Sub-10-nm Co 3 O 4 nanoparticles/graphene composites as high-performance anodes for lithium storage

Kyunghoon Jang, Deuk Kyu Hwang, Francis Malar Auxilia, Jaewon Jang, Hayong Song, Byeong Yun Oh, Yoongon Kim, Junsik Nam, Ji Woong Park, Sunho Jeong, Sun Sook Lee, Sungho Choi, In S. Kim, Won Bae Kim, Jae Min Myoung, Moon Ho Ham

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

To improve the electrochemical performance of Co 3 O 4 /graphene composites towards high-performance lithium ion batteries, various facile chemical methods have been developed to form hybrid Co 3 O 4 /graphene composites, but the compositions of these composites were considerably different. In this study, a two-step solvothermal synthesis method was employed to accurately control the concentration of Co 3 O 4 nanoparticles (NPs) with particle sizes less than 10 nm in the composite. The Co 3 O 4 /reduced graphene oxide (RGO) composites exhibited the highest reversible capacity of 1600 mAh g −1 at 43 wt% Co 3 O 4  NPs. The synergic effects of the sub-10-nm sized Co 3 O 4 and the RGO sheets resulted in improved reversible capacity, cycling stability, and rate capability, which are caused by a large number of active sites and the short diffusion pathways provided by the nano-sized Co 3 O 4 , as well as the elastic buffer space and conductive pathway provided by the RGO sheets.

Original languageEnglish
Pages (from-to)15-21
Number of pages7
JournalChemical Engineering Journal
Volume309
DOIs
Publication statusPublished - 2017 Feb 1

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lithium
Lithium
Graphene
Anodes
Nanoparticles
Oxides
Composite materials
oxide
chemical method
Buffers
Particle size
particle size
nanoparticle
ion
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Jang, Kyunghoon ; Hwang, Deuk Kyu ; Auxilia, Francis Malar ; Jang, Jaewon ; Song, Hayong ; Oh, Byeong Yun ; Kim, Yoongon ; Nam, Junsik ; Park, Ji Woong ; Jeong, Sunho ; Lee, Sun Sook ; Choi, Sungho ; Kim, In S. ; Kim, Won Bae ; Myoung, Jae Min ; Ham, Moon Ho. / Sub-10-nm Co 3 O 4 nanoparticles/graphene composites as high-performance anodes for lithium storage In: Chemical Engineering Journal. 2017 ; Vol. 309. pp. 15-21.
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abstract = "To improve the electrochemical performance of Co 3 O 4 /graphene composites towards high-performance lithium ion batteries, various facile chemical methods have been developed to form hybrid Co 3 O 4 /graphene composites, but the compositions of these composites were considerably different. In this study, a two-step solvothermal synthesis method was employed to accurately control the concentration of Co 3 O 4 nanoparticles (NPs) with particle sizes less than 10 nm in the composite. The Co 3 O 4 /reduced graphene oxide (RGO) composites exhibited the highest reversible capacity of 1600 mAh g −1 at 43 wt{\%} Co 3 O 4  NPs. The synergic effects of the sub-10-nm sized Co 3 O 4 and the RGO sheets resulted in improved reversible capacity, cycling stability, and rate capability, which are caused by a large number of active sites and the short diffusion pathways provided by the nano-sized Co 3 O 4 , as well as the elastic buffer space and conductive pathway provided by the RGO sheets.",
author = "Kyunghoon Jang and Hwang, {Deuk Kyu} and Auxilia, {Francis Malar} and Jaewon Jang and Hayong Song and Oh, {Byeong Yun} and Yoongon Kim and Junsik Nam and Park, {Ji Woong} and Sunho Jeong and Lee, {Sun Sook} and Sungho Choi and Kim, {In S.} and Kim, {Won Bae} and Myoung, {Jae Min} and Ham, {Moon Ho}",
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Jang, K, Hwang, DK, Auxilia, FM, Jang, J, Song, H, Oh, BY, Kim, Y, Nam, J, Park, JW, Jeong, S, Lee, SS, Choi, S, Kim, IS, Kim, WB, Myoung, JM & Ham, MH 2017, ' Sub-10-nm Co 3 O 4 nanoparticles/graphene composites as high-performance anodes for lithium storage ', Chemical Engineering Journal, vol. 309, pp. 15-21. https://doi.org/10.1016/j.cej.2016.10.009

Sub-10-nm Co 3 O 4 nanoparticles/graphene composites as high-performance anodes for lithium storage . / Jang, Kyunghoon; Hwang, Deuk Kyu; Auxilia, Francis Malar; Jang, Jaewon; Song, Hayong; Oh, Byeong Yun; Kim, Yoongon; Nam, Junsik; Park, Ji Woong; Jeong, Sunho; Lee, Sun Sook; Choi, Sungho; Kim, In S.; Kim, Won Bae; Myoung, Jae Min; Ham, Moon Ho.

In: Chemical Engineering Journal, Vol. 309, 01.02.2017, p. 15-21.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Sub-10-nm Co 3 O 4 nanoparticles/graphene composites as high-performance anodes for lithium storage

AU - Jang, Kyunghoon

AU - Hwang, Deuk Kyu

AU - Auxilia, Francis Malar

AU - Jang, Jaewon

AU - Song, Hayong

AU - Oh, Byeong Yun

AU - Kim, Yoongon

AU - Nam, Junsik

AU - Park, Ji Woong

AU - Jeong, Sunho

AU - Lee, Sun Sook

AU - Choi, Sungho

AU - Kim, In S.

AU - Kim, Won Bae

AU - Myoung, Jae Min

AU - Ham, Moon Ho

PY - 2017/2/1

Y1 - 2017/2/1

N2 - To improve the electrochemical performance of Co 3 O 4 /graphene composites towards high-performance lithium ion batteries, various facile chemical methods have been developed to form hybrid Co 3 O 4 /graphene composites, but the compositions of these composites were considerably different. In this study, a two-step solvothermal synthesis method was employed to accurately control the concentration of Co 3 O 4 nanoparticles (NPs) with particle sizes less than 10 nm in the composite. The Co 3 O 4 /reduced graphene oxide (RGO) composites exhibited the highest reversible capacity of 1600 mAh g −1 at 43 wt% Co 3 O 4  NPs. The synergic effects of the sub-10-nm sized Co 3 O 4 and the RGO sheets resulted in improved reversible capacity, cycling stability, and rate capability, which are caused by a large number of active sites and the short diffusion pathways provided by the nano-sized Co 3 O 4 , as well as the elastic buffer space and conductive pathway provided by the RGO sheets.

AB - To improve the electrochemical performance of Co 3 O 4 /graphene composites towards high-performance lithium ion batteries, various facile chemical methods have been developed to form hybrid Co 3 O 4 /graphene composites, but the compositions of these composites were considerably different. In this study, a two-step solvothermal synthesis method was employed to accurately control the concentration of Co 3 O 4 nanoparticles (NPs) with particle sizes less than 10 nm in the composite. The Co 3 O 4 /reduced graphene oxide (RGO) composites exhibited the highest reversible capacity of 1600 mAh g −1 at 43 wt% Co 3 O 4  NPs. The synergic effects of the sub-10-nm sized Co 3 O 4 and the RGO sheets resulted in improved reversible capacity, cycling stability, and rate capability, which are caused by a large number of active sites and the short diffusion pathways provided by the nano-sized Co 3 O 4 , as well as the elastic buffer space and conductive pathway provided by the RGO sheets.

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M3 - Article

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SP - 15

EP - 21

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

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