Siddulu Naidu Talapaneni1,2, Tae Hoon Hwang1,2, Sang Hyun Je1, Onur Büyükçakır1, Jang Wook Choi1, Ali Coskun3,1
1Graduated School of EEWS and KAIST Institute Nano Century, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701 Korea
2these authors contributed equally to this work
3Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
Tóm tắt
AbstractA covalent triazine framework (CTF) with embedded polymeric sulfur and a high sulfur content of 62 wt % was synthesized under catalyst‐ and solvent‐free reaction conditions from 1,4‐dicyanobenzene and elemental sulfur. Our synthetic approach introduces a new way of preparing CTFs under environmentally benign conditions by the direct utilization of elemental sulfur. The homogeneous sulfur distribution is due to the in situ formation of the framework structure, and chemical sulfur impregnation within the micropores of CTF effectively suppresses the dissolution of polysulfides into the electrolyte. Furthermore, the triazine framework facilitates electron and ion transport, which leads to a high‐performance lithium–sulfur battery.
