Fabrication of flexible reduced graphene oxide–TiO2 freestanding films for supercapacitor application

RSC Advances ◽  
2015 ◽  
Vol 5 (13) ◽  
pp. 9904-9911 ◽  
Author(s):  
Jinsu Kim ◽  
Wai-Hwa Khoh ◽  
Boon-Hong Wee ◽  
Jong-Dal Hong
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Properties ◽  
Reduced Graphene Oxide ◽  
Composite Electrode ◽  
Layer Structure ◽  
Free Standing ◽  
Vacuum Filtration ◽  
Supercapacitor Application ◽  
Filtration System ◽  
Reduced Graphene

A rGO/TiO2 free standing film has been fabricated via a simple and facile vacuum filtration system. The composite electrode showed improved electrochemical properties compared to the pure rGO due to the highly expanded layer-structure.

Synergistic effects of a novel free-standing reduced graphene oxide film and surface coating fibronectin on morphology, adhesion and proliferation of mesenchymal stem cells

2015 ◽  
Vol 3 (21) ◽  
pp. 4338-4344 ◽  
Author(s):  
Lin Jin ◽  
Zhiping Zeng ◽  
Shreyas Kuddannaya ◽  
Dan Yue ◽  
Jingnan Bao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Surface Coating ◽  
Synergistic Effects ◽  
Chemical Reduction ◽  
Nanofiber Membrane ◽  
Free Standing ◽  
Vacuum Filtration ◽  
Reduced Graphene

Fabrication of free-standing reduced graphene oxide (RGO) films by vacuum filtration of graphene oxide aqueous solution through a nanofiber membrane in combination with chemical reduction.

scholarly journals Synthesis and characterization of free-standing activated carbon/reduced graphene oxide film electrodes for flexible supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (71) ◽  
pp. 45066-45074 ◽  
Author(s):  
Lanshu Xu ◽  
Yue Li ◽  
Mengying Jia ◽  
Qiang Zhao ◽  
Xiaojuan Jin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Activated Carbon ◽  
Reduced Graphene Oxide ◽  
Composite Films ◽  
Free Standing ◽  
Filtration Process ◽  
Vacuum Filtration ◽  
Reduced Graphene ◽  
Binder Free

Free-standing, binder-free and flexible activated carbon/reduced graphene oxide (AC/rGO) composite films with various ratios were fabricated via a facile vacuum-filtration process.

Hydrothermal Synthesis and Electrochemical Properties of CoS2–Reduced Graphene Oxide Nanocomposite for Supercapacitor Application

2017 ◽  
Vol 17 (01n02) ◽  
pp. 1760020 ◽  
Author(s):  
Sandhya Venkateshalu ◽  
Dinesh Rangappa ◽  
Andrews Nirmala Grace
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Properties ◽  
Reduced Graphene Oxide ◽  
Test Results ◽  
Supercapacitor Application ◽  
Cobalt Disulfide ◽  
Reduced Graphene ◽  
Uniform Deposition ◽  
A Current ◽  
Charge Discharge

A Cobalt disulfide–reduced graphene oxide (CoS2-RGO) nanocomposite was prepared by a simple hydrothermal method and the prepared nanocomposite was characterized using various techniques like XRD, SEM and FTIR. The results of these techniques indicated the uniform deposition of CoS2 nanoparticles on Graphene sheets. Further, the prepared nanocomposites were tested for its activity towards energy storage and the test results showed a specific capacitance of 28[Formula: see text]F/g in an aqueous 20% KOH electrolyte at a current density of 0.5[Formula: see text]A/g. All these materials showed highly reversible charge–discharge cycles. The overall electrochemical performance of this composite is shown to be drastically improved when compared to bare CoS2 nanoparticles. Thus with the good electrochemical properties, CoS2–RGO nanocomposites could be effectively used as an electrode material for supercapacitors.

scholarly journals Free-standing reduced graphene oxide (rGO) membrane for salt-rejecting solar desalination via size effect

Nanophotonics ◽  
2020 ◽  
Vol 9 (15) ◽  
pp. 4601-4608 ◽  
Author(s):  
Pengyu Zhuang ◽  
Hanyu Fu ◽  
Ning Xu ◽  
Bo Li ◽  
Jun Xu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Conversion Efficiency ◽  
High Salinity ◽  
Interlayer Spacing ◽  
Structural Instability ◽  
Solar Thermal ◽  
Free Standing ◽  
Solar Desalination ◽  
Reduced Graphene

AbstractInterfacial solar vapor generation has revived the solar-thermal-based desalination due to its high conversion efficiency of solar energy. However, most solar evaporators reported so far suffer from severe salt-clogging problems during solar desalination, leading to performance degradation and structural instability. Here, we demonstrate a free-standing salt-rejecting reduced graphene oxide (rGO) membrane serving as an efficient, stable, and antisalt-fouling solar evaporator. The evaporation rate of the membrane reaches up to 1.27 kg m−2 h−1 (solar–thermal conversion efficiency ∼79%) under one sun, out of 3.5 wt% brine. More strikingly, due to the tailored narrow interlayer spacing, the rGO membrane can effectively reject ions, preventing salt accumulation even for high salinity brine (∼8 wt% concentration). With enabled salt-antifouling capability, flexibility, as well as stability, our rGO membrane serves as a promising solar evaporator for high salinity brine treatment.

Synthesis and characterization of reduced graphene oxide by cobalt oxide composite electrode

2020 ◽  
Author(s):  
S. Veeresh ◽  
H. Ganesh ◽  
Y. S. Nagaraj ◽  
M. Vandana ◽  
S. P. Ashokkumar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cobalt Oxide ◽  
Composite Electrode ◽  
Synthesis And Characterization ◽  
Oxide Composite ◽  
Reduced Graphene
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