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TitleImproved electrochemical performance of rare earth doped LiMn1.5-xNi0.5RExO4 based composite cathodes for lithium-ion batteries
Author(s)Ram, Pura
Gören, A.
Gonçalves, Renato Ferreira
Choudhary, Ganpat
Ferdov, S.
Silva, Maria Manuela
Singhal, Rahul
Costa, C. M.
Sharma, Rakesh K.
Lanceros-Méndez, S.
Electrical properties
Physical properties
Chemical properties
Issue date2018
PublisherElsevier Ltd
JournalComposites Part B: Engineering
Abstract(s)LiMn1.5Ni0.5O4 with spinel type of structure was synthesized by sol-gel method and doped by different rare-earth elements (Nd, Gd and Dy). It was found that the inclusion of rare-earth element preserves the cubic spinel structure, leads to smaller particle size and improves the cyclic performance of the produced batteries. The best battery performance was obtained after doping the spinel structure by Gd. Among the used rare-earth elements Gd is the only one with stable oxidation state of 3 + which leads to stabilization of the Mn dissolution.Thus, the improvements observed in battery performance (rate performance and cycle life) are due to the superior structural stability of the doped active materials. It is concluded that the LiMn1.48Ni0.5Gd0.02O4 sample is the one with the best overall performance to act as active material for cathodes in rechargeable lithium-ion batteries.
AccessEmbargoed access (2 Years)
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)
CDQuim - Artigos (Papers)

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