Kim, Do Hoon Koh, Jae Seon Lee, Sehyeok Jaewon, Kirk Jeong, Hyang soo Kim, Yongmin Kim, Min Soo 2025-08-20T03:07:57Z 2025-08-20T03:07:57Z 2025-08-20 2025-08 0360-3199 https://pubs.kist.re.kr/handle/201004/152961 This research explores the formic acid-enhanced hydrolysis of solid-state sodium borohydride (SBH) in aqueous environments as a method for generating hydrogen suitable for high-power fuel cell applications. Conducted at moderate temperatures (60-90 degrees C), the reactions effectively suppress the formation of carbon monoxide, a known contaminant for fuel cell catalysts. The study systematically investigates how variations in acid feed concentration, reactant temperature, and the quantity of formic acid influence reaction kinetics and product distribution. To further elucidate the chemical dynamics, solid-state 11B NMR spectroscopy was employed to characterize the resulting boron-containing residues. Across all tested conditions, both the injection rate of the acid and the operating temperature were found to significantly impact the rate of hydrogen evolution. Notably, higher temperatures compensated for reduced acid quantities, enabling consistently high conversion efficiencies and reinforcing the temperature-dependent nature of SBH hydrolysis. English PERGAMON-ELSEVIER SCIENCE LTD Performance of hydrogen generation system with acid accelerated hydrolysis of solid-state sodium borohydride Article 10.1016/j.ijhydene.2025.150444 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.157 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 157 N scie scopus 001539023900001 2-s2.0-105010308183 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article FUEL DECOMPOSITION CATALYST STORAGE ENERGY Acid-accelerated hydrolysis Formic acid Hydrogen generation Sodium borohydride(SBH)