(0 0 1) faceted mesoporous anatase TiO2 microcubes as superior insertion anode in practical Li-ion configuration with LiMn2O4

Onkar Game, Tanya Kumari, Upendra Singh, Vanchiappan Aravindan*, Srinivasan Madhavi, Satishchandra B. Ogale

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Abstrakt

Anatase TiO2 microcubes with a unique (0 0 1) facets, single crystalline nature and highly uniform mesoporous morphology are shown to yield an excellent performance as efficient insertion anode material for lithium-ion battery application in both half cell (Li/TiO2) and full-cell (LiMn2O4/TiO2) assemblies. This material displays a stable reversible capacity of ~150 mA h g-1 (current density of 150 mA g-1) after 250 cycles with capacity retention of ~73% in the half-cell configuration. In full-cell assembly with spinel LiMn2O4 it shows remarkable ~74% retention of the initial capacity after 1000 cycles at 2 C rate, with an operating potential of ~2.2 V which is the one of the most stable performances shown for anatase TiO2 based Li-ion batteries in a full-cell assembly. We also highlight and discuss the effective contributions of mesopores and single crystalline nature along with the highly exposed (0 0 1) facets towards such efficient Li-insertion/extraction processes over a long duration as revealed from cycling stability.

OriginalsprogEngelsk
TidsskriftEnergy Storage Materials
Vol/bind3
Sider (fra-til)106-112
ISSN2405-8297
DOI
StatusUdgivet - 1. apr. 2016
Udgivet eksterntJa

Bibliografisk note

Funding Information:
OG would like to thank CSIR for Senior Research Fellowship (31/11/(667)/2011-EMR-I). TK and US acknowledges Director, IISER, Pune for permission to carryout internship at NCL, Pune. VA and SM thank the National Research Foundation (NRF, Singapore) for financial support through the Competitive Research Programme (CRP, Grant no. NRF-CRP4-2008-03 ). SBO acknowledges funding under the CSIR TAPSUN Program .

Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.

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