Engineered Si electrode nanoarchitecture: A scalable postfabrication treatment for the production of next-generation li-ion batteries

Fathy M. Hassan, Victor Chabot, Abdel Rahman Elsayed, Xingcheng Xiao, Zhongwei Chen

Research output: Contribution to journalArticlepeer-review

110 Citations (Scopus)

Abstract

A novel, economical flash heat treatment of the fabricated silicon based electrodes is introduced to boost the performance and cycle capability of Li-ion batteries. The treatment reveals a high mass fraction of Si, improved interfacial contact, synergistic SiO2/C coating, and a conductive cellular network for improved conductivity, as well as flexibility for stress compensation. The enhanced electrodes achieve a first cycle efficiency of ∼84% and a maximum charge capacity of 3525 mA h g-1, almost 84% of silicon's theoretical maximum. Further, a stable reversible charge capacity of 1150 mA h g-1 at 1.2 A g-1 can be achieved over 500 cycles. Thus, the flash heat treatment method introduces a promising avenue for the production of industrially viable, next-generation Li-ion batteries.

Original languageEnglish
Pages (from-to)277-283
Number of pages7
JournalNano Letters
Volume14
Issue number1
DOIs
Publication statusPublished - Jan 8 2014
Externally publishedYes

Keywords

  • Nanostructures
  • electrochemical performance
  • flash heat treatment
  • lithium-ion battery
  • rate capability
  • silicon

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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