 2 [31], have been studied, and the results indicate a better enhancement effect than those reinforced by single-type ceramic particles. The rare earth oxide, cerium oxide (CeO 2 ), is an interesting ceramic material labelled with excellent anti-corrosion, wear resistance, catalytic activity, and good conductivity [30,32], and it has been used in MMCs for enhancement. Li et al [33] prepared Ni–W–ZrO 2 –CeO 2 nanocomposite protective coatings and found out that the combination of ZrO 2 and CeO 2 could obviously improve the hardness, wear, and corrosion resistance of the Ni-W matrix.…”