Laser solid-phase synthesis of graphene shell encapsulated HEA nanoparticles on a 3D porous carbon support and their catalytic performance. (IMAGE)
Caption
Laser solid-phase synthesis of graphene shell encapsulated HEA nanoparticles on a 3D porous carbon support and their catalytic performance. a. Illustrative diagram of the laser synthesis procedure, where the precursor salts adsorbed on 3D porous graphene structure supported by carbon paper, followed by pulsed laser irradiation to produce HEA nanoparticles loaded on graphene structure; b. Schematic diagram of the laser synthesis mechanism, involving laser-induced thermal decomposition of precursor salts, hot electron (from laser emission of graphene) reduction process and metal aggregation and splitting process; c-f. TEM images and the STEM elemental mappings of the laser-synthesized HEA nanoparticles (scale bar = 50 nm), in which Figure e exhibits a HEA nanoparticle being embraced by several layers of graphene forming graphene shell-encapsulated HEA NP; g-h. OER performance of the laser-synthesized HEA NPs on carbon support in 1 M KOH electrolyte, showing that LSV plots and long-term stability at 10 mA/cm−2, compared with the commercial RuO2 catalysts.
Credit
by Yuxiang Liu, Jianghuai Yuan, Jiantao Zhou, Kewen Pan, Ran Zhang, Rongxia Zhao, Lin Li, Yihe Huang, Zhu Liu
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CC BY