Sol-Gel Synthesis of Porous Li2TiO3 for High-Performance Electrochemical Supercapacitors

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Metal titanates have been considered as one of the most promising materials for supercapacitors because of their excellent properties. In this work, porous lithium titanate (Li2TiO3) nanomaterials were prepared by sol-gel method using lithiumhydroxide hydrate and tetrabutyl titanate as precursors and polystyrene spheres as a template. The Brunauer-Emmett-Teller (BET) result revealed a large specific surface area of the Li2TiO3 nanomaterials. More importantly, the porous Li2TiO3 nanomaterials were examined as the electrode materials of supercapacitors. Such porous Li2TiO3 nanomaterials' electrode exhibited a specific capacitance of 195 Fg(-1) at a current density of 1Ag(-1) with a capacity retention of 96.3% after 5000 cycles in 3M KOH aqueous electrolyte. These superior results indicate that the porous Li2TiO3 nanomaterials are excellent materials for high-performance energy storage devices.
Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
Issue Date
2018-03
Language
English
Article Type
Article
Keywords

ENHANCED PHOTOCATALYTIC ACTIVITY; LITHIUM-ION BATTERIES; FACILE SYNTHESIS; MICRO-SUPERCAPACITORS; ENERGY-STORAGE; HIGH-POWER; GRAPHENE; COMPOSITES; ELECTRODE; EVOLUTION

Citation

NANO, v.13, no.3

ISSN
1793-2920
DOI
10.1142/S1793292018500273
URI
http://hdl.handle.net/10203/241444
Appears in Collection
RIMS Journal Papers
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