A dual templating route to three-dimensionally ordered mesoporous carbon nanonetworks: tuning the mesopore type for electrochemical performance optimization

摘要: To well understand the effect of mesopore type ordered mesoporous carbons (OMCs) on enhancing energy storage and conversion is still a great challenge because extreme difficulties in exploring new methods to create OMCs with different types mesopores. Herein, we develop an intriguing dual-templating co-assembly/hydrothermal approach realize nanostructure engineering various mesopores from three-dimensional (3D) cubic (OMCNW-c) 2D hexagonal (OMCNW-h) 0D carbon nanospheres (OMC-S) for their electrochemical performance optimization supercapacitors oxygen reduction reactions (ORRs). The results show that OMCNW-c exhibits specific capacitance 215 F g−1 at 0.5 A g−1, higher than those OMCNW-h OMC-S, good capability excellent cycling no capacity fading even after 10 000 cycles. Furthermore, shows much better electrocatalytic activity ORR OMC-S. present investigations give strong evidence tuning can contribute another important factor catalysis storage. We believe synthetic strategy nanomaterials desirable structure morphology open future novel materials greatly improved catalytic applications.