scholarly journals Collaborative Improvement Electrochemical Properties of Supercapacitor Electrodes by Loading MoS2 Nanosheets on Biomass Hierarchical Porous Carbon

Author(s):  
Qiao Jing Lin ◽  
Jing Mei Wang ◽  
Jian Hua Chen ◽  
Qian Yang ◽  
Li Jun Fang ◽  
...  

Abstract MoS2, a typical two-dimensional transition metal sulfide nanomaterial, has attracted much attention for supercapacitor electrode materials due to its high theoretical capacity. Herein, MoS2 nanosheets growing on a hierarchical porous carbon (HPGC) derived from pomelo peel are prepared via hydrothermal method. The curled MoS2 nanosheets uniformly grow and distribute on the conductive hierarchical porous carbon matrix, which made the electrodes materials possess a high specific surface area (320.2 m2/g). Simultaneously, the novel structure enhances the conductivity of MoS2, alleviates capacity attenuation and guarantees the interface stability. Furthermore, the MoS2/HPGC show a great enhancement in supercapacitor performance and deliver a remarkable specific capacitance of 411.4 F/g at the current density of 0.5 A/g. The initial capacitance retention rate is approximately 94.3% after 2000 cycles. It turns out that the synergistic effects between the MoS2 nanosheets and HPGC contribute to high specific capacity, excellent rate performance and ultra-long cycle life. This work provides a new idea for the design and development of MoS2 composites as the electrode materials of supercapacitors.

RSC Advances ◽  
2017 ◽  
Vol 7 (72) ◽  
pp. 45363-45368 ◽  
Author(s):  
Mingxi Guo ◽  
Jixi Guo ◽  
Fenglian Tong ◽  
Dianzeng Jia ◽  
Wei Jia ◽  
...  

Hierarchical porous carbon spheres (PCS) were prepared by a simple one-pot spray pyrolysis of coal oxide solution for use as supercapacitor electrode materials.


2020 ◽  
Vol 31 (15) ◽  
pp. 12148-12157 ◽  
Author(s):  
Luiz K. C. de Souza ◽  
João Carlos Martins ◽  
Diogo Padilha Oliveira ◽  
Carlos Sergio Ferreira ◽  
Alexandre A. S. Gonçalves ◽  
...  

2016 ◽  
Vol 4 (19) ◽  
pp. 7445-7452 ◽  
Author(s):  
Feng Gao ◽  
Jiangying Qu ◽  
Chuang Geng ◽  
Guanghua Shao ◽  
Mingbo Wu

Nitrogen-doped hierarchical porous carbon for a supercapacitor electrode was prepared from shrimp shell using its intrinsic mineral scaffold (CaCO3) as the self-template combined with KOH activation.


2020 ◽  
Vol 4 (11) ◽  
pp. 5697-5708 ◽  
Author(s):  
Mohammad Shaad Ansari ◽  
Thomas Nesakumar Jebakumar Immanuel Edison ◽  
Yong Rok Lee

A N/S co-doped hierarchical porous carbon-based electrode shows superior cycling stability and reversibility without a significant reduction in specific capacity.


RSC Advances ◽  
2015 ◽  
Vol 5 (130) ◽  
pp. 107785-107792 ◽  
Author(s):  
Di Ma ◽  
Guang Wu ◽  
Jiafeng Wan ◽  
Fangwei Ma ◽  
Weidan Geng ◽  
...  

Sunflower heads, a biowaste from sunflower crop, was first explored as a sustainable precursor to synthesize porous carbon (PC) as a supercapacitor electrode material.


Nanoscale ◽  
2021 ◽  
Author(s):  
Lichong Peng ◽  
Xiuling Zhang ◽  
Yaxin Sun ◽  
Congju Li

We have developed a feasible approach to establish a freestanding air-cathode based on Co–Nx species trapped in hierarchical porous carbon nanofibers with reduced charge-discharge polarization (0.36 V) and high initial specific capacity (12.12 mAh cm−2) for Li–O2 batteries.


2016 ◽  
Vol 4 (12) ◽  
pp. 4497-4505 ◽  
Author(s):  
Xiao-Xiao Lin ◽  
Bin Tan ◽  
Lu Peng ◽  
Zhao-Feng Wu ◽  
Zai-Lai Xie

In the present work, a series of hierarchical porous carbon monoliths were prepared from fructoseviaa one-step ionothermal carbonization approach using an iron-based ionic liquid as solvent, and a porogenic agent.


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