B-doped carbon enclosed Ni nanoparticles: A robust, stable and efficient electrocatalyst for hydrogen evolution reaction

Nanocrystalline cobalt–nickel–boron (metal boride) catalysts for efficient hydrogen production from the hydrolysis of sodium borohydride

“…While these noble-metal-based catalysts provide high activity in all environments including acidic and alkaline environments, they can also maintain their chemical stability. However, they are very expensive due to their rarity which is a major disadvantage and that limits commercialization [10]. Recently, to obtain pure hydrogen, some non-noble metals and their alloys have been identified to catalyze the hydrolysis of NaBH4, including LaNi4.5T0.5 (T = Mn, Cr, Co, Fe, Cu, Al), nickel and cobalt, nickel boride and cobalt boride [11][12][13].…”

Producing green hydrogen in an efficient way using a nexus of a waste-biomass derived catalyst and a cost-effective & scalable electrode platform

“…9B were drawn. 53 The Tafel slope is a crucial parameter for determining the catalytic activity of an electrocatalyst for the HER. The measured Tafel slopes are 110, 220, and 249 mV decade −1 , respectively, for Ni@NC-800, Ni@NC-700, and Ni@NC-600.…”

Emerging transition metal and carbon nanomaterial hybrids as electrocatalysts for water splitting: a brief review

“…Hence, this field offers vast opportunities to develop novel and efficient HER catalyst materials. A representative work was done by Yusuf et al , 232 they fabricated Ni nanoparticles enclosed in boron doped carbon (Ni@B-C) via one pot chemical reduction method followed by pyrolysis at different temperatures, and evaluated the HER performance in alkaline medium. The results revealed that the material obtained at 500 °C (Ni@B-C 500) exhibits the best HER activity by showing an overpotential of 176 mV to attain the current density of 10 mA cm −2 in 1.0 M KOH solution, along with that of 188, 304, and 556 mV for Ni@B-C 400, Ni@B-C 600, and Ni@C 500, respectively, and its Tafel slope of 78 mV dec −1 was evidently lower than that of Ni@B-C 400 (87 mV dec −1 ), Ni@B-C 600 (128 mV dec −1 ) and Ni@C 500 (231 mV dec −1 ).…”