Preparation of layered Si materials as anode for lithium-ion batteries

Runsheng Gao, Jie Tang, Kazuya Terabe, Xiaoliang Yu, Taizo Sasaki, Ayako Hashimoto, Kazuko Asano, Masa aki Suzuki, Kensuke Nakura

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)

Abstract

The structure fracture of silicon electrodes due to the volume change during Si-Li alloying reactions greatly hinders their practical applications. Herein a layered Si material (LSM) was prepared by a simple one-step topological reaction and used as an effective LIBs anode. The layered structure has abundant gaps and pores to accelerate ion transportation. Microstructure measurements demonstrate the formation of an amorphous lithiation product but not Si-Li alloys. As a result, the LSM anode shows higher specific capacity and a much better cycling performance than common bulk Si anode. Thus, the LSM could be alternative high-performance Si anode in LIBs.

Original languageEnglish
Pages (from-to)198-205
Number of pages8
JournalChemical Physics Letters
Volume730
DOIs
Publication statusPublished - Sep 2019
Externally publishedYes

Keywords

  • Electrochemical properties
  • Layered structure
  • Lithium-ion battery
  • Silicon

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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