Plasma-Assisted Synthesis of Self-Supporting Porous CoNPs@C Nanosheet as Efficient and Stable Bifunctional Electrocatalysts for Overall Water Splitting

摘要: The utilization of a highly active and robust bifunctional catalyst for simultaneously producing H2 O2 is still major challenging issue, which vital improving the efficiency overall water splitting. Herein, we employ novel plasma-assisted strategy to rapidly conveniently synthesize three-dimensional (3D) porous composite nanosheets assembled on monodispersed Co nanoparticles encapsulated in carbon framework (CoNPs@C) cloth. Such 3D hierarchical nanosheet improves exposure accessibility sites as well ensures high electroconductibility. Moreover, coating few graphene layers surface catalysts favors improvement catalytic activity. Benefited from these multiple merits, CoNPs@C enable low overpotential 153 mV at −10 mA cm–2 hydrogen evolution reaction. Furthermore, they are also capable catalyzing oxygen reaction with achieve current density...