Lithium-sulfur batteries are regarded as one of the most promising high-capacity storage systems due to their high theoretical specific capacity and energy density, as well as the low cost of sulfur and environmental friendliness. However, the shuttle effect of polysulfides in lithium-sulfur batteries It usually leads to a series of problems such as loss of sulfur active substances, rapid capacity decline, and poor cycle life, which seriously hinders the commercial application of Li-S batteries. How to effectively limit the shuttle effect of polysulfide and greatly improve Li-S battery Stability and utilization of active sulfur have become one of the hotspots of current research.
Wang Ruihu, a researcher at the State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, combined with previous research progress in heterogeneous catalysis of porous organic polymers and its characteristics and current status in limiting the shuttle effect of polysulfides, was invited to Functional Materials (Adv. Funct. Mater. 2018, 28, 1707597) published a review paper entitled Porous Organic Polymers for Polysulfide Trapping in Lithium-Sulfur Batteries. The first author of the paper is Ph.D.
This review article first summarizes the research status of lithium-sulfur battery cathode materials, as well as the current problems and some major solutions, focusing on the covalent organic framework, covalent triazine framework, porous organic framework, super crosslinked porous polymerization. Characteristics of porous organic polymers such as imidazole-based ionic polymers and their characteristics and advantages in limiting the shuttle of polysulfides. By summarizing the important achievements of porous organic polymers in limiting the transfer of polysulfide shuttles, The method of improving the performance of lithium-sulfur battery by designing and synthesizing porous organic polymer, and prospects for the application of porous organic polymer in lithium-sulfur battery, this review is of great significance for the development of high-performance lithium-sulfur battery cathode material. .
