Hierarchically structured reduced graphene oxide/WO3 frameworks for an application into lithium ion battery anodes

Sul Ki Park; Hyun Joo Lee; Min Hyung Lee; Ho Seok Park

doi:10.1016/j.cej.2015.07.009

Hierarchically structured reduced graphene oxide/WO₃ frameworks for an application into lithium ion battery anodes

Sul Ki Park, Hyun Joo Lee, Min Hyung Lee, Ho Seok Park

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

70 Scopus citations

Abstract

In this study, we demonstrate the synthesis of WO₃ particle deposited on three-dimensional (3D) macroporous reduced graphene oxide (RGO) frameworks for lithium ion battery anodes. WO₃ particles are uniformly deposited on the surface of RGO sheets and the resulting RGO/WO₃ frameworks reveal hierarchically structured, 3D networks assembled during a hydrothermal process. The hierarchically architectured RGO/WO₃ hybrid frameworks achieve a discharge capacity of 487mAhg^-1 even after 100 cycles at 150mAg^-1 and reversible capacity as high as 356mAhg^-1 at a high rate of 300mAg^-1. Such the improved battery performances of RGO/WO₃ frameworks are attributed to uniform dispersion of discrete WO₃ particles and 3D macroporous continuity, which provides a high accessible area, easy accessibility to redox sites, short ion diffusion length, and rapid charge and mass transport.

Original language	English
Pages (from-to)	724-729
Number of pages	6
Journal	Chemical Engineering Journal
Volume	281
DOIs	https://doi.org/10.1016/j.cej.2015.07.009
State	Published - 1 Dec 2015

Keywords

Graphene
Lithium ion battery
Nanocomposite
Nanostructure
WO

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.cej.2015.07.009

Cite this

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title = "Hierarchically structured reduced graphene oxide/WO3 frameworks for an application into lithium ion battery anodes",

abstract = "In this study, we demonstrate the synthesis of WO3 particle deposited on three-dimensional (3D) macroporous reduced graphene oxide (RGO) frameworks for lithium ion battery anodes. WO3 particles are uniformly deposited on the surface of RGO sheets and the resulting RGO/WO3 frameworks reveal hierarchically structured, 3D networks assembled during a hydrothermal process. The hierarchically architectured RGO/WO3 hybrid frameworks achieve a discharge capacity of 487mAhg-1 even after 100 cycles at 150mAg-1 and reversible capacity as high as 356mAhg-1 at a high rate of 300mAg-1. Such the improved battery performances of RGO/WO3 frameworks are attributed to uniform dispersion of discrete WO3 particles and 3D macroporous continuity, which provides a high accessible area, easy accessibility to redox sites, short ion diffusion length, and rapid charge and mass transport.",

keywords = "Graphene, Lithium ion battery, Nanocomposite, Nanostructure, WO",

author = "Park, \{Sul Ki\} and Lee, \{Hyun Joo\} and Lee, \{Min Hyung\} and Park, \{Ho Seok\}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

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doi = "10.1016/j.cej.2015.07.009",

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AU - Park, Sul Ki

AU - Lee, Hyun Joo

AU - Lee, Min Hyung

AU - Park, Ho Seok

PY - 2015/12/1

Y1 - 2015/12/1

N2 - In this study, we demonstrate the synthesis of WO3 particle deposited on three-dimensional (3D) macroporous reduced graphene oxide (RGO) frameworks for lithium ion battery anodes. WO3 particles are uniformly deposited on the surface of RGO sheets and the resulting RGO/WO3 frameworks reveal hierarchically structured, 3D networks assembled during a hydrothermal process. The hierarchically architectured RGO/WO3 hybrid frameworks achieve a discharge capacity of 487mAhg-1 even after 100 cycles at 150mAg-1 and reversible capacity as high as 356mAhg-1 at a high rate of 300mAg-1. Such the improved battery performances of RGO/WO3 frameworks are attributed to uniform dispersion of discrete WO3 particles and 3D macroporous continuity, which provides a high accessible area, easy accessibility to redox sites, short ion diffusion length, and rapid charge and mass transport.

AB - In this study, we demonstrate the synthesis of WO3 particle deposited on three-dimensional (3D) macroporous reduced graphene oxide (RGO) frameworks for lithium ion battery anodes. WO3 particles are uniformly deposited on the surface of RGO sheets and the resulting RGO/WO3 frameworks reveal hierarchically structured, 3D networks assembled during a hydrothermal process. The hierarchically architectured RGO/WO3 hybrid frameworks achieve a discharge capacity of 487mAhg-1 even after 100 cycles at 150mAg-1 and reversible capacity as high as 356mAhg-1 at a high rate of 300mAg-1. Such the improved battery performances of RGO/WO3 frameworks are attributed to uniform dispersion of discrete WO3 particles and 3D macroporous continuity, which provides a high accessible area, easy accessibility to redox sites, short ion diffusion length, and rapid charge and mass transport.

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KW - Nanocomposite

KW - Nanostructure

KW - WO

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