Hollow lithiated metal oxide particles as lithium-ion battery cathode materials

✍ Scribed by Gary M. Koenig Jr.; Ilias Belharouak; Huiming M. Wu; Khalil Amine

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 888 KB
• Volume: 56
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/j.electacta.2010.10.066

✦ Synopsis

a b s t r a c t

We report the synthesis and characterization of the hollow micrometer-sized (Mn 0.5 Ni 0.4 Co 0.1 )CO 3 precursor, and one of its promising lithium-enriched phases. The chemical composition of the resulting lithiated final material was Li 1.2 (Mn 0.5 Ni 0.4 Co 0.1 )O 2+y . Lithium half cells with cathodes comprised of these hollow particles as the active intercalation material showed a reversible capacity of 183 mAh/g when cycled between 2.0 V and 4.6 V. X-ray diffraction patterns and the electrochemical data of Li 1.2 (Mn 0.5 Ni 0.4 Co 0.1 )O 2+y were consistent with the existence of the Li 2 MnO 3 -type integrated component that was activated during the initial charging of the cells. The results presented herein demonstrate a method to synthesize multicomponent, multiphase materials with hollow internal morphologies that can reversibly and stably be cycled with high gravimetric capacities as the active cathode material in lithium-ion batteries.