▎ 摘 要
The composition and structure were studied using a range of material characterization techniques. Through d-spacing modification and dynamic self-assembly of the structures of these molecules, ideal lithium ion-transfer aggregation formed between each monolayer. Rapid ion/electron transfer and maintenance of the structural integrity during repeated ion insertion/extraction occurred due to the lack of a covalent interaction force among the assembled structures. This led to voltage capacity improvement to 1521 mA h(-1) after 100 cycles for NG-N-2, and current potential HOMO energy as 6.091 eV. In addition, the doping level, i.e., number of N atoms, had a significant influence on the molecular self-assembled structures through hierarchical self-assembly. The double nitrogen doped nano-graphen d-space between the nano-sheets as 3.6 similar to 3.8. Moreover, the N-doping site of nano-graphene was defined and the relationship between performance and structure was determined.