Abstract
Highly efficient catalysts for electrolysis of water are crucial to the development of hydrogen energy which is helpful to carbon neutralization. Recently, high temperature shock (HTS), with advantage of rapid speed, universality and scalable production, has been a promising method in synthesis of nanomaterials. In this paper, HST was used to treat low Pt loading Mo6S8 for enhanced water splitting performance. Impressively, the optimized MoS2/MoO2/Mo6S8 nano-composite with low Pt mass loading (∼4%) displays well hydrogen evolution reaction (HER) electrochemical performance. The overpotential is 124 mV to reach 10 mA/cm2 and the corresponding Tafel slope is 88 mV/dec in acidic electrolyte. Its mass activity is 6.2 mA/µgPt at -124 mV vs. RHE, which is almost 2 times relative to 20% Pt/C. Moreover, it presents distinguished stability even after 2000 cycles. This work will broaden the way of catalysts preparation and the application of hydrogen evolution.
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