E3S Web Conf.
Volume 14, 2017Energy and Fuels 2016
|Number of page(s)
|15 March 2017
Modification of lithium titanate spinel by d-electron metals
AGH University of Science and Technology, Faculty of Energy and Fuels, al. A. Mickiewicza 30, 30-059 Cracow, Poland
* Corresponding author: firstname.lastname@example.org
A simply and cheap solid state synthesis was used to produce powders of spinel phase Li4-xCuxTi5O12, where 0≤x≤0.2, with crystallite size in ~890 nanometers range. The as-prepared samples were verified by scanning electron microscopy and X-ray diffraction. The electrochemical performance of these samples was examined by galvanostatic and voltamperometric tests. To determine transport properties an impedance spectroscopy tests were obtained. These measurements showed excellent high-rate performance and remark- ably good cyclability of the fabricated powders. Capacity retention in Li3.85Cu0.15Ti5O12 has 77% theoretical capacity after raise the discharge current from 1C to 10C and there is less than 2% of capacity loss after 50 charge/discharge cycles at 1C current rate.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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