Self-supporting nanoporous Ni/metallic glass composites with hierarchically porous structure for efficient hydrogen evolution reaction

Searching for free-standing and cost-efficient hydrogen evolution reaction (HER) electrocatalysts with high efficiency and excellent durability remains a great challenge for the hydrogen-based energy industry. Here, we report fabrication of a unique hierarchically porous structure, i.e., nanoporous Ni (NPN)/metallic glass (MG) composite, through surface dealloying of the specially designed Ni40Zr40Ti20 MG wire. This porous composite is composed...