储能科学与技术 ›› 2017, Vol. 6 ›› Issue (3): 522-528.doi: 10.12028/j.issn.2095-4239.2017.0024

• 特约文章 • 上一篇    下一篇

应用于锂硫电池的原位紫外光谱分析测试

许  娜，王梦凡，钱  涛，晏成林   

  1. 苏州大学能源与材料创新研究院，苏州大学物理·光电与能源学部，江苏省先进碳材料与可穿戴能源技术重点实验室，江苏 苏州 215006
  • 收稿日期:2017-03-13 修回日期:2017-03-30 出版日期:2017-05-01 发布日期:2017-05-01
  • 通讯作者: 晏成林，教授，从事高性能锂离子电池及其表界面研究，E-mail：c.yan@suda.edu.cn。
  • 作者简介:许娜（1992—），女，科研助理，研究方向为锂硫电池，E-mail：xunane@foxmail.com
  • 基金资助:
    国家优秀青年科学基金项目（51622208）。

Application of in-situ UV/vis analysis in lithium-sulfur batteries

XU Na, WANG Mengfan, QIAN Tao, YAN Chenglin   

  1. Soochow Institute for Energy and Materials InnovationS & College of Physics, Optoelectronics and Energy, Soochow University, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou 215006, Jiangsu, China
  • Received:2017-03-13 Revised:2017-03-30 Online:2017-05-01 Published:2017-05-01

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摘要： 锂硫电池因其成本低、循环寿命长、能量密度高以及环境友好等特点，成为了最具有前途的下一代能源系统。然而，诸多问题限制了锂硫电池的实际应用，如因高溶解度的长链多硫化物所引起的穿梭效应导致容量的极速衰减以及较低的库仑效率。紫外光谱分析可以快速、准确地测定循环过程中产生的多硫化物，因此在锂硫电池分析中有着重要的作用。本文阐述了最新应用于锂硫电池的原位紫外分析技术及对锂硫电池充放电过程中产生的多硫化物定性及定量的分析方法。

Abstract:

 lithium-sulfur (Li-S) batteries with low cost, long life, high energy, and environmental benignity promise great potential to be the next-generation high-energy system. However, the practicality of Li-S technology is hindered by various obstacles, such as rapid capacity fading along with low coulombic efficiency arising from high solubility of long-chain lithium polysulfides and the shuttle effect in lithium sulfur battery. During the cycling, the generated polysulfides can be measured quickly and accurately by UV/vis analysis, which plays an important role in the analysis of Li-S batteries. This paper mainly introduced the newest applications of in-situ UV/vis analysis in Li-S batteries as well as the qualitative and quantitative analysis of the generated polysulfides during charge and discharge process.