Ni-encapsulated TiO2 nanotube array prepared using atomic layer deposition as a high-performance Li-ion battery anode

Jinyun Liu, Ping Zhou, Tianli Han, Jiarui Huang, Jinhuai Liu, Jinjin Li, Paul V. Braun

Research output: Contribution to journalArticle

Abstract

TiO2-based anodes are highly desired because of their significant safety with good structural stability during charge/discharge. However, the intrinsic poor conductivity of TiO2 restricts its capacity cycling at a high rate. Herein, we present a good rate-performance anode consisting of Ni-encapsulated TiO2 nanotube array growing on three-dimensional Ni scaffold. By using atomic layer deposition (ALD), a TiO2 layer was coated onto Ni nanotubes which were fabricated using ZnO nanorod array template. The Ni-encapsulated TiO2 nanotube array anode shows a capacity of 188 mAh g−1 after 100 cycles at 0.5 C. The metal Ni encapsulated in the TiO2 nanotubes provides an efficient pathway for rapid electron transfer. It is believed that the metal-encapsulated composite design presented here would be significant for many possible anodes and cathodes.

Original languageEnglish (US)
Pages (from-to)12-15
Number of pages4
JournalMaterials Letters
Volume219
DOIs
StatePublished - May 15 2018

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Keywords

  • Atomic layer deposition
  • Energy storage and conversion
  • Porous materials
  • TiO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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