Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 43, Pages 37750-37759Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b11413
Keywords
defects-rich; SnS2 nanosheets; Pt; synergistic hydrogen evolution; layered metal dichalcogenides
Funding
- National Key Basic Research Program of China (973 Program) [2013CB632900]
- National Natural Science Foundation of China (NSFC) [61390502, 21373068, 11474047]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [51521003]
- Self-Planned Task of State Key Laboratory of Robotics and System (HIT) [SKLRS201607B]
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The electrocatalytic hydrogen evolution reaction (HER) has attracted increasing attention in the field of hydrogen based economy, whereat developing cheap and efficient catalysts to reduce the use of Pt-based catalysts is highly required. Tin disulfide (SnS2) as a new rising star has exhibited intriguing properties in energy storage and conversion applications, while showing slow progress in HER due to the inherent poor activity. Herein, we demonstrate the successful structural engineering and simultaneous integration of trace amount Pt in SnS2 nanosheets via a facile and effective in situ cycling voltammetry activation process, leading to the efficiently synergistic HER. Defect-rich SnS2 nanosheets decorated with a trace amount (0.37 wt %) of Pt exhibit greatly enhanced HER activity due to the synergy between them, revealing low onset potential of 32 mV and overpotential of 117 mV at 10 mA/cm(2), small Tafel slope of 69 mV/dec, and large exchange current density of 394.46 mu A/cm(2). Present work provides an intriguing strategy for developing ultralow loading Pt electrocatalysts with high HER performance.
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