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There are many challenges associated with the fabrication of efficient, inexpensive, durable and very stable nonprecious metal catalysts for the hydrogen evolution reaction (HER). In this study, we have designed a facile strategy by tailoring the concentration of precursors to successfully obtain nickel–cobalt bimetallic sulfide (NiCo2S4) using a simple hydrothermal method. The morphology of the newly prepared NiCo2S4 comprised a mixture of microparticles and nanorods, which were few microns in dimension. The crystallinity of the composite sample was found to be excellent with a cubic phase. The sample that contained a higher amount of cobalt compared to nickel and produced single-phase NiCo2S4 exhibited considerably improved HER performance. The variation in the salt precursor concentration during the synthesis of a material is a simple methodology to produce a scalable platinum-free catalyst for …
Royal Society of Chemistry
Publication date: 
1 Jan 2020

Umair Aftab, Aneela Tahira, Raffaello Mazzaro, Vittorio Morandi, Muhammad Ishaq Abro, Muhammad Moazam Baloch, Cong Yu, Zafar Hussain Ibupoto

Biblio References: 
Volume: 10 Issue: 37 Pages: 22196-22203
RSC Advances