title: Elemental-Sulfur-Mediated Facile Synthesis of a Covalent Triazine Framework for High-Performance Lithium-Sulfur Batteries.
abstract: A 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.
authors.affiliation: Graduated School of EEWS and KAIST Institute Nano Century, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea.
authors.forename: Siddulu Naidu
authors.initials: SN
authors.lastname: Talapaneni
authors.affiliation: Graduated School of EEWS and KAIST Institute Nano Century, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea.
authors.forename: Tae Hoon
authors.initials: TH
authors.lastname: Hwang
authors.affiliation: Graduated School of EEWS and KAIST Institute Nano Century, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea.
authors.forename: Sang Hyun
authors.initials: SH
authors.lastname: Je
authors.affiliation: Graduated School of EEWS and KAIST Institute Nano Century, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea.
authors.forename: Onur
authors.initials: O
authors.lastname: Buyukcakir
authors.affiliation: Graduated School of EEWS and KAIST Institute Nano Century, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea. jangwookchoi@kaist.ac.kr.
authors.forename: Jang Wook
authors.initials: JW
authors.lastname: Choi
authors.affiliation: Graduated School of EEWS and KAIST Institute Nano Century, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea. coskun@kaist.ac.kr.|Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea. coskun@kaist.ac.kr.
authors.forename: Ali
authors.identifier: http://orcid.org/0000-0002-4760-1546
authors.initials: A
authors.lastname: Coskun
keywords: cathode materials; electrochemistry; lithium-sulfur batteries; microporous materials; sulfur