Journal
JOURNAL OF POWER SOURCES
Volume 196, Issue 6, Pages 3290-3295Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2010.11.043
Keywords
Dip-coating; Core-shell; Lithium cobalt oxide; Li-ion battery; Titania
Funding
- Austrian Science Fund (FWF) [J 2979]
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In this work Substrate Induced Coagulation (SIC) was used to coat the cathode material LiCoO2, commonly used in Li-ion batteries, with fine nano-sized particulate titania. Substrate Induced Coagulation is a self-assembled dip-coating process capable of coating different surfaces with fine particulate materials from liquid media. A SIC coating consists of thin and rinse-prove layers of solid particles. An advantage of this dip-coating method is that the method is easy and cheap and that the materials can be handled by standard lab equipment. Here, the SIC coating of titania on LiCoO2 is followed by a solid-state reaction forming new inorganic layers and a core-shell material, while keeping the content of active battery material high. This titania based coating was designed to confine the reaction of extensively delithiated (charged) LiCoO2 and the electrolyte. The core-shell materials were characterized by SEM, XPS, XRD and Rietveld analysis. (c) 2010 Elsevier B.V. All rights reserved.
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