One-step preparation of reduced graphene oxide/carbon nanotube hybrid thin film by electrostatic spray deposition for supercapacitor applications

2014 ◽  
Vol 20 (5) ◽  
pp. 975-981 ◽  
Author(s):  
Hee-Chang Youn ◽  
Seong-Min Bak ◽  
Sang-Hoon Park ◽  
Seung-Beom Yoon ◽  
Kwang Chul Roh ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Spray Deposition ◽  
Hybrid Thin Film ◽  
Electrostatic Spray Deposition ◽  
Reduced Graphene ◽  
One Step ◽  
Electrostatic Spray ◽  
Supercapacitor Applications

scholarly journals Free-standing Reduced Graphene Oxide/Carbon Nanotube Paper for Flexible Sodium-ion Battery Applications

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 1014
Author(s):  
Yong Hao ◽  
Chunlei Wang
Keyword(s):  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
Active Sites ◽  
Electrode Materials ◽  
Spray Deposition ◽  
Sodium Ion ◽  
Free Standing ◽  
Electrostatic Spray Deposition ◽  
Reduced Graphene

We propose a flexible, binder-free and free-standing carbonaceous paper fabricated via electrostatic spray deposition using reduced graphene oxide/carbon nanotube (rGO/CNT) as a promising electrode material for flexible sodium-ion batteries (NIBs). The as-prepared rGO/CNT paper exhibits a three-dimensional (3D) layered structure by employing rGO as conductive frameworks to provide sodium-storage active sites and CNT as spacer to increase rGO interlayer distance and benefit the diffusion kinetics of sodium ions. Consequently, the rGO/CNT paper delivers an enhanced sodium ion storage capacity of 166.8 mAh g−1 at 50 mA g−1, retaining an average capacity of 101.4 mAh g−1 when current density sets back 100 mA g−1 after cycling at various current rates. An average capacity of 50 mAh g−1 at 200 mA g−1 was stabilized when cycling up to 300 cycles. The well-maintained electrochemical performance of free-standing rGO/CNT paper is due to the well-established hybrid 3D nanostructures, which demonstrates our carbon based material fabricated by a facile approach can be applied as one of the high-performance and low-cost electrode materials for applications in flexible energy storage devices.

scholarly journals A Humidity Sensor Based on Silver Nanoparticles Thin Film Prepared by Electrostatic Spray Deposition Process

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Thutiyaporn Thiwawong ◽  
Korakot Onlaor ◽  
Benchapol Tunhoo
Keyword(s):  
Thin Film ◽  
Silver Nanoparticles ◽  
Humidity Sensor ◽  
Spray Deposition ◽  
Complex Impedance ◽  
Impedance Analysis ◽  
Deposition Process ◽  
Electrostatic Spray Deposition ◽  
Complex Impedance Analysis ◽  
Electrostatic Spray

In this work, thin film of silver nanoparticles for humidity sensor application was deposited by electrostatic spray deposition technique. The influence of the deposition times on properties of films was studied. The crystal structures of sample films, their surface morphology, and optical properties have been investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and UV-VIS spectrophotometer, respectively. The crystalline structure of silver nanoparticles thin film was found in the orientation of (100) and (200) planes of cubic structure at diffraction angles 2θ  =  38.2° and 44.3°, respectively. Moreover, the silver nanoparticles thin films humidity sensor was fabricated onto the interdigitated electrodes. The sensor exhibited the humidity adsorption and desorption properties. The sensing mechanisms of the device were also elucidated by complex impedance analysis.

One-step hydrothermal synthesis of porous Ti3C2Tz MXene/rGO gels for supercapacitor applications

Nanoscale ◽  
2021 ◽  
Author(s):  
Sanjit Saha ◽  
Kailash Arole ◽  
Miladin Radovic ◽  
Jodie Lutkenhaus ◽  
Micah Green
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Synthesis ◽  
Titanium Carbide ◽  
Porous Structure ◽  
Hydrothermal Process ◽  
Average Pore ◽  
Reduced Graphene ◽  
One Step ◽  
Supercapacitor Applications ◽  
Highly Porous

Titanium carbide/reduced graphene oxide (Ti3C2Tz/rGO) gels were prepared by a one-step hydrothermal process. The gels show a highly porous structure with a surface area of ~224 m2/g and average pore...

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