Journal article
Two-Dimensional N,S-Codoped Carbon/Co9S8 Catalysts Derived from Co(OH)(2) Nanosheets for Oxygen Reduction Reaction
ACS applied materials & interfaces, Vol.9(42), pp.36755-36761
10/25/2017
PMID: 28949501
Abstract
The development of highly active and cost-efficient electrocatalysts for the oxygen reduction reaction (ORR) is of great importance in a wide range of clean energy devices, including fuel cells and metal-air batteries. Herein, the simultaneous formation of Co9S8 and N,S-codoped carbon with high ORR catalytic activity was achieved in an efficient strategy with a dual templates system. First, Co(OH)(2) nanosheets and tetraethyl orthosilicate were utilized to direct the formation of two-dimensional carbon precursors, which were then dispersed into thiourea solution. After subsequent pyrolysis and template removal, N,S-codoped porous carbon-sheet-confined Co9S8 catalysts (Co9S8/NSC) were obtained. Owing to the morphological and compositional advantages as well as the synergistic effects, the resultant Co9S8/NSC catalysts with a modified doping level and pyrolysis degree exhibit superior ORR catalytic activity and long-term stability compared with the state-of-the-art Pt/C catalysts in alkaline media. Remarkably, the as-prepared carbon composites also reveal exceptional tolerance of methanol, indicating their potential applications in fuel cells.
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Details
- Title
- Two-Dimensional N,S-Codoped Carbon/Co9S8 Catalysts Derived from Co(OH)(2) Nanosheets for Oxygen Reduction Reaction
- Creators
- Shaofang Fu - Washington State UniversityChengzhou Zhu - Washington State UniversityJunhua Song - Washington State UniversityShuo Feng - Washington State UniversityDan Du - Washington State UniversityMark H. Engelhard - Pacific Northwest National LaboratoryDongdong Xiao - Environmental Molecular Sciences LaboratoryDongsheng Li - Environmental Molecular Sciences LaboratoryYuehe Lin - Washington State University
- Publication Details
- ACS applied materials & interfaces, Vol.9(42), pp.36755-36761
- Academic Unit
- School of Mechanical and Materials Engineering
- Publisher
- Amer Chemical Soc
- Number of pages
- 7
- Grant note
- DE-AC05-76RL0183 / DOE by Battelle; United States Department of Energy (DOE) startup fund of Washington State University Department of Energy's Office of Biological and Environmental Research; United States Department of Energy (DOE)
- Identifiers
- 99901227840601842
- Language
- English
- Resource Type
- Journal article