One-pot low-temperature synthesis of a MnFe2O4–graphene composite for lithium ion battery applications

RSC Advances ◽  
2014 ◽  
Vol 4 (54) ◽  
pp. 28421-28425 ◽  
Author(s):  
Huang Tang ◽  
Peibo Gao ◽  
An Xing ◽  
Shuang Tian ◽  
Zhihao Bao

A MnFe2O4–reduced graphene oxide (rGO) nanocomposite was successfully synthesized by a one-pot low-temperature process by coprecipitation of Mn ions produced in the modified Hummer's method and in situ reduction of GO at 90 °C.

Author(s):  
Rafael Valentin Tolentino-Hernandez ◽  
Enrique Jimenez-Melero ◽  
Francisco Javier Espinosa-Faller ◽  
Cesia Guarneros-Aguilar ◽  
Felipe Caballero-Briones

RSC Advances ◽  
2014 ◽  
Vol 4 (60) ◽  
pp. 31672-31677 ◽  
Author(s):  
Ha-Kyung Roh ◽  
Hyun-Kyung Kim ◽  
Kwang Chul Roh ◽  
Kwang-Bum Kim

NASICON-structured LiTi2(PO4)3/rGO nanocomposite was successfully fabricated by in situ synthesis of a Li–Ti–P–O/rGO precursor by microwave-assisted one-pot method followed by calcination heat treatment. Electrodes prepared from the nanocomposites provide excellent cycling performance and rate capability, indicating great potential for their use in LIBs.


2020 ◽  
Vol 59 (1) ◽  
pp. 477-487 ◽  
Author(s):  
Zhuang Liu ◽  
Haiyang Fu ◽  
Bo Gao ◽  
Yixuan Wang ◽  
Kui Li ◽  
...  

AbstractThis paper studies in-situ synthesis of Fe2O3/reduced graphene oxide (rGO) anode materials by different hydrothermal process.Scanning Electron Microscopy (SEM) analysis has found that different processes can control the morphology of graphene and Fe2O3. The morphologies of Fe2O3 prepared by the hydrothermal in-situ and oleic acid-assisted hydrothermal in-situ methods are mainly composed of fine spheres, while PVP assists The thermal in-situ law presents porous ellipsoids. Graphene exhibits typical folds and small lumps. X-ray diffraction analysis (XRD) analysis results show that Fe2O3/reduced graphene oxide (rGO) is generated in different ways. Also, the material has good crystallinity, and the crystal form of the iron oxide has not been changed after adding GO. It has been reduced, and a characteristic peak appears around 25°, indicating that a large amount of reduced graphene exists. The results of the electrochemical performance tests have found that the active materials prepared in different processes have different effects on the cycle performance of lithium ion batteries. By comprehensive comparison for these three processes, the electro-chemical performance of the Fe2O3/rGO prepared by the oleic acid-assisted hydrothermal method is best.


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