Synthesis and electrochemical characteristics of Li4Ti 5O12 nanofibers by hydrothermal method

Eun Kyung Kim, Byung Hyun Choi, Mi Jung Jee, Yong Jin Kwon, Han Seo, Young Jun Kim, Kwang Bum Kim

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2 Citations (Scopus)

Abstract

In this paper the effect of the structure, particle size, morphology of nanofibers and nanoparticles for the electrochemical characteristics of Li 4Ti5O12 was investigated. The H 2Ti2O5 · H2O synthesized in hydrothermal treatment from a NaOH treatment on TiO2 by ion exchange processing with HCl solutions. After the Li4Ti5O 12 nanofibers synthesized in hydrothermal treatment of H 2Ti2O5·H2O and LiOH·H2O. The hydrogen titanate precursor prepared by ion exchange processing with 0.1-0.3M HCl solutions and the final products calcined at 350°C-400°C. The Li4Ti5O12 nanofibers showed well reversibility during the insertion and extraction of Li, good cycle performance, high capacity and low electrochemical reaction resistance than nanoparticles. also c-rate exhibited a discharge capacity of 172mAh/g at 0.2C and H5mAh/g at 5C, which is the 77%, 67% ofthat obtained in the process charged, discharged at 0.2C.

Original languageEnglish
Pages (from-to)627-632
Number of pages6
JournalJournal of the Korean Ceramic Society
Volume47
Issue number6
DOIs
Publication statusPublished - 2010 Dec 1

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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