A Scaled-Up Lithium (Ion)-Sulfur Battery: Newly Faced Problems and Solutions

Hyo Seok Kang, Eunjun Park, Jang Yeon Hwang, Hansu Kim, Doron Aurbach, Ariel Rosenman, Yang Kook Sun

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Lithium-sulfur (Li-S) batteries are extensively explored due to their substantially higher theoretical energy density compared to any commercially available rechargeable batteries. Highly innovative efforts are invested to demonstrate promising Li-S cells at laboratory scales. In order to promote this battery technology further, it is important to develop and test sulfur cathodes with practically high loading per unit area. The work described herein is devoted to long-term testing of Li-S and Si-Li-S cells comprising electrodes with high loading of the active mass, in pouch cells. This study investigates composite cathodes in which sulfur is embedded in matrices of multiwall carbon nanotubes and composite anodes based on prelithiated Si/SiOx nano-spheres. These full-cells exhibit stable cycling performance for more than 400 cycles, substantially more than equivalent cells utilizing metallic lithium anodes, which suffer from dendritic Li growth. The use of pouch cells, high cathodes' loading, and relatively high charge exchange per unit area during each cycle, emphasize the limitation of Li metal anodes in rechargeable batteries and promote development of Si-Li-S batteries for prolonged cycle life.

Original languageEnglish
Article number1600052
JournalAdvanced Materials Technologies
Volume1
Issue number6
DOIs
StatePublished - Sep 2016

Bibliographical note

Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • Li metal
  • Li-S batteries
  • Si anode
  • free standing cathode
  • pouch-type full cells

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