MoSx nanowire networks derived from [Mo3S13]2− clusters for efficient electrocatalytic hydrogen evolution
Haoxuan Yu, Junan Pan, Kang Chen, Chao Wang, Zechao Zhuang, Sizhuo Feng, Jianmei Chen, Lingbin Xie, Longlu Wang, Qiang Zhao
Abstract
Precise design and synthesis of sub-nano scale catalysts with controllable electronic and geometric structures are pivotal for enhancing the hydrogen evolution reaction (HER) performance of molybdenum sulfide (MoS2) and unraveling its structure-activity relationship. By leveraging transition molybdenum polysulfide clusters as functional units for multi-level ordering, we successfully designed and synthesized MoSx nanowire networks derived from [Mo3S13]2− clusters via evaporation-induced self-assembly, which exhibit enhanced HER activity attributed to a high density of active sites and dynamic evolution behavior under cathodic potentials. MoSx nanowire networks electrode yields a current density of 100 mA·cm−2 at 142 mV in 0.5 M H2SO4. This work provides an attractive prospect for optimizing catalysts at the sub-nano scale and offers insights into a strategy for designing catalysts in various gas evolution reactions.