High Reversible Capacity of Nitrogen-Doped Graphene as an Anode Material for Lithium-Ion Batteries

2014 ◽  
Vol 1070-1072 ◽  
pp. 459-464
Author(s):  
Chang Jing Fu ◽  
Shuang Li ◽  
Qian Wang

Nitrogen-doped graphene (N-rGO) was synthesized in the process of preparation of reduced graphene oxide from the expanded graphite through the improved Hummers’ method. The morphology, structure and composition of nitrogen-doped graphene oxide (GO) and N-rGO were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The nitrogen content of N-rGO was approximately 5 at.%. The electrochemical performances of N-rGO as anode materials for lithium-ion batteries were evaluated in coin-type cells versus metallic lithium. Results showed that the obtained N-rGO exhibited a higher reversible specific capacity of 519 mAh g-1 at a current density of 100 mA⋅g-1 and 207.5 mAh⋅g-1 at a current density of 2000 mA⋅g-1. The excellent cycling stability and high-rate capability of N-rGO as anodes of lithium-ion battery were attributed to the large number of surface defects caused by the nitrogen doping, which facilitates the fast transport of Li-ion and electron on the interface of electrolyte/electrode.

2017 ◽  
Vol 41 (24) ◽  
pp. 15517-15527 ◽  
Author(s):  
Sivalingam Ramesh ◽  
K. Karuppasamy ◽  
Sabeur Msolli ◽  
Hyun-Seok Kim ◽  
Heung Soo Kim ◽  
...  

A nanocrystalline NiO@MnO2/NGO hybrid composite electrode showed specific capacitance of 1490 Fg−1 at a current density of 0.5 Ag−1 and retains 98% up to 2000 cycles indicating its good cyclic stability.


RSC Advances ◽  
2017 ◽  
Vol 7 (84) ◽  
pp. 53126-53134 ◽  
Author(s):  
Xiaoxia Zuo ◽  
Bao Li ◽  
Kun Chang ◽  
Hongwei Tang ◽  
Zhaorong Chang

Recently, nitrogen-doped graphene has attracted significant attention for application as an anode in lithium-ion batteries due to effective modulation of the electronic properties of graphene.


RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 64756-64762 ◽  
Author(s):  
Yue Pan ◽  
Ke Ye ◽  
Dianxue Cao ◽  
Yiju Li ◽  
Yuanyuan Dong ◽  
...  

A nitrogen-doped graphene oxide/copper oxide nanocomposite is prepared through a modified Hummers method followed by heat treatment.


2015 ◽  
Vol 8 (3) ◽  
pp. 869-875 ◽  
Author(s):  
Bo Wang ◽  
Wael Al Abdulla ◽  
Dianlong Wang ◽  
X. S. Zhao

LFP@N-GA with (010) facet oriented LFP NPs embedded in N-GA provides both rapid Li+ and electron pathways in the electrode as well as short Li+ diffusion length in LFP crystals.


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