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Monodispersed Li 4 Ti 5 O 12 with Controlled Morphology as High Power Lithium Ion Battery Anodes
Author(s) -
Li Yunchao,
Fu Guoyi,
Watson Mark,
Harrison Stephen,
Paranthaman M. Parans
Publication year - 2016
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201600106
Subject(s) - materials science , anode , electrochemistry , nanoparticle , chemical engineering , electrode , hydrothermal circulation , scanning electron microscope , microstructure , cathode , brine , annealing (glass) , lithium (medication) , nanotechnology , ion , battery (electricity) , lithium ion battery , hydrothermal synthesis , metallurgy , composite material , chemistry , medicine , power (physics) , physics , organic chemistry , quantum mechanics , endocrinology , engineering
Monodispersed Li 4 Ti 5 O 12 (LTO) nanoparticles with controlled microstructure were successfully synthesized by a combination of hydrolysis and hydrothermal method followed by a post‐annealing process. The scanning electron microscopy images showed that particles with a size of 30–50 nm were precisely controlled throughout the synthesis process. The electrochemical tests of the as‐prepared LTO electrodes in a half‐cell proved its high rate performance and outstanding cyclability which benefits from the preserved well‐controlled nanoparticle size and morphology. LTO electrodes were also tested in a full cell configuration in pairing with LiFePO 4 cathodes, which demonstrated a capacity of 147.3 mA h g −1 . In addition, we have also demonstrated that LTO materials prepared using lithium salts separated from geothermal brine solutions had good cyclability. These demonstrations provide a promising way for making low‐cost, large‐scale LTO electrode materials for energy storage applications.