Work

Selective synthesis of hierarchical nanoporous Mo–Ni intermetallic compounds as hydrogen evolution reaction catalysts via partial liquid metal dealloying

Year: 2026

Type: article

Abstract: The present work demonstrates the selective synthesis of bicontinuous nanoporous Mo–Ni intermetallic compounds via partial liquid metal dealloying (PLMD). This innovative technique exploits a phase equilibrium between a liquid bath and solid ligaments to realize a self-limiting leaching process such that Ni dissolution is spontaneously terminated at a desired composition. Using this approach, bicontinuous porous architectures were produced for all binary intermetallic compounds in the Mo–Ni phase diagram. Electrochemical evaluations revealed that porous Mo 7 Ni 7 exhibited the highest activity when employed as a catalyst for the hydrogen evolution reaction. A novel two-step PLMD process was used to construct a hierarchically porous Mo 7 Ni 7 structure showing significantly enhanced catalytic performance as a result of ligament refinement.

Source: Scripta Materialia

DOI: 10.1016/j.scriptamat.2026.117537

Authors: Takeshi Wada, Yuki Minabe, Kiichi Kaji, Ruirui Song, Pierre-Antoine Geslin, Hidemi Kato