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초록· 키워드
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Molybdenum disulfide, a two-dimensional graphene-like material, is an alternative candidate catalyst to the expensive platinum due to its lower cost and abandance on earth. However, the conductivity of molybdenum disulfide needs to be improved to have excellent electrocatalytic behaviors. Herein, we report an efficient molybdenum disulfide supported by activated carbon for the hydrogen evolution reaction through the hydrothermal method. The as-prepared activated carbon molybdenum disulfide (AC-MoS<sub>2</sub>) composite presents a small overpotential (−0.16 V), which is very much smaller in comparison to that for the precursor MoS<sub>2</sub> without AC (−0.31 V) at the same current density of −10 mAcm<sup>−2</sup>. The composite also exhibited high stability at 5000 cycles and excellent durability after 24 hours. The AC-MoS2 composite demonstrated its smallest resistance (23 Ω) at high frequency (3000 kHz) in comparison with the precursor (9038 Ω), proving that the conductivity of the as-prepared composite is increased. The good performance of AC-MoS<sub>2</sub> is as- signed to the synergic effect of AC and MoS<sub>2</sub> which has a positive effect on enhancing the catalytic activity for the hydrogen evolution reaction.
목차
I. Introduction
II. Experimental
III. Results and Discussion
IV. Conclusions
REFERENCES
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