Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 163, Issue 6, Pages A1042-A1049Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.1181606jes
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Funding
- Korea Institute of Science and Technology (KIST) Institutional Program [2E26292]
- Ministry of Science, ICT & Future Planning, Republic of Korea [2E26292] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Micron-sized TiNb2O7 (TNO), composed of nano-scaled primary particles, was synthesized using formic acid and a hydrothermal reaction. The TNO microsphere was optimized using formic acid and then wrapped with a graphene oxide (GO) layer using cetyltrimethylammonium bromide (CTAB) surfactants. It was then heat treated in a reducing atmosphere to yield a reduced graphene oxide-wrapped TNO microsphere (rGO-wrapped TNO microsphere) which exhibited superior rate capabilities and cyclability for anode materials in lithium ion batteries. In-depth electrochemical evaluations, including cyclic voltammetry and impedance studies, reveal that both rGO wrapping and the presence of a controlled TNO microsphere improve the electronic conductivity and lithium ion diffusivity of anodes. (C) 2016 The Electrochemical Society. All rights reserved.
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