Kim, Jung Hwan Kim, Hyunki Kim, Junhyeong Lee, Hye Jin Jang, Jong Hyun Ahn, Sang Hyun 2024-01-19T22:04:54Z 2024-01-19T22:04:54Z 2021-09-03 2018-07-15 0378-7753 https://pubs.kist.re.kr/handle/201004/121149 In this study, amorphous MoSx catalysts are fabricated on carbon paper using a simple one-step electrodeposition. Varying the deposition potential and time enables the simple control of the morphology and composition of MoSx catalysts, which affects their catalytic activity for hydrogen evolution reaction. The intrinsic activity based on their electrochemical surface area shows a significant relation with S atoms with higher binding energy. The lowest hydrogen evolving overpotential among the electrodeposited MoSx catalysts is - 159.8 mV at a current density of -10 mA cm(-2) with a Tafel slope of 42.3 mV dec(-1). The MoSx formed on carbon paper is directly implemented as a cathode in a proton exchange membrane water electrolyzer, and it displays acceptable cell performance. The following results demonstrate the potential for the use of amorphous MoSx catalysts as an alternative to noble metals in cathode of proton exchange membrane water electrolyzer. English ELSEVIER SCIENCE BV HYDROGEN EVOLUTION REACTION MOS2 ULTRATHIN NANOSHEETS ACTIVE EDGE SITES EFFICIENT ELECTROCATALYST CATALYTIC-ACTIVITY SULFUR-ATOMS DISULFIDE NANOPARTICLES PERFORMANCE GRAPHENE Electrodeposited molybdenum sulfide as a cathode for proton exchange membrane water electrolyzer Article 10.1016/j.jpowsour.2018.04.087 1 JOURNAL OF POWER SOURCES, v.392, pp.69 - 78 JOURNAL OF POWER SOURCES 392 69 78 scie scopus 000435055500009 2-s2.0-85046680487 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article HYDROGEN EVOLUTION REACTION MOS2 ULTRATHIN NANOSHEETS ACTIVE EDGE SITES EFFICIENT ELECTROCATALYST CATALYTIC-ACTIVITY SULFUR-ATOMS DISULFIDE NANOPARTICLES PERFORMANCE GRAPHENE Proton exchange membrane water electrolyzer Hydrogen evolution reaction Electrodeposition Amorphous molybdenum sulfide High binding eergy sulfur