In-situ lithiation through an ‘injection’ strategy in the pouch type sulfur-graphite battery system

Research output: Contribution to journalArticle

Abstract

Here we report an ‘injection’ strategy to introduce transportable Li-ion in the metallic Li free sulfur-graphite (S-G) pouch type full cell, which could alleviate the safety issues from Li dendrites. A novel process with organolithium reagent is used to reduce S to Li2S rapidly during assembling the pouch type full cell. The sublimation property of the side product enables the in-situ injection in the pouch type cell, which will not introduce impurities. In addition, this ‘injection’ strategy avoids the drawbacks from the instability of the Li2S to moisture, which could largely reduce the production cost and improve the practical energy density of the cell. The injected Li2S-G battery shows quite stable cyclability with a capacity of 640 mAh g−1 at 0.1 C rate. This in-situ ‘injection’ method provides an effective and practical way to produce Li metal free sulfur Li-ion battery with alleviated safety issues.

Original languageEnglish
Pages (from-to)228-232
Number of pages5
JournalJournal of Power Sources
Volume430
DOIs
Publication statusPublished - 2019 Aug 1

Keywords

  • Applicable ‘injection’ process
  • Chemical lithiation
  • Lithium naphtalenide
  • Stable cyclability
  • Sulfur-graphite battery

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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