Electrocatalytic Activities and Stabilities of Selenium Based Cobalt-Nickel Binary and Ternary Chalcogenides
- Resource Type
- Authors
- Jiaqi Liu; Jiwu Zheng; Qing Gong; Tengfei Zhang; Xuan Cheng
- Source
- ECS Meeting Abstracts. :1548-1548
- Subject
- Language
- ISSN
- 2151-2043
The requirement of precious platinum (Pt) based materials as electrocatalysts and the sluggish kinetics of oxygen reduction reaction (ORR) in a cathode have significantly impeded the commercialization of proton exchange membrane fuel cells. Much effort has been directly made to search for high performance Pt-free cathode catalysts. Chalcogenides are promising alternatives because of their moderate electrocatalytic activities and good selectivity toward ORR in acidic and basic media. The carbon supported binary cobalt selenide (CoSe2/C), nickel selenide (NiSe2/C) and ternary cobalt-nickel selenide (Co-Ni-Se/C) nanoparticles were prepared by a simple microwave synthesis route without or with heat treatment. The microstructure, electrocatalytic activities and stabilities of CoSe2/C, NiSe2/C and Co-Ni-Se/C catalysts were studied in 0.1 mol/L HClO4 or KOH solutions. The single cell performances of the as-prepared catalysts were further investigated and compared.