3D Melamine Sponge-Derived Cobalt Nanoparticle-Embedded N-Doped Carbon Nanocages as Efficient Electrocatalysts for the Oxygen Reduction Reaction.

ABSTRACT: The large-scale and controllable synthesis of novel N-doped three-dimensional (3D) carbon nanocage-decorated carbon skeleton sponges (Co-NCMS) is introduced. These Co-NCMS were highly active and durable non-noble metal catalysts for the oxygen reduction reaction (ORR). This hybrid electrocatalyst showed high ORR activity with a diffusion-limiting current of 5.237 mA·cm^-2 in 0.1 M KOH solution through the highly efficient 4e^- pathway, which was superior to that of the Pt/C catalyst (4.99 mA·cm^-2), and the ORR Tafel slope is ca. 67.7 mV·dec^-1 at a high potential region, close to that of Pt/C. Furthermore, Co-NCMS exhibited good ORR activity in acidic media with an onset potential comparable to that of the Pt/C catalyst. Most importantly, the prepar

SUBMITTER: Zhang H 

PROVIDER: S-EPMC8358961 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature