Correction "Three-Dimensional Phosphorus-Doped Graphitic-C3N4 Self-Assembly with NH2-Functionalized Carbon Composite Materials for Enhanced Oxygen Reduction Reaction".

Abstract

Oxygen reduction reaction (ORR) is the major reaction that occurs at the cathodes of fuel cells and metal–air batteries. Development of inexpensive, active, and durable heteroatom doped carbon-based ORR catalysts can lead to significant cost reduction of these electrochemical energy devices, which therefore has recently attracted enormous research attentions. This work reports a three-dimensional porous composite (P-g-C3N4@NH2–CB) for the highly efficient ORR catalyst. P-g-C3N4@NH2–CB was prepared by mixing phosphorus-doped graphitic carbon nitride nanosheets (P-g-C3N4 NSs) with NH2-functionalized carbon black (NH2–CB) via a novel self-assembly approach. The NH2–CB was rationally chosen as the spacer that enables the self-assembled with the P-g-C3N4 NSs driven by the electrostatic interaction. The intercalation of NH2–CB induces the transformation of 2-D P-g-C3N4 NSs into a 3-D composites material of higher surface area, thereby exposing more ORR active sites. The P-g-C3N4@NH2–CB exhibited a remarkable OR...