Electrochemical properties of graphene-MnO composite and hollow-structured MnO powders prepared by a simple one-pot spray pyrolysis process

Su Min Lee; Seung Ho Choi; Jung Kul Lee; Yun Chan Kang

doi:10.1016/j.electacta.2014.03.157

Electrochemical properties of graphene-MnO composite and hollow-structured MnO powders prepared by a simple one-pot spray pyrolysis process

Su Min Lee, Seung Ho Choi, Jung Kul Lee, Yun Chan Kang

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

33 Citations (Scopus)

Abstract

Graphene-MnO composite and hollow-structured MnO powders are prepared by a simple one-pot spray pyrolysis process. The graphene content in the graphene-MnO composite powder is estimated to be 10 wt.%. The fine MnO crystals of size several tens of nanometers are uniformly distributed all over the graphene. The BET specific surface areas of the graphene-MnO composite and hollow-structured MnO powders are found to be 20 and 5 m² g^-1, respectively. The graphene-MnO composite powders have high initial discharge and charge capacities of 1207 and 849 mA h g^-1, respectively, at a current density of 500 mA g^-1. The initial discharge and charge capacities of the hollow-structured MnO powders are 1004 and 673 mA h g^-1, respectively. The discharge capacities of the graphene-MnO composite and hollow-structured MnO powders for the 130^th cycle are 1313 and 701 mA h g^-1, respectively.

Original language	English
Pages (from-to)	441-447
Number of pages	7
Journal	Electrochimica Acta
Volume	132
DOIs	https://doi.org/10.1016/j.electacta.2014.03.157
Publication status	Published - 2014 Jun 20
Externally published	Yes

Keywords

Graphene
anode material
lithium ion battery
manganese monoxide
spray pyrolysis

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

UN SDGs

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

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10.1016/j.electacta.2014.03.157

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title = "Electrochemical properties of graphene-MnO composite and hollow-structured MnO powders prepared by a simple one-pot spray pyrolysis process",

abstract = "Graphene-MnO composite and hollow-structured MnO powders are prepared by a simple one-pot spray pyrolysis process. The graphene content in the graphene-MnO composite powder is estimated to be 10 wt.%. The fine MnO crystals of size several tens of nanometers are uniformly distributed all over the graphene. The BET specific surface areas of the graphene-MnO composite and hollow-structured MnO powders are found to be 20 and 5 m2 g-1, respectively. The graphene-MnO composite powders have high initial discharge and charge capacities of 1207 and 849 mA h g-1, respectively, at a current density of 500 mA g-1. The initial discharge and charge capacities of the hollow-structured MnO powders are 1004 and 673 mA h g-1, respectively. The discharge capacities of the graphene-MnO composite and hollow-structured MnO powders for the 130th cycle are 1313 and 701 mA h g-1, respectively.",

keywords = "Graphene, anode material, lithium ion battery, manganese monoxide, spray pyrolysis",

author = "Lee, {Su Min} and Choi, {Seung Ho} and Lee, {Jung Kul} and Kang, {Yun Chan}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2012R1A2A2A02046367). This study was supported by the Converging Research Center Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2011-50210). Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",

year = "2014",

month = jun,

day = "20",

doi = "10.1016/j.electacta.2014.03.157",

language = "English",

volume = "132",

pages = "441--447",

journal = "Electrochimica Acta",

issn = "0013-4686",

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T1 - Electrochemical properties of graphene-MnO composite and hollow-structured MnO powders prepared by a simple one-pot spray pyrolysis process

AU - Lee, Su Min

AU - Choi, Seung Ho

AU - Lee, Jung Kul

AU - Kang, Yun Chan

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2012R1A2A2A02046367). This study was supported by the Converging Research Center Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2011-50210). Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 2014/6/20

Y1 - 2014/6/20

N2 - Graphene-MnO composite and hollow-structured MnO powders are prepared by a simple one-pot spray pyrolysis process. The graphene content in the graphene-MnO composite powder is estimated to be 10 wt.%. The fine MnO crystals of size several tens of nanometers are uniformly distributed all over the graphene. The BET specific surface areas of the graphene-MnO composite and hollow-structured MnO powders are found to be 20 and 5 m2 g-1, respectively. The graphene-MnO composite powders have high initial discharge and charge capacities of 1207 and 849 mA h g-1, respectively, at a current density of 500 mA g-1. The initial discharge and charge capacities of the hollow-structured MnO powders are 1004 and 673 mA h g-1, respectively. The discharge capacities of the graphene-MnO composite and hollow-structured MnO powders for the 130th cycle are 1313 and 701 mA h g-1, respectively.

AB - Graphene-MnO composite and hollow-structured MnO powders are prepared by a simple one-pot spray pyrolysis process. The graphene content in the graphene-MnO composite powder is estimated to be 10 wt.%. The fine MnO crystals of size several tens of nanometers are uniformly distributed all over the graphene. The BET specific surface areas of the graphene-MnO composite and hollow-structured MnO powders are found to be 20 and 5 m2 g-1, respectively. The graphene-MnO composite powders have high initial discharge and charge capacities of 1207 and 849 mA h g-1, respectively, at a current density of 500 mA g-1. The initial discharge and charge capacities of the hollow-structured MnO powders are 1004 and 673 mA h g-1, respectively. The discharge capacities of the graphene-MnO composite and hollow-structured MnO powders for the 130th cycle are 1313 and 701 mA h g-1, respectively.

KW - Graphene

KW - anode material

KW - lithium ion battery

KW - manganese monoxide

KW - spray pyrolysis

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JO - Electrochimica Acta

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Electrochemical properties of graphene-MnO composite and hollow-structured MnO powders prepared by a simple one-pot spray pyrolysis process

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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