Ultra-small CoO nanocrystals anchored on reduced graphene oxide for enhanced lithium storage in lithium ion batteries

2017 ◽  
Vol 7 (2) ◽  
pp. 236-244 ◽  
Author(s):  
Kartick Bindumadhavan ◽  
Pei-Yi Chang ◽  
Ming-Hsiu Yeh ◽  
Ruey-an Doong

Abstract

2014 ◽  
Vol 29 (5) ◽  
pp. 617-624 ◽  
Author(s):  
Haijiao Zhang ◽  
Panpan Xu ◽  
Yang Ni ◽  
Hongya Geng ◽  
Guanghong Zheng ◽  
...  

Abstract


2016 ◽  
Vol 34 (3) ◽  
pp. 481-486 ◽  
Author(s):  
Łukasz Majchrzycki ◽  
Mariusz Walkowiak ◽  
Agnieszka Martyła ◽  
Mikhail Y. Yablokov ◽  
Marek Nowicki ◽  
...  

AbstractNowadays reduced graphene oxide (rGO) is regarded as a highly interesting material which is appropriate for possible applications in electrochemistry, especially in lithium-ion batteries (LIBs). Several methods were proposed for the preparation of rGO-based electrodes, resulting in high-capacity LIBs anodes. However, the mechanism of lithium storage in rGO and related materials is still not well understood. In this work we focused on the proposed mechanism of favorable bonding sites induced by additional functionalities attached to the graphene planes. This mechanism might increase the capacity of electrodes. In order to verify this hypothesis the composite of non-reduced graphene oxide (GO) with multiwalled carbon nanotubes electrodes was fabricated. Electrochemical properties of GO composite anodes were studied in comparison with similarly prepared electrodes based on rGO. This allowed us to estimate the impact of functional groups on the reversible capacity changes. As a result, it was shown that oxygen containing functional groups of GO do not create, in noticeable way, additional active sites for the electrochemical reactions of lithium storage, contrary to what has been postulated previously.


2018 ◽  
Vol 54 (81) ◽  
pp. 11415-11418 ◽  
Author(s):  
Dabei Wu ◽  
Heng Li ◽  
Ruguang Li ◽  
Yulian Hu ◽  
Xianluo Hu

Copper rhodizonate complexes grown on reduced graphene oxide exhibit outstanding electrochemical lithium-storage performances.


2017 ◽  
Vol 41 (15) ◽  
pp. 7102-7107 ◽  
Author(s):  
Lingling Zhang ◽  
Danhua Ge ◽  
Hongbo Geng ◽  
Junwei Zheng ◽  
Xueqin Cao ◽  
...  

The porous Mn2O3 nanospheres embedded in reduced graphene oxide delivered superior lithium storage ability including high reversible specific capacity, cycling stability and rate performances as an anode material in lithium-ion batteries.


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.


2016 ◽  
Vol 4 (40) ◽  
pp. 15302-15308 ◽  
Author(s):  
Zhigao Luo ◽  
Jiang Zhou ◽  
Lirong Wang ◽  
Guozhao Fang ◽  
Anqiang Pan ◽  
...  

We report the synthesis of a novel 2D hybrid nanosheet constructed by few layered MoSe2 grown on reduced graphene oxide (rGO), which exhibits excellent electrochemical performance as anodes for lithium ion batteries.


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