Polarized 3D Bicontinuous bcu Covalent Organic Frameworks with Accessible Octa-Sites for High-Efficiency Oxygen Electrocatalysis.
Three-dimensional (3D) covalent organic frameworks (COFs) are potential metal-free electrocatalysts for the oxygen reduction reaction (ORR) due to their inherent porosity and potential for fully exposed active sites. However, their practical application is severely hindered by inefficient electron transport along the e...