Journal
NANO-MICRO LETTERS
Volume 10, Issue 1, Pages -Publisher
SHANGHAI JIAO TONG UNIV PRESS
DOI: 10.1007/s40820-017-0170-4
Keywords
Co3O4 nanoparticles; Nitrogen-doped carbon; ZIF-67; Catalytic; Oxygen evolution reaction (OER)
Funding
- Scientific and Technological Innovation Platform of Fujian Province [2006L2003]
- Scientific Research Project of Wuyi University [YJ201706]
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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 [GRAPHICS] superior catalytic activities than those derived from the rhombic dodecahedron and hollow spherical ZIF-67. The former M-Co3O4/NPC composite displayed a small overpotential 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.
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