학술논문
锂硫电池正极复合材料研究现状 / Recent progress of sulfur composites as cathode materials for lithium sulfur batteries
Document Type
Academic Journal
Source
化工进展 / Chemical Industry and Engineering Progress. (5):1340-1344
Subject
Language
Chinese
ISSN
1000-6613
Abstract
锂硫电池由于其高理论能量密度（2600W?h/kg）而受到了广泛的关注，是极具应用前景的电池体系。硫基正极材料作为锂硫电池的重要组成部分，是提高电池性能的关键。然而锂硫电池还存在一些问题，如硫的利用率低及正极结构的稳定性差等。本文综述了近几年锂硫电池硫正极复合材料的研究现状，分别从硫/碳复合、硫/导电聚合物复合、硫/氧化物复合3个方面进行介绍，指出了未来锂硫电池正极材料要注意结合硫/导电聚合物及硫/氧化物的优势并注重材料结构的设计，向核壳或类核壳结构方向发展的趋势，同时还要提高载硫量，提高循环稳定性，以获得高性能的锂硫电池。
As a promising battery system,lithium-sulfur battery with high theoretical energy density (2600W?h/kg) has attracted great attention. As one of the essential ingredients for lithium-sulfur batteries,sulfur cathode material is the key to improve the performance of batteries. However,there are some serious and unavoidable problems for lithium-sulfur battery,such as low utilization efficiency of sulfur in cathode and poor stability of electrode structure. In this review,the recent progress of sulfur composites as cathode materials for lithium-sulfur batteries is introduced. Cathode materials are divided into three kinds of composites,such as sulfur/carbon,sulfur/polymer and sulfur/oxide composite materials,which are discussed respectively. It is pointed out that the coming development of cathode materials for lithium-sulfur batteries should be focused on the combination of advantages of sulfur/polymer and sulfur/oxide composite materials,and the design of material structure,such as core-shell or core-shell-like structure for cathode materials. At the same time,high sulfur loading and high cycle stability will be good for the performance improvement of lithium-sulfur batteries.
As a promising battery system,lithium-sulfur battery with high theoretical energy density (2600W?h/kg) has attracted great attention. As one of the essential ingredients for lithium-sulfur batteries,sulfur cathode material is the key to improve the performance of batteries. However,there are some serious and unavoidable problems for lithium-sulfur battery,such as low utilization efficiency of sulfur in cathode and poor stability of electrode structure. In this review,the recent progress of sulfur composites as cathode materials for lithium-sulfur batteries is introduced. Cathode materials are divided into three kinds of composites,such as sulfur/carbon,sulfur/polymer and sulfur/oxide composite materials,which are discussed respectively. It is pointed out that the coming development of cathode materials for lithium-sulfur batteries should be focused on the combination of advantages of sulfur/polymer and sulfur/oxide composite materials,and the design of material structure,such as core-shell or core-shell-like structure for cathode materials. At the same time,high sulfur loading and high cycle stability will be good for the performance improvement of lithium-sulfur batteries.