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.
| Original language | English |
|---|---|
| Pages (from-to) | 452-459 |
| Number of pages | 8 |
| Journal | Electrochimica Acta |
| Volume | 120 |
| DOIs | |
| Publication status | Published - 2014 Feb 20 |
| Externally published | Yes |
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Keywords
- anode
- doping
- graphene
- lithium ion battery
- manganese oxide
ASJC Scopus subject areas
- Chemical Engineering(all)
- Electrochemistry
Cite this
In situ hydrothermal synthesis of Mn3O4 nanoparticles on nitrogen-doped graphene as high-performance anode materials for lithium ion batteries. / Park, Seung Keun; Jin, Aihua; Yu, Seung-Ho; Ha, Jeonghyun; Jang, Byungchul; Bong, Sungyool; Woo, Seunghee; Sung, Yung Eun; Piao, Yuanzhe.
In: Electrochimica Acta, Vol. 120, 20.02.2014, p. 452-459.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - In situ hydrothermal synthesis of Mn3O4 nanoparticles on nitrogen-doped graphene as high-performance anode materials for lithium ion batteries
AU - Park, Seung Keun
AU - Jin, Aihua
AU - Yu, Seung-Ho
AU - Ha, Jeonghyun
AU - Jang, Byungchul
AU - Bong, Sungyool
AU - Woo, Seunghee
AU - Sung, Yung Eun
AU - Piao, Yuanzhe
PY - 2014/2/20
Y1 - 2014/2/20
N2 - 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.
AB - 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.
KW - anode
KW - doping
KW - graphene
KW - lithium ion battery
KW - manganese oxide
UR - http://www.scopus.com/inward/record.url?scp=84893016291&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893016291&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2013.12.018
DO - 10.1016/j.electacta.2013.12.018
M3 - Article
AN - SCOPUS:84893016291
VL - 120
SP - 452
EP - 459
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
ER -