Electrochemical performance of polypyrrole derived porous activated carbon-based symmetric supercapacitors in various electrolytes

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 68141-68149 ◽  
Author(s):  
A. Bello ◽  
F. Barzegar ◽  
M. J. Madito ◽  
D. Y. Momodu ◽  
A. A. Khaleed ◽  
...  

The electrochemical performance of porous carbon prepared from the polymerization and carbonization of pyrrole is presented in this work.

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34803-34811 ◽  
Author(s):  
Zijian Zhao ◽  
Yong Wang ◽  
Min Li ◽  
Ru Yang

The chicken feather-derived N-doped porous carbons exhibit excellent electrochemical performance and high CO2 uptake.


RSC Advances ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 6452-6459 ◽  
Author(s):  
Guangzhi Xin ◽  
Min Wang ◽  
Lin Chen ◽  
Yuzhou Zhang ◽  
Meicheng Wang ◽  
...  

A novel adsorbent zeolite/N-doped porous activated carbon (ZAC) was prepared by the synthesis of zeolite and mesoporous carbon to remove ammonia nitrogen (NH4+–N) and chemical oxygen demand (COD) from aqueous solution.


2015 ◽  
Vol 33 (2) ◽  
pp. 576-581 ◽  
Author(s):  
Fu-Qiang An ◽  
Dong Zhang ◽  
Xiao-Xia Yue ◽  
Guo-Li Ou ◽  
Jian-Feng Gao ◽  
...  

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1056
Author(s):  
Ndeye F. Sylla ◽  
Samba Sarr ◽  
Ndeye M. Ndiaye ◽  
Bridget K. Mutuma ◽  
Astou Seck ◽  
...  

Biomass-waste activated carbon/molybdenum oxide/molybdenum carbide ternary composites are prepared using a facile in-situ pyrolysis process in argon ambient with varying mass ratios of ammonium molybdate tetrahydrate to porous peanut shell activated carbon (PAC). The formation of MoO2 and Mo2C nanostructures embedded in the porous carbon framework is confirmed by extensive structural characterization and elemental mapping analysis. The best composite when used as electrodes in a symmetric supercapacitor (PAC/MoO2/Mo2C-1//PAC/MoO2/Mo2C-1) exhibited a good cell capacitance of 115 F g−1 with an associated high specific energy of 51.8 W h kg−1, as well as a specific power of 0.9 kW kg−1 at a cell voltage of 1.8 V at 1 A g−1. Increasing the specific current to 20 A g−1 still showcased a device capable of delivering up to 30 W h kg−1 specific energy and 18 kW kg−1 of specific power. Additionally, with a great cycling stability, a 99.8% coulombic efficiency and capacitance retention of ~83% were recorded for over 25,000 galvanostatic charge-discharge cycles at 10 A g−1. The voltage holding test after a 160 h floating time resulted in increase of the specific capacitance from 74.7 to 90 F g−1 at 10 A g−1 for this storage device. The remarkable electrochemical performance is based on the synergistic effect of metal oxide/metal carbide (MoO2/Mo2C) with the interconnected porous carbon. The PAC/MoO2/Mo2C ternary composites highlight promising Mo-based electrode materials suitable for high-performance energy storage. Explicitly, this work also demonstrates a simple and sustainable approach to enhance the electrochemical performance of porous carbon materials.


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