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Graphitized carbon and graphene modified Fe 2 O 3 /Li 4 Ti 5 O 12 as anode material for lithium ion batteries
Author(s) -
Wang Qiufen,
Lu Mengwei,
Miao Juan,
Yang Shuai,
Wen Tao,
Sun Jiufang
Publication year - 2017
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.6059
Subject(s) - x ray photoelectron spectroscopy , scanning electron microscope , fourier transform infrared spectroscopy , materials science , graphene , lithium (medication) , anode , electrochemistry , analytical chemistry (journal) , carbon fibers , spectroscopy , nuclear chemistry , chemical engineering , nanotechnology , chemistry , electrode , composite number , composite material , organic chemistry , physics , medicine , endocrinology , engineering , quantum mechanics
Graphitized carbon (GC) and graphene (GE) modified Fe 2 O 3 /Li 4 Ti 5 O 12 (LTO) composites have been synthesized via a solid‐state reaction, respectively. The structure, morphology and electrochemical performance of the materials have also been characterized with X‐ray diffraction (XRD), scanning electron microscope (SEM) with an energy dispersive spectroscopy (EDS) system, X‐ray photoelectron spectrometer (XPS), Fourier transform infrared spectroscopy (FTIR) and electrochemical measurements. The discharge capacities of Fe 2 O 3 /LTO, GC/Fe 2 O 3 /LTO and GE/Fe 2 O 3 /LTO are 100.2 mAh g −1 , 207.5 mAh g −1 and 238.9 mAh g −1 after 100 cycles at the current density of 176 mA g −1 . The cyclic stability and rate capability are in the order of GE/Fe 2 O 3 /LTO > GC/Fe 2 O 3 /LTO > Fe 2 O 3 /LTO because of the synergistic effect between GC (GE) and Fe 2 O 3 /LTO. Copyright © 2016 John Wiley & Sons, Ltd.