Preparation of triphenyl-amine graphdiyne with concomitant assembled morphology and its application for lithium-ion storage

Abstract

Herein, a gas–liquid interfacial approach is developed for preparing triphenyl-amine graphdiyne (TPN-GDY). The nitrogen heteroatoms are included in a form of tertiary amine substituted by three benzene rings, which can efficiently adjust the bonding situation of carbon in TPN-GDY and expand the size of the pores distributing on the carbon plane. The aggregating morphology of TPN-GDY can be well tuned. Scanning electron microscope and transmission electron microscope images show concomitant morphology containing nano particles and leaf-like structure are formed. The microscopic morphology and ratio of these two components can be tuned through simply adjusting the reaction conditions. Interestingly, continuous deposition of TPN-GDY powder from gas/liquid reaction interface is observed, which can be ascribed to the tunable aggregation of TPN-GDY during the reaction process. The as-prepared TPN-GDY powder shows high surface area, multi-level porous structure and good conductivity compare to TPN-GDY prepared on classical solid substrates. As a result, good electrochemical performances in lithium-ion batteries are exhibited, include high reversible capacity, good rate performance, and long cycling stability.