Congwei Wang

TL;DR: In this article, a hierarchical porous carbon framework with macroporous walls sandwiched by micro/mesoporous activated carbon covering graphene flakes was synthesized by template-free low-temperature activation of the cellulose/graphene hybrids at 650 °C.

TL;DR: In this paper, a two-dimensional hetero-hybrid of atomic Fe, g-C3N4 and graphene was developed for superior electrocatalytic activity in the oxygen reduction reaction.

TL;DR: In this article, the hierarchical atomic Fe/carbon material with 0.53 atom % Fe exhibited superior oxygen reduction reaction (ORR) performance to Pt-C (20 wt % Pt) with 40 mV more positive onset potential, larger current density and stronger methanol-tolerant capability.

TL;DR: In this paper, a scalable electrochemical approach to synthesize few-layer graphene flakes and isolated Fe atoms at the same time was demonstrated, and it was found that graphite could be expanded in FeCl4-based ionic liquid at a low potential of 2.5 V.

TL;DR: A one-pot pyrolysis approach toward the preparation of heteroatom-doped hierarchical porous three-dimensional graphene frameworks decorated with multilayer graphene shell-coated cobalt oxide nanocrystal shows a great potential of scalable synthesis of high-performance practical electrocatalyst for metal-air batteries and fuel cells at a low cost.