Electrical Conductivity, Chemistry, and Bonding Alternations under Graphene Oxide to Graphene Transition As Revealed by In Situ TEM

ACS Nano ◽  
2011 ◽  
Vol 5 (6) ◽  
pp. 4401-4406 ◽  
Author(s):  
Zhi Xu ◽  
Yoshio Bando ◽  
Lei Liu ◽  
Wenlong Wang ◽  
Xuedong Bai ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
In Situ Tem

Chemically reduced graphene oxide-coated knitted fabric imparted conductivity and outstanding hydrophobicity

2021 ◽  
pp. 004051752199547
Author(s):  
Min Hou ◽  
Xinghua Hong ◽  
Yanjun Tang ◽  
Zimin Jin ◽  
Chengyan Zhu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Chemical Reduction ◽  
Knitted Fabric ◽  
Mesh Structure ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide ◽  
Modified Hummers Method

Functionalized knitted fabric, as a kind of flexible, wearable, and waterproof material capable of conductivity, sensitivity and outstanding hydrophobicity, is valuable for multi-field applications. Herein, the reduced graphene oxide (RGO)-coated knitted fabric (polyester/spandex blended) is prepared, which involves the use of graphite oxide (GO) by modified Hummers method and in-situ chemical reduction with hydrazine hydrate. The treated fabric exhibits a high electrical conductivity (202.09 S/cm) and an outstanding hydrophobicity (140°). The outstanding hydrophobicity is associated with the morphology of the fabric and fiber with reference to pseudo-infiltration. These properties can withstand repeated bending and washing without serious deterioration, maintaining good electrical conductivity (35.70 S/cm) and contact angle (119.39°) after eight standard washing cycles. The material, which has RGO architecture and continuous loop mesh structure, can find wide use in smart garment applications.

A viable method to enhance the electrical conductivity of CNT bundles: direct in situ TEM evaluation

Nanoscale ◽  
2020 ◽  
Vol 12 (24) ◽  
pp. 13095-13102
Author(s):  
Xiaojing Gong ◽  
Hui Zhang ◽  
Zhehao Sun ◽  
Xiaoliang Zhang ◽  
Jing Xu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Joule Heating ◽  
In Situ Tem ◽  
Theoretical Estimation ◽  
Microscopic Scale ◽  
The Relationship ◽  
Viable Method

We report in situ TEM observations and theoretical estimation of the relationship between Joule-heating induced temperature, electrical conductivity and the amount of nanowelding in pristine CNT assemblies at the microscopic scale.

scholarly journals In-situ reduction by Joule heating and measurement of electrical conductivity of graphene oxide in a transmission electron microscope

2D Materials ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 031001
Author(s):  
Simon Hettler ◽  
David Sebastian ◽  
Mario Pelaez-Fernandez ◽  
Ana M Benito ◽  
Wolfgang K Maser ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Joule Heating ◽  
In Situ Reduction ◽  
Transmission Electron

In situ TEM study of lithiation into a PPy coated α-MnO2/graphene foam freestanding electrode

2018 ◽  
Vol 2 (8) ◽  
pp. 1481-1488 ◽  
Author(s):  
Mohammad Akbari Garakani ◽  
Sara Abouali ◽  
Jiang Cui ◽  
Jang-Kyo Kim
Keyword(s):  
Electrical Conductivity ◽  
Lithium Ion Batteries ◽  
Large Volume ◽  
Volume Expansion ◽  
Low Cost ◽  
Lithium Ion ◽  
In Situ Tem ◽  
The Many ◽  
Charge Discharge

Even with the many desirable properties, natural abundance and low cost of α-MnO2, its application as an anode in lithium-ion batteries has been limited because of its low intrinsic electrical conductivity and large volume expansion occurring during charge/discharge cycles.

Revealing high temperature stability of platinum nanocatalysts deposited on graphene oxide by in-situ TEM

2020 ◽  
Vol 170 ◽  
pp. 110706
Author(s):  
Zhehan Ying ◽  
Jiangyong Diao ◽  
Shi Wang ◽  
Xiangbin Cai ◽  
Yuan Cai ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Temperature ◽  
Temperature Stability ◽  
In Situ Tem ◽  
High Temperature Stability
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