Porous CuCo2O4 nanocubes wrapped by reduced graphene oxide as high-performance lithium-ion battery anodes

Nanoscale ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 6551-6556 ◽  
Author(s):  
Wenpei Kang ◽  
Yongbing Tang ◽  
Wenyue Li ◽  
Zhangpeng Li ◽  
Xia Yang ◽  
...  

Porous CuCo2O4 nanocubes well wrapped by reduced graphene oxide sheets were facilely prepared and they showed impressive performance at high current density as the anode material of a lithium ion battery.

2018 ◽  
Vol 3 (43) ◽  
pp. 12108-12112 ◽  
Author(s):  
Xiaoqing Liu ◽  
Dan Zhang ◽  
Guangshe Li ◽  
Chenglin Xue ◽  
Junfang Ding ◽  
...  

Nano Energy ◽  
2016 ◽  
Vol 19 ◽  
pp. 187-197 ◽  
Author(s):  
Kun Feng ◽  
Wook Ahn ◽  
Gregory Lui ◽  
Hey Woong Park ◽  
Ali Ghorbani Kashkooli ◽  
...  

2018 ◽  
Vol 10 (3) ◽  
pp. 358-364 ◽  
Author(s):  
Chao Pan ◽  
Hongyu Sun ◽  
Jingyi Gao ◽  
Yucai Hu ◽  
Jing Wang

We introduced a simple method to construct novel three-dimensional (3D) flexible hierarchical nanocomposites by combining (1D) NiCo2O4 nanowires with 2D reduced graphene oxide (rGO) sheets. The hierarchical nanocomposite structure of rGO-wrapped NiCo2O4 (rGO-NiCo2O4) was confirmed by X-ray diffraction (XRD), Raman spectra, scanning electron microscopy (SEM), transmission electron microscope (TEM), and X-ray photoelectron spectroscopy (XPS). The results indicated that NiCo2O4 nanowires were successfully wrapped in rGO and the morphology of the rGO-NiCo2O4 showed a three-dimensional porous structure with NiCo2O4 being homogeneously distributed in the rGO. Given their apparent advantages, these two different nanostructures were evaluated as electrodes for high-performance supercapacitors. These electrodes exhibited a high capacitance of 1824.8 F·g–1 at a current density of 0.5 A·g–1, and an excellent cycling performance extending to 5000 cycles at a high current density of 4 A·g–1. Our results clearly demonstrate that rGO sheets on NiCo2O4 nanowires can substantially improve the capacitive performance of materials and ultimately increase the cycling stability of supercapacitors. The hierarchical binary nanocomposites show excellent electrochemical properties for energy storage applications, evidencing their potential application as supercapacitors.


Nanoscale ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 3353 ◽  
Author(s):  
Jian-Guo Ren ◽  
Chundong Wang ◽  
Qi-Hui Wu ◽  
Xiang Liu ◽  
Yang Yang ◽  
...  

2021 ◽  
Author(s):  
Yangqiang Jiang ◽  
Feng Xiang ◽  
Shijun Fan ◽  
Zixu Sun

A high-coulombic-efficiency Si-based anode material with Si-Cu-C dispersed in a reduced graphene oxide (RGO) and carbon nanotube (CNT) framework (namely SCC/RGO/CNT) is designed and synthesized. The composite could show a...


2015 ◽  
Vol 41 (10) ◽  
pp. 15145-15152 ◽  
Author(s):  
Yankun Wang ◽  
Jie Ding ◽  
Yanhui Liu ◽  
Yushan Liu ◽  
Qiang Cai ◽  
...  

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