N-doped Carbon Framework/Reduced Graphene Oxide Nanocomposite as a Sulfur Reservoir for Lithium-Sulfur Batteries

Jeongyeon Lee; Seung Keun Park; Yuanzhe Piao

doi:10.1016/j.electacta.2016.11.110

N-doped Carbon Framework/Reduced Graphene Oxide Nanocomposite as a Sulfur Reservoir for Lithium-Sulfur Batteries

Jeongyeon Lee, Seung Keun Park, Yuanzhe Piao

Research output: Journal article publication › Journal article › Academic research › peer-review

27 Citations (Scopus)

Abstract

In this study, by using commercial melamine foam as a starting material, we report a facile method to prepare N-doped carbon framework loaded with graphene (NCF-G), in which graphene nanosheets are homogeneously coated on the N-doped carbon framework. After sulfur is infused into this composite, the electrode delivers an initial capacity of 1,359.7 mA h g⁻¹ at 0.1C (1st cycle), and maintains a specific capacity of 629.3 mA h g⁻¹ for 150 cycles at 0.5C for lithium-sulfur batteries. The improved electrochemical performances are attributed to the capping effect exerted by N-doping for polysulfides and high electrical conductivity of the carbon framework with highly conductive graphene.

Original language	English
Pages (from-to)	1345-1353
Number of pages	9
Journal	Electrochimica Acta
Volume	222
DOIs	https://doi.org/10.1016/j.electacta.2016.11.110
Publication status	Published - 20 Dec 2016

Keywords

hetero atom
lithium-sulfur batteries
melamine foam
reduced graphene oxide

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

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10.1016/j.electacta.2016.11.110

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abstract = "In this study, by using commercial melamine foam as a starting material, we report a facile method to prepare N-doped carbon framework loaded with graphene (NCF-G), in which graphene nanosheets are homogeneously coated on the N-doped carbon framework. After sulfur is infused into this composite, the electrode delivers an initial capacity of 1,359.7 mA h g−1 at 0.1C (1st cycle), and maintains a specific capacity of 629.3 mA h g−1 for 150 cycles at 0.5C for lithium-sulfur batteries. The improved electrochemical performances are attributed to the capping effect exerted by N-doping for polysulfides and high electrical conductivity of the carbon framework with highly conductive graphene.",

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AU - Piao, Yuanzhe

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2015R1D1A1A01060398). This work was also supported under the framework of international cooperation program managed by National Research Foundation of Korea (NRF-2015K2A2A2002209) and by the Center for Integrated Smart Sensors funded by the Ministry of Science, ICT and Future Planning, Republic of Korea, as Global Frontier Project (CISS-012M3A6A6054186) Publisher Copyright: © 2016 Elsevier Ltd

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N2 - In this study, by using commercial melamine foam as a starting material, we report a facile method to prepare N-doped carbon framework loaded with graphene (NCF-G), in which graphene nanosheets are homogeneously coated on the N-doped carbon framework. After sulfur is infused into this composite, the electrode delivers an initial capacity of 1,359.7 mA h g−1 at 0.1C (1st cycle), and maintains a specific capacity of 629.3 mA h g−1 for 150 cycles at 0.5C for lithium-sulfur batteries. The improved electrochemical performances are attributed to the capping effect exerted by N-doping for polysulfides and high electrical conductivity of the carbon framework with highly conductive graphene.

AB - In this study, by using commercial melamine foam as a starting material, we report a facile method to prepare N-doped carbon framework loaded with graphene (NCF-G), in which graphene nanosheets are homogeneously coated on the N-doped carbon framework. After sulfur is infused into this composite, the electrode delivers an initial capacity of 1,359.7 mA h g−1 at 0.1C (1st cycle), and maintains a specific capacity of 629.3 mA h g−1 for 150 cycles at 0.5C for lithium-sulfur batteries. The improved electrochemical performances are attributed to the capping effect exerted by N-doping for polysulfides and high electrical conductivity of the carbon framework with highly conductive graphene.

KW - hetero atom

KW - lithium-sulfur batteries

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KW - reduced graphene oxide

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SN - 0013-4686

VL - 222

SP - 1345

EP - 1353

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

N-doped Carbon Framework/Reduced Graphene Oxide Nanocomposite as a Sulfur Reservoir for Lithium-Sulfur Batteries

Abstract

Keywords

ASJC Scopus subject areas

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