Hierarchical nanorod-based TiO2 microspheres for superior electrochemical energy storage

Thi Hang Le, Thanh Son Le, Luong Xuan Dien, Dai Viet N. Vo, Quang Duc Truong

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Nanorod-based rutile TiO2 microspheres composed of numerous single-crystalline nanorods are successfully fabricated by hydrothermal treatment of peroxo titanic acid in acidic solution. The formation of highly oriented nanorod-based microspheres can be explained in view of crystal growth under the coordination chemistry rule, followed by particle attachment and coalescence. As anodes for Li-ion batteries, the TiO2 microsphere electrodes show enhanced rate performance, deliver a high reversible specific capacity of 180 mAh g−1 at 0.2 C (33.6 mA g−1) and 85.6 mAh g−1 at an extremely high rate of 50 C with an outstanding retention of 47.5%. These remarkable electrode properties are attributed to the efficient electron-transport by the hierarchical conductive pathway which promoted electronic conductivity and the shortened Li+ diffusion length resulting from the ultrafine nanorod structure.

Original languageEnglish
Pages (from-to)32-40
Number of pages9
JournalJournal of Electroanalytical Chemistry
Volume820
DOIs
Publication statusPublished - 2018 Jul 1

Keywords

  • Battery
  • High rate
  • Microspheres
  • TiO

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

Fingerprint Dive into the research topics of 'Hierarchical nanorod-based TiO<sub>2</sub> microspheres for superior electrochemical energy storage'. Together they form a unique fingerprint.

  • Cite this