An Insoluble Amino-Functionalized Hexaazatriphenylene as Stable Organic Cathode in Lithium-Ion Batteries

Organic electrode materials have received increasing attention in rechargeable batteries due to their earth abundance and variable structures. However, the practical application of most organic is limited by high solubility electrolyte. Herein, an insoluble amino-functionalized hexaazatriphenylene (defined as HATN-[NH2]3) electrolyte developed stable cathode material for lithium-ion (LIBs). The resultant HATN-[NH2]3 achieves a reversible capacity 192.5 mAh g−1 at current density 0.05 A g−1. Remarkably, exhibits almost no fade after 500 cycles 0.5 stability can be ascribed property caused hydrogen bonds between molecules. Moreover, functional theory calculations suggest that amino functionalization reduce band gap HATN, favor improved conductivity thus enhanced rate performance. This work offers simple but efficient strategy develop LIBs beyond.