Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 32, Issue -, Pages 5-8Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2013.03.038
Keywords
Lithium lanthanum titanate; Lithium storage mechanism; SEI formation; Carbon coating
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Funding
- National 973 Program of China [2009CB220100]
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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. (C) 2013 Elsevier B.V. All rights reserved.
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