A Low-Cost and High-Purity Porous Carbon Spheres Based on Starch Gel Toward High-Performance Supercapacitors

NANO ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. 2050147
Author(s):  
Wen-Tong Yang ◽  
Hao-Yang Xie ◽  
Min-Peng Li ◽  
Rong-Rong Han ◽  
Chun Lu ◽  
...  

The development of low-cost, high-purity and high-performance porous carbon is of great significance for promoting the commercial application of supercapacitors. In this paper, porous carbon spheres (PCSs) with excellent electrochemical performance were obtained by carbonization and activation of starch gel spheres as precursor which is prepared by microemulsion process. The obtained PCSs exhibit both microporous and mesoporous structure, showing a large specific surface area of 1117.0 m2 g[Formula: see text] and exhibiting a high specific capacitance of 221.3 F g[Formula: see text]at a current density of 0.5 A g[Formula: see text] in aqueous electrolyte (and still displays capacity of 146.0 F g[Formula: see text] in ion liquid electrolyte). The PCSs//PCSs symmetric supercapacitor (SSC) based on aqueous electrolyte exhibits an energy density of 10.9 Wh kg[Formula: see text] at a power density of 300.0 W kg[Formula: see text], whereas that based on ion liquid electrolyte achieves a high energy density of 29.0 Wh kg[Formula: see text] at 650.0 W kg[Formula: see text]. The study provides a new idea to develop low-cost, high-purity and high-performance porous carbon materials for supercapacitors.

2019 ◽  
Vol 7 (7) ◽  
pp. 7024-7034 ◽  
Author(s):  
Danfeng Xue ◽  
Dazhang Zhu ◽  
Wei Xiong ◽  
Tongcheng Cao ◽  
Zhiwei Wang ◽  
...  

Nano Energy ◽  
2019 ◽  
Vol 60 ◽  
pp. 536-544 ◽  
Author(s):  
Si Chen ◽  
Lanling Zhao ◽  
Jizhen Ma ◽  
Yueqing Wang ◽  
Liming Dai ◽  
...  

2018 ◽  
Vol 5 (2) ◽  
pp. 354-363 ◽  
Author(s):  
Pitchaimani Veerakumar ◽  
I. Panneer Muthuselvam ◽  
Pounraj Thanasekaran ◽  
King-Chuen Lin

A novel method for the synthesis of recyclable Pd@PCS catalyst was applied for the reduction of CV, EY, and SY.


2018 ◽  
Vol 34 (11) ◽  
pp. 2189-2196 ◽  
Author(s):  
Yuemei Chen ◽  
Guoxiong Zhang ◽  
Jingyuan Zhang ◽  
Haibo Guo ◽  
Xin Feng ◽  
...  

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.


RSC Advances ◽  
2020 ◽  
Vol 10 (19) ◽  
pp. 11033-11038 ◽  
Author(s):  
Yan Lv ◽  
Jingjing Chen ◽  
Wei Jia ◽  
Xueyan Wu ◽  
Jixi Guo ◽  
...  

N/S co-doped porous carbon spheres were prepared using one step strategy for high performance supercapacitors.


Nanoscale ◽  
2019 ◽  
Vol 11 (44) ◽  
pp. 21302-21310 ◽  
Author(s):  
Xiaojing Zhu ◽  
Jiale Dai ◽  
Ligui Li ◽  
Zexing Wu ◽  
Shaowei Chen

N,S-Codoped hierarchical porous carbon spheres embedded with cobalt nanoparticles as efficient bifunctional oxygen reversible electrocatalysts for high-performance rechargeable Zinc–air batteries.


Sign in / Sign up

Export Citation Format

Share Document