Graphene-coupled nitrogen-enriched porous carbon nanosheets for energy storage

2017 ◽  
Vol 5 (32) ◽  
pp. 16732-16739 ◽  
Author(s):  
Jinhui Zhu ◽  
Xiaodong Zhuang ◽  
Jun Yang ◽  
Xinliang Feng ◽  
Shin-ichi Hirano

Nitrogen-enriched porous carbon nanosheets (G-PCs) are prepared through the pyrolysis of graphene-coupled covalent triazine-based frameworks (G-CTFs), which exhibit excellent energy storage performance.

2020 ◽  
Author(s):  
Yamin Zhang ◽  
Zhongpu Wang ◽  
Deping Li ◽  
Qing Sun ◽  
Kangrong Lai ◽  
...  

<p></p><p>Porous carbon has attracted extensive attentions as the electrode material for various energy storage devices considering its advantages like high theoretical capacitance/capacity, high conductivity, low cost and earth abundant inherence. However, there still exists some disadvantages limiting its further applications, such as the tedious fabrication process, limited metal-ion transport kinetics and undesired structure deformation at harsh electrochemical conditions. Herein, we report a facile strategy, with calcium gluconate firstly reported as the carbon source, to fabricate ultrathin porous carbon nanosheets. <a>The as-prepared Ca-900 electrode delivers excellent K-ion storage performance including high reversible capacity (430.7 mAh g<sup>-1</sup>), superior rate capability (154.8 mAh g<sup>-1</sup> at an ultrahigh current density of 5.0 A g<sup>-1</sup>) and ultra-stable long-term cycling stability (a high capacity retention ratio of ~81.2% after 4000 cycles at 1.0 A g<sup>-1</sup>). </a>Similarly, when being applied in Zn-ion capacitors, the Ca-900 electrode also exhibits an ultra-stable cycling performance with ~90.9% capacity retention after 4000 cycles at 1.0 A g<sup>-1</sup>, illuminating the applicable potentials. Moreover, the origin of the fast and smooth metal-ion storage is also revealed by carefully designed consecutive CV measurements. Overall, considering the facile preparation strategy, unique structure, application flexibility and in-depth mechanism investigations, this work will deepen the fundamental understandings and boost the commercialization of high-efficient energy storage devices like potassium-ion/sodium-ion batteries, zinc-ion batteries/capacitors and aluminum-ion batteries.</p><br><p></p>


2017 ◽  
Vol 5 (5) ◽  
pp. 2204-2214 ◽  
Author(s):  
Enchao Hao ◽  
Wei Liu ◽  
Shuang Liu ◽  
Yuan Zhang ◽  
Huanlei Wang ◽  
...  

Based on the unique multilayered structure of ginkgo leaves, interconnected carbon nanosheets with rich micro/meso pores have been fabricated, showing excellent electrochemical performance in multiple energy storage devices.


2020 ◽  
Vol 4 (7) ◽  
pp. 3552-3565 ◽  
Author(s):  
Limin Zhang ◽  
Wenqing Zhao ◽  
Feng Jiang ◽  
Mengjie Tian ◽  
Yue Yang ◽  
...  

The reversible capacity and surface-controlled contributions in porous carbon nanosheet materials were explored.


RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32496-32501 ◽  
Author(s):  
Yongjie Xu ◽  
Shaoping Wu ◽  
Shijie Ren ◽  
Junyi Ji ◽  
Yong Yue ◽  
...  

Nitrogen-doped porous carbon material NPCM-1 exhibits much higher supercapacitive energy storage performance than its non-doped analogue PCM-1.


Nanoscale ◽  
2021 ◽  
Author(s):  
Lei Zhang ◽  
Xiao Li ◽  
Linlin Tai ◽  
Chunping Shen ◽  
Jun Yang ◽  
...  

Because of their large theoretical capacity and relatively high electronic conductivity, transition metal selenides have been investigated as potential anodes for energy storage applications. On the other hand, the quick...


Carbon ◽  
2018 ◽  
Vol 128 ◽  
pp. 287-295 ◽  
Author(s):  
Ashvini B. Deshmukh ◽  
Archana C. Nalawade ◽  
Indrapal Karbhal ◽  
Mohammed Shadbar Qureshi ◽  
Manjusha V. Shelke

2017 ◽  
Vol 47 (1) ◽  
pp. 337-346 ◽  
Author(s):  
Kezheng Gao ◽  
Qingyuan Niu ◽  
Qiheng Tang ◽  
Yaqing Guo ◽  
Lizhen Wang

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