Title:High-Performance Cobalt Chalcogenides for Oxygen Reduction Reaction
Volume: 2
Author(s): Kumar Kashyap Hazarika, Chiranjita Goswami and Pankaj Bharali*
Affiliation:
- Department of Chemical Sciences, Tezpur University, Napaam – 784028, Assam, India
Keywords:
Cobalt chalcogenides, Cobalt sulfides, Cobalt selenides, Cobalt tellurides, Oxygen reduction reaction, Fuel cells.
Abstract: The oxygen reduction reaction (ORR) is vital to numerous energy conversion technologies, such as fuel cells and metal-air batteries. Moreover, to
enhance the overall efficacy and durability of these devices, it is crucial to develop catalysts that are both effective and economical. Among the
many explored catalyst materials, cobalt chalcogenides have attracted considerable interest due to their unique properties and exceptional ORR
performance. This review focuses on the synthesis methods, structural characteristics, and electrochemical performance of high-performance cobalt
chalcogenides as catalysts for the ORR. In addition, the influence of various synthetic parameters on the catalytic activity and stability of cobalt
chalcogenides is investigated. Also addressed are the effects of defects, doping, and surface modification on the ORR performance of cobalt
chalcogenides. In addition, the use of cobalt chalcogenides in practical fuel cell devices is discussed, along with their outstanding performance as
ORR catalysts in both acidic and alkaline environments. The durability and long-term stability of cobalt chalcogenides under severe operating
conditions are evaluated, indicating their potential commercial applications. Finally, the field of cobalt chalcogenides for ORR challenges and
prospects are outlined. This review proposes strategies for further enhancing their catalytic activity, selectivity, and durability, such as interface
engineering and synergistic combinations with other catalyst materials. For researchers working on the development of next-generation ORR
catalysts and the practical implementation of cobalt chalcogenides for sustainable energy applications, the insights garnered from this review are
invaluable.
