A porous 3D-RGO@MWCNT hybrid material as Li-S battery cathode

Yongguang Zhang; Jun Ren; Yan Zhao; Taizhe Tan; Fuxing Yin; Yichao Wang

doi:10.3762/BJNANO.10.52

A porous 3D-RGO@MWCNT hybrid material as Li-S battery cathode

Yongguang Zhang, Jun Ren, Yan Zhao, Taizhe Tan, Fuxing Yin, Yichao Wang

Western Sydney University

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

8 Citations (Scopus)

Abstract

In this work, a unique three-dimensional (3D) structured carbon-based composite was synthesized. In the composite, multiwalled carbon nanotubes (MWCNT) form a lattice matrix in which porous spherical reduced graphene oxide (RGO) completes the 3D structure. When used in Li-S batteries, the 3D porous lattice matrix not only accommodates a high content of sulfur, but also induces a confinement effect towards polysulfide, and thereby reduces the "shuttle effect". The as-prepared S-3D-RGO@MWCNT composite delivers an initial specific capacity of 1102 mAh·g-1. After 200 charging/discharge cycles, a capacity of 805 mAh·g-1 and a coulombic efficiency of 98% were maintained, implying the shuttle effect was greatly suppressed by the composite matrix. In addition, the S-3D-RGO@MWCNT composite also exhibits an excellent rate capability.

Original language	English
Pages (from-to)	514-521
Number of pages	8
Journal	Beilstein Journal of Nanotechnology
Volume	10
DOIs	https://doi.org/10.3762/BJNANO.10.52
Publication status	Published - 2019

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This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited.

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Cite this

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abstract = "In this work, a unique three-dimensional (3D) structured carbon-based composite was synthesized. In the composite, multiwalled carbon nanotubes (MWCNT) form a lattice matrix in which porous spherical reduced graphene oxide (RGO) completes the 3D structure. When used in Li-S batteries, the 3D porous lattice matrix not only accommodates a high content of sulfur, but also induces a confinement effect towards polysulfide, and thereby reduces the {"}shuttle effect{"}. The as-prepared S-3D-RGO@MWCNT composite delivers an initial specific capacity of 1102 mAh·g-1. After 200 charging/discharge cycles, a capacity of 805 mAh·g-1 and a coulombic efficiency of 98% were maintained, implying the shuttle effect was greatly suppressed by the composite matrix. In addition, the S-3D-RGO@MWCNT composite also exhibits an excellent rate capability.",

author = "Yongguang Zhang and Jun Ren and Yan Zhao and Taizhe Tan and Fuxing Yin and Yichao Wang",

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doi = "10.3762/BJNANO.10.52",

language = "English",

volume = "10",

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T1 - A porous 3D-RGO@MWCNT hybrid material as Li-S battery cathode

AU - Zhang, Yongguang

AU - Ren, Jun

AU - Zhao, Yan

AU - Tan, Taizhe

AU - Yin, Fuxing

AU - Wang, Yichao

PY - 2019

Y1 - 2019

N2 - In this work, a unique three-dimensional (3D) structured carbon-based composite was synthesized. In the composite, multiwalled carbon nanotubes (MWCNT) form a lattice matrix in which porous spherical reduced graphene oxide (RGO) completes the 3D structure. When used in Li-S batteries, the 3D porous lattice matrix not only accommodates a high content of sulfur, but also induces a confinement effect towards polysulfide, and thereby reduces the "shuttle effect". The as-prepared S-3D-RGO@MWCNT composite delivers an initial specific capacity of 1102 mAh·g-1. After 200 charging/discharge cycles, a capacity of 805 mAh·g-1 and a coulombic efficiency of 98% were maintained, implying the shuttle effect was greatly suppressed by the composite matrix. In addition, the S-3D-RGO@MWCNT composite also exhibits an excellent rate capability.

AB - In this work, a unique three-dimensional (3D) structured carbon-based composite was synthesized. In the composite, multiwalled carbon nanotubes (MWCNT) form a lattice matrix in which porous spherical reduced graphene oxide (RGO) completes the 3D structure. When used in Li-S batteries, the 3D porous lattice matrix not only accommodates a high content of sulfur, but also induces a confinement effect towards polysulfide, and thereby reduces the "shuttle effect". The as-prepared S-3D-RGO@MWCNT composite delivers an initial specific capacity of 1102 mAh·g-1. After 200 charging/discharge cycles, a capacity of 805 mAh·g-1 and a coulombic efficiency of 98% were maintained, implying the shuttle effect was greatly suppressed by the composite matrix. In addition, the S-3D-RGO@MWCNT composite also exhibits an excellent rate capability.

UR - https://hdl.handle.net/1959.7/uws:71273

U2 - 10.3762/BJNANO.10.52

DO - 10.3762/BJNANO.10.52

M3 - Article

SN - 2190-4286

VL - 10

SP - 514

EP - 521

JO - Beilstein Journal of Nanotechnology

JF - Beilstein Journal of Nanotechnology

ER -

A porous 3D-RGO@MWCNT hybrid material as Li-S battery cathode

Abstract

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