Sub-10-nm Co3O4 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

doi:10.1016/j.cej.2016.10.009

Sub-10-nm Co₃O₄ 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

Department of Materials Science and Engineering

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

31 Citations (Scopus)

Abstract

To improve the electrochemical performance of Co₃O₄/graphene composites towards high-performance lithium ion batteries, various facile chemical methods have been developed to form hybrid Co₃O₄/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 Co₃O₄ nanoparticles (NPs) with particle sizes less than 10 nm in the composite. The Co₃O₄/reduced graphene oxide (RGO) composites exhibited the highest reversible capacity of 1600 mAh g⁻¹ at 43 wt% Co₃O₄ NPs. The synergic effects of the sub-10-nm sized Co₃O₄ 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 Co₃O₄, as well as the elastic buffer space and conductive pathway provided by the RGO sheets.

Original language	English
Pages (from-to)	15-21
Number of pages	7
Journal	Chemical Engineering Journal
Volume	309
DOIs	https://doi.org/10.1016/j.cej.2016.10.009
Publication status	Published - 2017 Feb 1

Bibliographical note

Funding Information:
This work was supported by Korea Electric Power Corporation through Korea Electrical Engineering & Science Research Institute, Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (2013R1A1A1011215), the 2nd phase of the Fundamental R&D Programs for Core Technology of Materials funded by Ministry of Trade, Industry and Energy (2015-2016), Plant Research Program funded by Ministry of Land, Infrastructure and Transport and the Korea Research Institute of Chemical Technology(KRICT).

Publisher Copyright:
© 2016 Elsevier B.V.

All Science Journal Classification (ASJC) codes

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

UN SDGs

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

Access to Document

10.1016/j.cej.2016.10.009

Cite this

Jang, K., Hwang, D. K., Auxilia, F. M., Jang, J., Song, H., Oh, B. Y., Kim, Y., Nam, J., Park, J. W., Jeong, S., Lee, S. S., Choi, S., Kim, I. S., Kim, W. B., Myoung, J. M., & Ham, M. H. (2017). Sub-10-nm Co₃O₄ nanoparticles/graphene composites as high-performance anodes for lithium storage. Chemical Engineering Journal, 309, 15-21. https://doi.org/10.1016/j.cej.2016.10.009

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title = "Sub-10-nm Co3O4 nanoparticles/graphene composites as high-performance anodes for lithium storage",

abstract = "To improve the electrochemical performance of Co3O4/graphene composites towards high-performance lithium ion batteries, various facile chemical methods have been developed to form hybrid Co3O4/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 Co3O4 nanoparticles (NPs) with particle sizes less than 10 nm in the composite. The Co3O4/reduced graphene oxide (RGO) composites exhibited the highest reversible capacity of 1600 mAh g−1 at 43 wt% Co3O4 NPs. The synergic effects of the sub-10-nm sized Co3O4 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 Co3O4, 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}",

note = "Funding Information: This work was supported by Korea Electric Power Corporation through Korea Electrical Engineering & Science Research Institute, Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (2013R1A1A1011215), the 2nd phase of the Fundamental R&D Programs for Core Technology of Materials funded by Ministry of Trade, Industry and Energy (2015-2016), Plant Research Program funded by Ministry of Land, Infrastructure and Transport and the Korea Research Institute of Chemical Technology(KRICT). Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

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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

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N2 - To improve the electrochemical performance of Co3O4/graphene composites towards high-performance lithium ion batteries, various facile chemical methods have been developed to form hybrid Co3O4/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 Co3O4 nanoparticles (NPs) with particle sizes less than 10 nm in the composite. The Co3O4/reduced graphene oxide (RGO) composites exhibited the highest reversible capacity of 1600 mAh g−1 at 43 wt% Co3O4 NPs. The synergic effects of the sub-10-nm sized Co3O4 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 Co3O4, as well as the elastic buffer space and conductive pathway provided by the RGO sheets.

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