Highly Active and Stable Hybrid Catalyst of Cobalt-Doped FeS 2 Nanosheets–Carbon Nanotubes for Hydrogen Evolution Reaction
National Taiwan Normal University · Institute of Atomic and Molecular Sciences, Academia Sinica · +3 more institutions
Abstract
Hydrogen evolution reaction (HER) from water through electrocatalysis using cost-effective materials to replace precious Pt catalysts holds great promise for clean energy technologies. In this work we developed a highly active and stable catalyst containing Co doped earth abundant iron pyrite FeS(2) nanosheets hybridized with carbon nanotubes (Fe(1-x)CoxS(2)/CNT hybrid catalysts) for HER in acidic solutions. The pyrite phase of Fe(1-x)CoxS(2)/CNT was characterized by powder X-ray diffraction and absorption spectroscopy. Electrochemical measurements showed a low overpotential of ∼0.12 V at 20 mA/cm(2), small Tafel slope of ∼46 mV/decade, and long-term durability over 40 h of HER operation using bulk quantities…
Citation impact
- FWCI
- 39.79
- Percentile
- 100%
- References
- 50
Authors
14- DWDi‐Yan WangCorresponding
National Taiwan Normal University, Institute of Atomic and Molecular Sciences, Academia Sinica, Stanford University
- MGMing Gong
Stanford University
- HCHung‐Lung Chou
National Taiwan University of Science and Technology
- CPChun‐Jern Pan
National Taiwan University of Science and Technology
- HCHsin‐An Chen
National Taiwan University
Topics & keywords
- Catalysis
- Overpotential
- Tafel equation
- Chemistry
- Carbon nanotube
- Electrocatalyst
- Cobalt
- Chemical engineering
- Industry, innovation and infrastructure