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Novel Co3O4 Nanoparticles/Nitrogen-Doped Carbon Composites with Extraordinary Catalytic Activity for Oxygen Evolution Reaction (OER).

ABSTRACT: Herein, Co3O4 nanoparticles/nitrogen-doped carbon (Co3O4/NPC) composites with different structures were prepared via a facile method. Structure control was achieved by the rational morphology design of ZIF-67 precursors, which were then pyrolyzed in air to obtain Co3O4/NPC composites. When applied as catalysts for the oxygen evolution reaction (OER), the M-Co3O4/NPC composites derived from the flower-like ZIF-67 showed superior catalytic activities than those derived from the rhombic dodecahedron and hollow spherical ZIF-67. The former M-Co3O4/NPC composite displayed a small over-potential of 0.3 V, low onset potential of 1.41 V, small Tafel slope of 83 mV dec-1, and a desirable stability. (94.7% OER activity was retained after 10 h.) The excellent performance of the flower-like M-Co3O4/NPC composite in the OER was attributed to its favorable structure.

SUBMITTER: Yang X 

PROVIDER: S-EPMC6199064 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Novel Co<sub>3</sub>O<sub>4</sub> Nanoparticles/Nitrogen-Doped Carbon Composites with Extraordinary Catalytic Activity for Oxygen Evolution Reaction (OER).

Yang Xiaobing X   Chen Juan J   Chen Yuqing Y   Feng Pingjing P   Lai Huixian H   Li Jintang J   Luo Xuetao X  

Nano-micro letters 20171114 1

Herein, Co<sub>3</sub>O<sub>4</sub> nanoparticles/nitrogen-doped carbon (Co<sub>3</sub>O<sub>4</sub>/NPC) composites with different structures were prepared via a facile method. Structure control was achieved by the rational morphology design of ZIF-67 precursors, which were then pyrolyzed in air to obtain Co<sub>3</sub>O<sub>4</sub>/NPC composites. When applied as catalysts for the oxygen evolution reaction (OER), the M-Co<sub>3</sub>O<sub>4</sub>/NPC composites derived from the flower-like ZIF  ...[more]

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