4.7 Article

Oriented arrays of Co3O4 nanoneedles for highly efficient electrocatalytic water oxidation

Journal

CHEMICAL COMMUNICATIONS
Volume 55, Issue 27, Pages 3971-3974

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cc00791a

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Funding

  1. National Natural Science Foundation of China [21722103, 21720102002, 21673140]
  2. Shanghai Basic Research Program [16JC1401600]
  3. SJTU-MPI partner group
  4. Shanghai Rising-Star Program [16QA1402100]

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We described an effective way to generate a Co3O4 mesocrystal array with well-developed porosity, simply by uniting a coupled interface with hydrazine treatment. Due to the fast electron transfer and sufficient active sites, the Ti mesh-supported Co3O4 nanoneedles electrode could provide a current density of 49.9 mA cm(-2) at 570 mV OER overpotential and has exceptionally high stability.

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