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  1. Home
  2. Indian Institute of Technology Madras
  3. Publication8
  4. Studies on electrochemical lithium insertion in isostructural titanium niobate and tantalate phases with shear ReO<inf>3</inf> structure
 
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Studies on electrochemical lithium insertion in isostructural titanium niobate and tantalate phases with shear ReO<inf>3</inf> structure

Date Issued
01-07-2013
Author(s)
Saritha, D.
Upadhyayula V Varadaraju 
Indian Institute of Technology, Madras
DOI
10.1016/j.materresbull.2013.03.033
Abstract
TiNb2O7 and TiTa2O7 phases are synthesized by solid-state reaction method and are investigated for electrochemical Li insertion/extraction. The electrochemical insertion of Li in these phases is characterized by both solid solution and two-phase regimes. The structure is stable toward Li insertion/extraction. The first cycle discharge capacity values are 307 mAh g-1 and 215 mAh g-1 in the voltage range of 3.0-1.0 V for TiNb2O7 and TiTa 2O7 phases, respectively. The discharge capacities of TiNb2O7 and TiTa2O7 are 212 mAh g-1 and 100 mAh g-1, respectively, after 20 cycles. © 2013 Elsevier Ltd. All rights reserved.
Volume
48
Subjects
  • A. Titanium niobate

  • A. Titanium tantalite...

  • D. Electrochemical Li...

  • D. Shear ReO structu...

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