Mesoporous carbon/Li4Ti5O12 nanoflakes composite anode material lithiated to 0.01 V
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Date
2019-09-01
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Industrial and Engineering Chemistry
Abstract
A composite anode material is fabricated from mesoporous carbon and synthesized Li4Ti5O12 nanoflakes
for application in lithium ion batteries. Li4Ti5O12 is used as a capacity contributing conductive additive
because of the change in its electronic structure from insulating to metallic as it undergoes lithiation.
Cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy are
used to analyze the electrochemical properties of the mesporous carbon/Li4Ti5O12 nanoflakes composite
material, and synergistic results have been confirmed. The composite achieves high specific capacity and
excellent cyclability with a capacity stabilizing at 300 mA h g 1 after 100 cycles at a current density of 175
mA g 1 and 200 mA h g 1 after 500 more cycles at a high current density of 500 mA g 1. This research
shows the applicability of using LTO as a conducting agent with significant capacity contribution as a
composite material with anode materials discharged to 0.01 V for high energy storage with fast charge–
discharge capability.
Description
Research Article
Keywords
Mesoporous carbon, LTO nanoflakes, Composite anode, Lithium ion battery