Electrochemical characteristics of aluminum sulfide for use in lithium secondary batteries

Hiroshi Senoh, Tomonari Takeuchi, Hiroyuki Kageyama, Hikari Sakaebe, Masaru Yao, Koji Nakanishi, Toshiaki Ohta, Tetsuo Sakai, Kazuaki Yasuda

Research output: Contribution to journalArticlepeer-review

Abstract

In our effect to develop a lithium secondary battery with high energy density, aluminum sulfide (Al2S3) was studied for use as an active material. The measured initial discharge capacity of Al 2S3 was ca. 1170 mAh g-1 at 100 mA g -1. This corresponds to 62% of the theoretical capacity for the sulfide. Al2S3 exhibited poor capacity retention in the potential range between 0.01 V and 2.0 V, mainly due to the structural irreversibility of the charge process or Li extraction. XRD and Al and S K-XANES analyses indicated that the surface of Al2S3 reacts reversibly during charge and discharge processes, while the core of Al 2S3 showed structural irreversibility because LiAl and Li2S were formed from Al2S3 at the initial discharge and remained as they were afterward.

Original languageEnglish
Pages (from-to)8327-8330
Number of pages4
JournalJournal of Power Sources
Volume195
Issue number24
DOIs
Publication statusPublished - 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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