Akademik Veri Yönetim Sistemi
JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI, 2025 (ESCI, TRDizin)
Hydrogen technology, which plays a strategic role in achieving sustainable development goals, offers an important low-carbon option for reducing greenhouse gas emissions. Green hydrogen, in particular, plays a key role in the transition to net-zero emissions targets. In this study, electrocatalysts were synthesized by loading nickel sulfide and borophene materials onto an activated carbonsupported electrode surface, and their electrochemical performances for the hydrogen evolution reaction (HER) were comparatively investigated. The XRD pattern of activated carbon revealed the presence of graphitic layers and the amorphous character of the material. The average pore diameter is approximately 1.44 nm, and it has been determined that the pore distribution is largely concentrated in the micropore region. The characteristic peaks observed in the XRD pattern of NiS synthesized by the hydrothermal method correspond to the Millerite (NiS) phase. Most of the XRD diffraction peaks obtained for borophene synthesized by the flaking method are consistent with beta-rhombohedral boron. Among the synthesized electrocatalysts, the borophen-doped nickel sulfide electrocatalyst (80AC18NiS2B) exhibited an overpotential of 421 mV at 10 mA.cm(-2), 43.47% current increase after the stability test, and improved HER kinetics with significant electrochemical activation. This study demonstrates that nickel sulfide and borophene supported on activated carbon electrocatalysts can offer effective and long-lasting alternatives for sustainable hydrogen production.