Mesoporous iron sulfide nanoparticles anchored graphene sheet as an efficient and durable catalyst for oxygen reduction reaction
| Autor: | Nam Hoon Kim, Joong Hee Lee, Duy Thanh Tran, Jagadis Gautam, Thangjam Ibomcha Singh |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Sulfide Oxide Energy Engineering and Power Technology chemistry.chemical_element Iron sulfide 02 engineering and technology 010402 general chemistry Electrocatalyst 01 natural sciences Catalysis law.invention chemistry.chemical_compound law Electrical and Electronic Engineering Physical and Theoretical Chemistry chemistry.chemical_classification Renewable Energy Sustainability and the Environment Graphene 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical engineering Reversible hydrogen electrode 0210 nano-technology Platinum |
| Zdroj: | Journal of Power Sources. 427:91-100 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2019.04.075 |
| Popis: | The fabrication of low-cost, highly efficient, and earth-abundant electrocatalysts for oxygen reduction reaction is critical to produce clean and sustainable fuel through an electrochemical process. Herein, a facile hydrothermal technique is used for the synthesis of iron sulfide/graphene hybrid for oxygen reduction reaction. Morphological analysis of the resulting catalyst reveals that iron sulfide nanoparticles are homogeneously embedded on the surface of reduced graphene oxide sheet. Electrochemical analysis of the hybrid exhibits remarkably improved catalytic performance for oxygen reduction reaction while achieving half wave potential of +0.845 V and onset potential of +1.0 V (versus reversible hydrogen electrode), along with outstanding long-term stability under alkaline conditions. In addition, the methanol tolerance ability and stability of the hybrid exceed the benchmark platinum/carbon product in alkaline condition. These outstanding activities of the hybrid are attributed to the merits of the interaction between iron sulfide nanoparticles and graphene. The results suggest the practicability of metal sulfide as a low cost and efficient alternative catalyst of platinum for oxygen reduction reaction. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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