NDLI: Modification of the electrochemical activity of LiMn1.95Si0.05O4 spinel via addition of phases with different physico-chemical properties

Content Provider	Royal Society of Chemistry (RSC)
Author	Iturrondobeitia, Amaia Kim, Chunjoong Rojo, Teófilo Goñi, Aintzane Lezama, Luis Cabana, Jordi Doeff, Marca
Copyright Year	2014
Abstract	We report the synthesis of composites based on freeze–dried LiMn1.95Si0.05O4 spinel. In order to improve the active material–electrolyte interface for better cyclability, three different additive materials were chosen: LiMn1.9Ga0.1O4, Al2O3 and Li3PO4. A morphologic examination of the composites demonstrated a good connection of the homogeneous primary particles about 50 nm in diameter and the different additive materials, especially when adding LiMn1.9Ga0.1O4 and Al2O3. The nature of the additives was confirmed by XPS and magnetic measurements. The electrochemical study revealed that LiMn1.9Ga0.1O4 is a suitable complement to LiMn1.95Si0.05O4. Due to the similar transport properties, the concurrence of both differently substituted spinels in the electrode material has a synergistic effect favoring the electrochemical response of the cathode composite.
Starting Page	3216
Ending Page	3222
Page Count	7
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	2
Issue Number	9
Journal	Journal of Materials Chemistry A
DOI	10.1039/c3ta14793b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Spinel group Electrochemistry Electrode Cathode
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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Modification of the electrochemical activity of LiMn_1.95Si_0.05O₄ spinel via addition of phases with different physico-chemical properties