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Preparation of Graphene Oxide/La₂Ti₂O₇ Composites with Enhanced Electrochemical Performances for Supercapacitors.

ABSTRACT: A series of graphene oxide (GO)/lanthanum titanate (La₂Ti₂O_7, LTO) fiber composites were prepared through a hydrothermal method. The LTO fibers were homogeneously dispersed between the GO sheets. The structure and micromorphology of the GO/LTO composites were systematically studied. The composite exhibited a high specific capacitance of 900.6 F g^-1 at a current density of 1 A g^-1 in the 1 M H₂SO₄ and 10 wt % sucrose aqueous solution as the electrolyte. With the extended potential window of 1.8 V, the fabricated asymmetric supercapacitor device delivered a maximum energy density of 94.0 Wh kg^-1 at a power density of 750.1 W kg^-1. The GO/LTO composites could be promising materials for energy storage.

SUBMITTER: Lu M

PROVIDER: S-EPMC8552325 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

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Preparation of Graphene Oxide/La2Ti2O7 Composites with Enhanced Electrochemical Performances for Supercapacitors.

Lu Munan M Cao Yi Y Xue Yufeng Y Qiu Wenfeng W

ACS omega 20211012 42

A series of graphene oxide (GO)/lanthanum titanate (La2Ti2O7, LTO) fiber composites were prepared through a hydrothermal method. The LTO fibers were homogeneously dispersed between the GO sheets. The structure and micromorphology of the GO/LTO composites were systematically studied. The composite exhibited a high specific capacitance of 900.6 F g-1 at a current density of 1 A g-1 in the 1 M H2SO4 and 10 wt % sucrose aqu ...[more]

PMID: 34722999

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