Nersisyan, Hayk H. Jeong, Junmo Jeong, Kyoung-Jin Suh, Hoyoung Lee, Jong Hyeon 2024-07-18T05:00:11Z 2024-07-18T05:00:11Z 2024-07-18 2024-09 0272-8842 https://pubs.kist.re.kr/handle/201004/150244 Efficient hydrogen production relies on cost-effective and durable non-noble metal electrocatalysts for the hydrogen evolution reaction (HER). In this work, a liquid metal-assisted solid-flame combustion synthesis (SFCS) method was used to create transition metal carbide TMC) nanocrystals with exposed facets. The TMCs include TiC, VC, NbC, TaC, Ta2C, WC, and Mo2C. In acidic solutions, the TMC nanocrystals show enhanced conductivity and superior HER performance, as evidenced by their lower Tafel slope, higher current density, and decreased overpotential. In particular, Mo2C nanocrystals exhibit an overpotential of 95 mV and a Tafel slope of 26 mV dec(-1). These findings highlight a noteworthy improvement over previously reported nanostructures in recent years in terms of the HER properties of Mo2C with particular facets. This improvement is attributed to the unique surface characteristics, such as energy and active sites, which are impacted by various factors and require more investigation to meet the intended goals. English Pergamon Press Ltd. Liquid metal-assisted solid-flame combustion synthesis of transition metal carbide nanocrystals for enhanced hydrogen evaluation reaction Article 10.1016/j.ceramint.2024.05.409 1 Ceramics International, v.50, no.17, pp.31040 - 31050 Ceramics International 50 17 31040 31050 N scie scopus 001261850900001 2-s2.0-85194564495 Materials Science, Ceramics Materials Science Article STABLE ELECTROCATALYST MO2C ELECTROCATALYSTS EVOLUTION EFFICIENT NANOPARTICLES CATALYSTS 1ST-PRINCIPLES Transition metal Nanocrystal Titanium carbide Tantalum carbide Combustion synthesis Hydrogen evaluation