Preparation of ZnCo2O4 nanoflowers on a 3D carbon nanotube/nitrogen-doped graphene film and its electrochemical capacitance

2015 ◽  
Vol 3 (43) ◽  
pp. 21891-21898 ◽  
Author(s):  
Wenlong Bai ◽  
Hao Tong ◽  
Zhenzhen Gao ◽  
Shihong Yue ◽  
Sichuan Xing ◽  
...  

Homogeneous ZnCo2O4 nanoflowers have been synthesized on a 3D layered structure of carbon nanotubes/nitrogen-doped graphene (NGN/CNTs) film by a hydrothermal process and subsequent calcination method.

2017 ◽  
Vol 5 (34) ◽  
pp. 17896-17908 ◽  
Author(s):  
Jayaraman Balamurugan ◽  
Shaik Gouse Peera ◽  
Meng Guo ◽  
Thanh Tuan Nguyen ◽  
Nam Hoon Kim ◽  
...  

A novel hybrid of 2D Ni–Mo–S nanosheet integrated nitrogen doped graphene (NG) is successfully developed via a simple, scalable, and cost-effective hydrothermal process, and its application towards energy conversion devices is explored.


Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 666 ◽  
Author(s):  
Florent Bourquard ◽  
Yannick Bleu ◽  
Anne-Sophie Loir ◽  
Borja Caja-Munoz ◽  
José Avila ◽  
...  

Graphene-based materials are widely studied to enable significant improvements in electroanalytical devices requiring new generations of robust, sensitive and low-cost electrodes. In this paper, we present a direct one-step route to synthetize a functional nitrogen-doped graphene film onto a Ni-covered silicon electrode substrate heated at high temperature, by pulsed laser deposition of carbon in the presence of a surrounding nitrogen atmosphere, with no post-deposition transfer of the film. With the ferrocene methanol system, the functionalized electrode exhibits excellent reversibility, close to the theoretical value of 59 mV, and very high sensitivity to hydrogen peroxide oxidation. Our electroanalytical results were correlated with the composition and nanoarchitecture of the N-doped graphene film containing 1.75 at % of nitrogen and identified as a few-layer defected and textured graphene film containing a balanced mixture of graphitic-N and pyrrolic-N chemical functions. The absence of nitrogen dopant in the graphene film considerably degraded some electroanalytical performances. Heat treatment extended beyond the high temperature graphene synthesis did not significantly improve any of the performances. This work contributes to a better understanding of the electrochemical mechanisms of doped graphene-based electrodes obtained by a direct and controlled synthesis process.


2016 ◽  
Vol 4 (31) ◽  
pp. 12065-12072 ◽  
Author(s):  
Yingke Zhou ◽  
Jiming Lu ◽  
Chengji Deng ◽  
Hongxi Zhu ◽  
George Z. Chen ◽  
...  

Three-dimensional porous composite microspheres of LiFePO4 and nitrogen-doped graphene have been synthesized by a solvothermal process coupled with subsequent calcination.


ACS Nano ◽  
2012 ◽  
Vol 6 (10) ◽  
pp. 8837-8846 ◽  
Author(s):  
Toma Susi ◽  
Jani Kotakoski ◽  
Raul Arenal ◽  
Simon Kurasch ◽  
Hua Jiang ◽  
...  

ACS Nano ◽  
2013 ◽  
Vol 7 (8) ◽  
pp. 7436-7436 ◽  
Author(s):  
Toma Susi ◽  
Jani Kotakoski ◽  
Raul Arenal ◽  
Simon Kurasch ◽  
Hua Jiang ◽  
...  

2019 ◽  
Vol 63 (10) ◽  
pp. 1889-1897
Author(s):  
Xingyuan Chu ◽  
Tieqi Huang ◽  
Yueqi Hu ◽  
Ruilin Dong ◽  
Jingyang Luo ◽  
...  

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