Open AccessLithium sulfur battery cathode materials based on COFs ordering
Author(s) -
Hong Ping Lin,
Junli Zhang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/781/4/042057
Subject(s) - cathode , battery (electricity) , lithium–sulfur battery , sulfur , materials science , lithium (medication) , composite number , chemical engineering , nanotechnology , composite material , electrical engineering , engineering , physics , medicine , power (physics) , quantum mechanics , endocrinology , metallurgy
In recent years, lithium-sulfur batteries and fuel cells, as a kind of new energy which is expected to replace traditional fossil fuels, have attracted people’s attention. At present, the “shuttle effect” of lithium-sulfur batteries is one of the key factors limiting the performance and application of lithium-sulfur batteries. It is urgent to find a suitable positive electrode composite material to suppress the “shuttle effect”. Covalent organic compounds (COFs) have been considered as ideal potential cathode composites for the anchors of sulfur and lithium compounds because of their regularized structure and polar functional groups. This paper mainly discusses the structure order of COF material, and gives the synthesis method of this kind of porous polymer material. The method of COFs synthesis is to design and assemble 2-D and 3-D COFs materials with different topological structures by choosing different geometrically constructed monomers and linking methods. Lithium-sulfur battery is a kind of battery with high energy density and theoretical capacity. The key to solve the shuttle effect is to find a suitable cathode composite material. Based on the order of COFs material structure, the feasibility and advantages of COFs as cathode material for lithium sulfur batteries were proposed.