文章基本信息

标题：Modification of lithium titanate spinel by d-electron metals
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作者：Danuta Olszewska ; Anna Rutkowska
期刊名称：E3S Web of Conferences
印刷版ISSN：2267-1242
电子版ISSN：2267-1242
出版年度：2017
卷号：14
页码：1-10
DOI：10.1051/e3sconf/20171402042
出版社：EDP Sciences
摘要：A simply and cheap solid state synthesis was used to produce powders of spinel phase Li 4-x Cu x Ti 5 O 12 , 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 Li 3.85 Cu 0.15 Ti 5 O 12 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.