Modification of lithium titanate spinel by d-electron metals
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 sa...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2017-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://doi.org/10.1051/e3sconf/20171402042 |
| Summary: | 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. |
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| ISSN: | 2267-1242 |