Nitrogen and phosphorus co-doped cubic ordered mesoporous carbon as a supercapacitor electrode material with extraordinary cyclic stability

2015 ◽  
Vol 3 (35) ◽  
pp. 18001-18009 ◽  
Author(s):  
Tandra Panja ◽  
Dhrubajyoti Bhattacharjya ◽  
Jong-Sung Yu

Cubic ordered mesoporous carbon co-doped with N and P shows a high specific capacitance of 210 F g−1 at 1.0 A g−1 and excellent retention of specific capacitance with more than 90% of initial capacitance at a high current density of 10 A g−1 and also for 3000 charge–discharge cycles.

2015 ◽  
Vol 08 (04) ◽  
pp. 1550031 ◽  
Author(s):  
Baolin Xing ◽  
Jianliang Cao ◽  
Yan Wang ◽  
Guiyun Yi ◽  
Chuanxiang Zhang ◽  
...  

A lignite-based activated carbon (LAC) for electrochemical capacitors (ECs) was prepared from high moisture lignite by KOH activation, and the as-prepared sample was characterized by the N 2-sorption, scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS) techniques. The electrochemical performances of ECs with activated carbon as electrodes in 3 M KOH aqueous solution were evaluated by constant current charge-discharge and cyclic voltammetry. The LAC exhibits a well-developed surface area of 2581 m2/g, a relative wide pore size distribution of 0.5–10 nm. The ECs with LAC as electrode materials presents a high specific capacitance of 392 F/g at a low current density of 50 mA/g, and still remains 315 F/g even at a high current density of 5 A/g. The residual specific capacitance is as high as 92.9% after 2000 cycles. Compared with the commercial activated carbon (Maxsorb: Commercial product, Kansai, Japan), the LAC based electrode materials shows superior capacitive performance in terms of specific capacitance and charge–discharge performance at the high current density.


2018 ◽  
Vol 165 (7) ◽  
pp. H348-H352 ◽  
Author(s):  
Le Wang ◽  
Hangjia Shen ◽  
Sanshuang Gao ◽  
Xamxikamar Mamat ◽  
Guangzhi Hu

2013 ◽  
Vol 22 (4) ◽  
pp. 044101 ◽  
Author(s):  
Shao-Li Guo ◽  
Liu-Ding Wang ◽  
Yi-Ming Wang ◽  
Hong-Jing Wu ◽  
Zhong-Yuan Shen

Sign in / Sign up

Export Citation Format

Share Document