کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
179422 | 459349 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Lithium storage in perovskite lithium lanthanum titanate Lithium storage in perovskite lithium lanthanum titanate](/preview/png/179422.png)
• Electrochemical performances of perovskite Li0.27La0.54TiO2.945 were studied.
• Lithium storage mechanism was clarified in a wide voltage range of 0.01-3.00 V.
• The formation of the SEI layer was characterized and found stable up to 3.0 V.
• The cycling performance was improved significantly by CVD carbon-coating.
Perovskite lithium lanthanum titanate (LLTO) was synthesized using sol–gel method. It shows a reversible capacity of 145 mA h g− 1 and moderate cycling performance between 0.01 and 2.00 V. Cyclic voltammetry and X-ray diffraction results demonstrate a two-step solid–solution reaction behavior in the voltage range of 0.00–3.00 V upon lithium insertion/extraction. A stable solid electrolyte interphase (SEI) layer is formed on the surface of LLTO after the initial discharge. Carbon coating by chemical vapor deposition improves its cycling performance significantly.
Journal: Electrochemistry Communications - Volume 32, July 2013, Pages 5–8