scholarly journals Tin-based materials supported on nitrogen-doped reduced graphene oxide towards their application in lithium-ion batteries

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 (80) ◽  
pp. 42412-42417 ◽  
Author(s):  
Meng Du ◽  
Jing Sun ◽  
Jie Chang ◽  
Fan Yang ◽  
Liangjing Shi ◽  
...  

A new route has been developed to synthesize nitrogen-doped reduced graphene oxide (N-RGO) with excellent lithium storage properties.


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.


2014 ◽  
Vol 118 (49) ◽  
pp. 28502-28508 ◽  
Author(s):  
Yan Xu ◽  
Xiaoshu Zhu ◽  
Xiaosi Zhou ◽  
Xia Liu ◽  
Yunxia Liu ◽  
...  

2017 ◽  
Vol 28 (24) ◽  
pp. 18994-19002 ◽  
Author(s):  
Nutpaphat Jarulertwathana ◽  
Viratchara Laokawee ◽  
Warapa Susingrat ◽  
Seong-Ju Hwang ◽  
Thapanee Sarakonsri

2018 ◽  
Vol 283 ◽  
pp. 46-54 ◽  
Author(s):  
Viratchara Laokawee ◽  
Nutpaphat Jarulertwathana ◽  
Thanapat Autthawong ◽  
Takuya Masuda ◽  
Yothin Chimupala ◽  
...  

Silicon (Si) and Tin (Sn) are promising materials for anodes in lithium-ion batteries due to their high theoretical capacity and abundance of Si on earth. Si can be derived from rice husk which is the main agricultural byproduct in Thailand. However, the challenge of using these materials in lithium-ion batteries is the large volume expansion during charge-discharge process which leads to pulverization of electrodes. The effective solution is to combine these metals as composite with carbon supporter. Nitrogen-doped reduced graphene oxide (NrGO) has been used as carbon supporter in this research because of its high surface area, electrical conductivity and rate of electron transfer. To confirm phases of products, X-rays diffraction techniques (XRD) was measured. The results show that there were peaks of Si, Sn and carbon in XRD patterns. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to illustrate the morphology of prepared composites. From SEM and TEM results, there were small-sized particles of Si and Sn dispersed randomly on NrGO sheets. Furthermore, electrochemical properties of these products were measured to confirm their efficiency as anode materials in lithium-ion batteries by coin cell assembly. The prepared composite can deliver the highest initial capacity of 1600 mA h g-1 and expected to use as anode materials in the next generation lithium-ion batteries.


RSC Advances ◽  
2016 ◽  
Vol 6 (80) ◽  
pp. 77100-77104 ◽  
Author(s):  
S. Soren ◽  
B. D. Mohaptra ◽  
S. Mishra ◽  
A. K. Debnath ◽  
D. K. Aswal ◽  
...  

Ceria (CeO2) nanoparticles with ellipsoid shape are coupled on a nitrogen doped reduced graphene oxide sheet through a single step solvothermal procedure.


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