Lithium storage in perovskite lithium lanthanum titanate
2013; Elsevier BV; Volume: 32; Linguagem: Inglês
10.1016/j.elecom.2013.03.038
ISSN1873-1902
AutoresChunxiu Hua, Xiangpeng Fang, Zhaoxiang Wang, Liquan Chen,
Tópico(s)Ferroelectric and Piezoelectric Materials
ResumoPerovskite 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.
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