Bulk-nanoporous-silicon negative electrode with extremely high cyclability for lithium-ion batteries prepared using a top-down process

Takeshi Wada, Tetsu Ichitsubo, Kunio Yubuta, Haruhiko Segawa, Hirokazu Yoshida, Hidemi Kato

Research output: Contribution to journalArticlepeer-review

156 Citations (Scopus)

Abstract

We synthesized freestanding bulk three-dimensional nanoporous Si using dealloying in a metallic melt, a top-down process. Using this nanoporous Si, we fabricated negative electrodes with high lithium capacity, nearing their theoretical limits, and greatly extended cycle lifetimes, considerably improving the battery performance compared with those using electrodes made from silicon nanoparticles. By operating the electrodes below the accommodation volume limit of their pores, we prolonged their cycle lifetime.

Original languageEnglish
Pages (from-to)4505-4510
Number of pages6
JournalNano Letters
Volume14
Issue number8
DOIs
Publication statusPublished - Aug 13 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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