Cobalt-modified covalent organic framework as a robust wateroxidation electrocatalyst

TitleCobalt-modified covalent organic framework as a robust wateroxidation electrocatalyst
Publication TypeJournal Article
Year of Publication2016
AuthorsAiyappa, HBarike, Thote, J, Shinde, DBalaji, Banerjee, R, Kurungot, S
JournalChemistry of Materials
Volume28
Issue12
Pagination4375-4379
Date PublishedJUN
ISSN0897-4756
Abstract

The development of stable, efficient oxygen evolution reaction (OER) catalyst capable of oxidizing water is one of the premier challenges in the conversion of solar energy to electrical energy, because of its poor kinetics. Herein, a bipyridine-containing covalent organic framework (TpBpy) is utilized as an OER catalyst by way of engineering active Co(II) ions into its porous framework. The as-obtained Co-TpBpy retains a highly accessible surface area (450 m(2)/g) with exceptional stability, even after 1000 cycles and 24 h of OER activity in phosphate buffer under neutral pH conditions with an overpotential of 400 mV at a current density of 1 mA/cm(2). The unusual catalytic stability of Co-TpBpy arises from the synergetic effect of the inherent porosity and presence of coordinating units in the COF skeleton.

DOI10.1021/acs.chemmater.6b01370
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

9.407

Divison category: 
Physical and Materials Chemistry