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나노입자 연구단
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In situ hydrothermal synthesis of Mn3O4 nanoparticles on nitrogen-doped graphene as high-performance anode materials for lithium ion batteries

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Title
In situ hydrothermal synthesis of Mn3O4 nanoparticles on nitrogen-doped graphene as high-performance anode materials for lithium ion batteries
Author(s)
Seung-Keun Park; Aihua Jin; Seung-Ho Yu; Ha J.; Jang B.; Bong S.; Woo S.; Yung Eun Sung; Piao Y.
Publication Date
2014-02
Journal
ELECTROCHIMICA ACTA, v.120, no., pp.452 - 459
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
Developing new electrode materials with high specific capacity for excellent lithium ion storage properties is very desirable. In this paper, we introduce a simple hydrothermal method for the growth of Mn3O 4 nanoparticles onto nitrogen-doped graphene (N-doped graphene) for high-performance lithium ion battery (LIB) anodes. Hydrazine plays a fundamental role in the formation of such nanostructures as it can act both as a reducing agent and as a nitrogen source. In the synthesized composite, highly crystalline Mn3O4 nanoparticles with average sizes of 20-50 nm are homogeneously dispersed on both sides of the N-doped graphene. The nitrogen content in the doped graphene is confirmed by elemental analyzer, and 2 wt% of the sample is found to be composed of nitrogen element. The as-prepared Mn 3O4/N-doped graphene composites exhibit remarkable electrochemical performance, including high reversible specific capacity, outstanding cycling stability, and excellent rate capability (approximately 400 mA h g-1 at 2.0 A g-1) when used as the anode material for LIBs. The improvement in the electrochemical properties of the material can be attributed to graphene, which acts as both an electron conductor and a volume buffer layer, and nitrogen doping allows for fast electron and ion transfer by decreasing the energy barrier. This type of metal oxide/N-doped graphene composites can be promising candidates for high-performance anode materials for LIBs. © 2013 Elsevier Ltd.
URI
https://pr.ibs.re.kr/handle/8788114/1119
ISSN
0013-4686
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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In Situ Hydrothermal Synthesis of Mn3O4 Nanoparticles on Nitrogen-doped Graphene as High-Performance Anode materials for Lithium Ion Batteries.pdfDownload

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