Covalent Triazine Framework Anchored with Co₃O₄ Nanoparticles for Efficient Oxygen Reduction

Abstract

The oxygen reduction reaction (ORR) is an important process in energy conversion and storage devices. Great efforts have been focused on developing efficient, durable, and low-cost non-Pt catalysts. In this study, a novel hybrid ORR catalyst of Co 3 O 4 and covalent triazine framework (CTF) was prepared through the in-situ growth of Co 3 O 4 nanoparticles on CTF by using a hydrothermal method. Systematical studies revealed that this hybrid catalyst not only has a synergistic catalytic effect in the ORR, but also has superior stability and better methanol resistance than commercial Pt/C catalysts.

Nickel nanoparticles supported on a covalent triazine framework as electrocatalyst for oxygen evolution reaction and oxygen reduction reactions

“…For a Co 3 O 4 /CTF700-1:1 composite it has been founded that it exhibits improved ORR activity (half-wave potential of 0.84 V) compared to pure CTF700 and Co 3 O 4 nanoparticles. The amount of Co 3 O 4 in the composite material played an important role since it changed the activity of the composite but no activity trend related to the different used amounts was observed [20]. We observed a better activity of Ni/CTF-1-600-22, which means that a fraction of 22 wt % Ni is apparently more suitable than the 33 wt % in Ni/CTF-1-600-33.…”

“…Among the transition-metal-based OER and ORR catalysts, Ni-containing catalysts are promising candidates [7,[11][12][13]. The performance of the nickel catalysts could be further enhanced via modifications, such as the usage of carbon supports including N-doped graphene [14], active carbon [15], graphene oxide [16,17], carbon nanotubes [12,18] and covalent triazine frameworks (CTFs) [19,20].…”

“…In the group of Prof. Fan, Co 3 O 4 /CTF1-700-1:1 has been studied as ORR catalyst and showed a half-wave potential of 0.84 V vs a reversible hydrogen electrode (RHE) [20]. Kamiya et.…”

Carbon Monoxide‐Templated Synthesis of Coral‐Like Clean PtPd Nanochains as Efficient Oxygen Reduction Catalyst

“…Oxygen reduction reaction (ORR) is the cornerstone of various sustainable energy‐conversion technologies, such as fuel cells and metal‐air batteries. However, the sluggish reaction kinetics requires efficient catalysts to lower the reaction energy barrier for practical applications . Various Pt nanostructures have been widely investigated as efficient electrocatalysts for ORR .…”

Enhanced Oxygen Reduction Stability and Activity by Co and N (or O) Interaction in CoO on N‐Doped Carbon Prepared through Spray Pyrolysis

“…However, many researchers have recently been focusing on the development of alternative materials, such as non‐precious catalysts, because of the inherently high cost of Pt due to its low global reserves ,,. Cobalt‐based composites, especially spinel CoO,, Co 3 O 4 , and MnCo 2 O 4 are among the most promising candidates to have been studied, due to their low metal cost, abundance, high conductivity, and excellent catalytic performance. In addition, metal‐dopant carbon catalysts, commonly abbreviated as M‐ E dopant ‐Carbon ( E dopant =N, B, P, Se, S, etc.)…”