Jump to main content
Jump to site search

Issue 1, 2013
Previous Article Next Article

Yttrium-modified Li4Ti5O12 as an effective anode material for lithium ion batteries with outstanding long-term cyclability and rate capabilities

Author affiliations

Abstract

Yttrium-modified Li4Ti5O12 (YLTO) was fabricated by a coprecipitation method using tetrabutyl titanate, Y(NO3)3·6H2O and LiOH·H2O as reactants, followed by simply sintering the dried mixture at 600 °C. The products and their lithiation–delithiation process were characterized by a combination of electrochemical measurements, X-ray diffraction, transmission electron microscopy and nitrogen adsorption. The YLTO exhibits excellent long-term cycling stability (over 1000 cycles) at a high current rate of 10 C and outstanding rate capabilities. Particularly, the YLTO demonstrates remarkable cyclability even if directly cycled at a rate of 10 C without low-rate activation and with no relaxation between charge and discharge. Even without utilizing carbon black as conductive material, the YLTO still shows prominent rate capabilities and long-term cyclic performance at a rate of 5 C. The excellent performance is ascribed to the increased lattice constant, improved electronic and ionic conductivities, refined grains with large surface area and uniform nanopores resulting from the Y-modification.

Graphical abstract: Yttrium-modified Li4Ti5O12 as an effective anode material for lithium ion batteries with outstanding long-term cyclability and rate capabilities

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Aug 2012, accepted on 24 Sep 2012 and first published on 22 Oct 2012


Article type: Paper
DOI: 10.1039/C2TA00048B
Citation: J. Mater. Chem. A, 2013,1, 89-96
  •   Request permissions

    Yttrium-modified Li4Ti5O12 as an effective anode material for lithium ion batteries with outstanding long-term cyclability and rate capabilities

    Y. Bai, C. Gong, N. Lun and Y. Qi, J. Mater. Chem. A, 2013, 1, 89
    DOI: 10.1039/C2TA00048B

Search articles by author

Spotlight

Advertisements