Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 43, 2016
Previous Article Next Article

Ag quantum dots promoted Li4Ti5O12/TiO2 nanosheets with ultrahigh reversible capacity and super rate performance for power lithium-ion batteries

Author affiliations

Abstract

Spinel Li4Ti5O12 (LTO) has been widely studied as a promising anode material due to its outstanding structural stability and remarkable safety. However, the poor electron conductivity and low lithium-ion diffusion coefficient seriously limit its rate capability for the application in power lithium-ion batteries (LIBs). Herein, we demonstrate rationally designed Ag quantum dot (QD) modified LTO/TiO2 nanosheets (Ag-LTO/TiO2 NSs) synthesized via a facile hydrothermal process followed by heat treatment, highlighting simultaneously the promotion of electron conductivity and lithium-ion diffusion coefficient. The newly prepared Ag-LTO/TiO2 NSs deliver an ultrahigh reversible capacity of 177 mA h g−1 at 0.5C and a superior rate performance of more than 148 mA h g−1 at 30C between 1.0 and 2.5 V. The achieved superior electrochemical performance largely surpasses that of the state-of-the-art LTO-based materials for LIBs. The present work provides a facile yet effective approach to significantly boost the high rate capability of LTO/TiO2 composites. These novel quantum dot modified 2-dimensional (2D) materials will pave the way to a new family of carbon-free anode materials in response to the increasing demands for high-power energy storage.

Graphical abstract: Ag quantum dots promoted Li4Ti5O12/TiO2 nanosheets with ultrahigh reversible capacity and super rate performance for power lithium-ion batteries

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 11 Aug 2016, accepted on 05 Oct 2016 and first published on 06 Oct 2016


Article type: Paper
DOI: 10.1039/C6TA06874J
Citation: J. Mater. Chem. A, 2016,4, 16886-16895
  •   Request permissions

    Ag quantum dots promoted Li4Ti5O12/TiO2 nanosheets with ultrahigh reversible capacity and super rate performance for power lithium-ion batteries

    H. Ge, L. Cui, B. Zhang, T. Ma and X. Song, J. Mater. Chem. A, 2016, 4, 16886
    DOI: 10.1039/C6TA06874J

Search articles by author