Low-cost, highly efficient catalysts for hydrogen evolution reaction (HER) are very important to advance energy economy based on clean hydrogen gas. Intensive studies on two-dimensional molybdenum disulfides (2D MoS₂) have been conducted due to their remarkable catalytic properties. However, most of the reported syntheses are time consuming, complicated and less efficient. The present work demonstrates the production of MoS₂/graphene catalyst via an ultra-fast (60 s) microwave-initiated approach. High specific surface area and conductivity of graphene delivers a favorable conductive network for the growth of MoS₂ nanosheets, along with rapid charge transfer kinetics. As-produced MoS₂/graphene nanocomposites exhibit superior electrocatalytic activity for the HER in acidic medium, with a low onset potential of 62 mV, high cathodic currents and a Tafel slope of 43.3 mV/decade. Beyond excellent catalytic activity, MoS₂/graphene reveals long cycling stability with a very high cathodic current density of around 1000 mA cm⁻² at an overpotential of 250 mV. Moreover, the MoS₂/graphene-catalyst exhibits outstanding HER activities in a temperature range of 30 to 120°C with low activation energy of 36.51 kJ mol⁻¹, providing the opportunity of practical scalable processing.

低成本，高效的氢气析出反应（HER）催化剂对于提高基于清洁氢气的能源经济性非常重要。由于二维二硫化钼（2D MoS ₂）具有卓越的催化性能，因此对其进行了深入研究。然而，大多数报道的合成是费时，复杂且效率较低的。本工作证明了通过超快（60 s）微波引发的方法生产MoS ₂ /石墨烯催化剂。石墨烯的高比表面积和电导率为MoS ₂纳米片的生长提供了良好的导电网络，并具有快速的电荷转移动力学。成品MoS ₂石墨烯/石墨烯纳米复合材料在酸性介质中对HER表现出优异的电催化活性，起始电位低至62 mV，阴极电流高，Tafel斜率为43.3 mV /十倍。MoS ₂ /石墨烯不仅具有出色的催化活性，而且在250 mV的超电势下显示出长的循环稳定性，并具有约1000 mA cm ^-2的非常高的阴极电流密度。而且，MoS ₂ /石墨烯催化剂在30至120℃的温度范围内表现出优异的HER活性，并且具有36.51kJ mol ^-1的低活化能，从而提供了实用的可扩展处理的机会。