Affiliation:
1. CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences 100190 Beijing P. R. China
2. Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy Conversion School of Chemistry and Chemical Engineering Shandong University 250100 Jinan P. R. China
3. University of Chinese Academy of Sciences 100190 Beijing P. R. China
Abstract
AbstractMetal atom catalysts have been among the most important research objects due to their specific physical and chemical properties. However, precise control of the anchoring of metal atoms is still challenging to achieve. Cobalt and iridium atomic arrays formed sequentially ordered stable arrays in graphdiyne (GDY) triangular cavities depending on their intrinsic chemical properties and interactions. The success of this method was attributed to multifunctional integration of GDY, enabling selective growth from one to several atoms and various atomic densities. The bimetallic atom arrays show several advantages resulting from reducibility of acetylene bonds, space limiting effect, incomplete charge transfer between GDY and metal atoms, and sp‐C hybridized triple bond skeleton. This well‐designed system exhibits unprecedented oxygen evolution reaction (OER) performance with a mass activity of 2.6 A mgcat.−1 at a low overpotential of 300 mV, which is 216.6 times higher than the state‐of‐the‐art IrO2 catalyst, and long‐term stability.
Funder
National Natural Science Foundation of China