Atomically Dispersed Sn on Core‐Shell MoS 2 Nanoreactors as Mott‐Schottky Phase Junctions for Efficient Electrocatalytic Hydrogen Evolution

Abstract The electrocatalytic hydrogen evolution reaction (HER) plays a pivotal role in electrochemical energy conversion and storage. However, traditional HER catalysts still face significant challenges, including limited activity, poor acid resistance, and high costs. To address these issues, a hollow core‐shell structured 2H@1T‐MoS 2 ‐Sn 1 nanoreactor is designed for acidic HER, where Sn single atoms are anchored on the shell of 2H@1T‐MoS 2 Mott‐Schottky phase junction. The 2H@1T‐MoS 2 ‐Sn 1 catalyst demonstrates exceptional HER performance, achieving an ultralow overpotential of 9 mV at 10 mA cm −2 and a Tafel slope of 16.3 mV dec −1 in acidic media—the best performance reported to date among MoS 2 ‐based…

• NN
  National Natural Science Foundation of China

  Awards: 22279139, 62227815, 22372001
• CA
  Chinese Academy of Sciences
• AA
  Anhui Agricultural University

  Award: rc382108
• NS
  National Synchrotron Radiation Laboratory

  Award: BL11U
• SI
  Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences