Removal of gaseous H2S using microalgae porous carbons synthesized by thermal/microwave KOH activation

2021 ◽  
Author(s):  
Zhifei Dou ◽  
Hui Chen ◽  
Yangxian Liu ◽  
Renkun Huang ◽  
Jianfeng Pan
Keyword(s):  
Koh Activation ◽  
Porous Carbons

Fabrication of nitrogen-doped hierarchical porous carbons from Sargassum as advanced electrode materials for supercapacitors

2021 ◽  
Author(s):  
Feiqiang Guo ◽  
Yinbo Zhan ◽  
Xiaopeng Jia ◽  
Huiming Zhou ◽  
Shuang Liang ◽  
...  
Keyword(s):  
High Performance ◽  
Nitrogen Doping ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Koh Activation ◽  
Porous Carbons ◽  
Nitrogen Doped ◽  
Novel Approach ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons

Using Sargassum as the precursor, a novel approach was developed to synthesize three-dimensional porous carbons as high-performance electrode materials for supercapacitors via KOH activation and subsequent nitrogen-doping employing melamine as...

scholarly journals Nitrogen-Doped Hierarchically Porous Carbons Derived from Polybenzoxazine for Enhanced Supercapacitor Performance

Nanomaterials ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 131 ◽  
Author(s):  
Yanhui Wang ◽  
Liyan Dong ◽  
Guiping Lai ◽  
Meng Wei ◽  
Xingbi Jiang ◽  
...  
Keyword(s):  
Pore Structure ◽  
Rate Capability ◽  
Total Pore Volume ◽  
High Specific Capacitance ◽  
High Specific Surface Area ◽  
Koh Activation ◽  
Porous Carbons ◽  
Activation Temperature ◽  
Hierarchically Porous ◽  
Nitrogen Doped

Nitrogen-doped hierarchically porous carbons (HPCs), which are synthesized from benzoxazine resins, were successfully prepared following the processes of polymerization, carbonization, and potassium hydroxide (KOH) activation. As the key factor, the KOH activation temperature influences the pore structure and surface functionality, which are crucial for the excellent performance. The HPC-800 material, with the highest activation temperature (800 °C), displays a hierarchical pore structure, a high specific surface area (1812.4 m2·g−1), large total pore volume (0.98 cm3·g−1), high nitrogen content (1.27%), and remarkable electrical conductivity. It has also presented an excellent electrochemical performance of high specific capacitance of 402.4 F·g−1 at 0.1 A·g−1, excellent rate capability of 248.6 F·g−1 at 10 A·g−1, and long-term cycling stability with >99.0% capacitance retention after 500 cycles at 1 A·g−1 in 6 M KOH aqueous solution.

Erratum to “Electrochemical capacitors based on highly porous carbons prepared by KOH activation”

2004 ◽  
Vol 49 (7) ◽  
pp. 1169-1170 ◽  
Author(s):  
K. Kierzek ◽  
E. Frackowiak ◽  
G. Lota ◽  
G. Gryglewicz ◽  
J. Machnikowski
Keyword(s):  
Electrochemical Capacitors ◽  
Koh Activation ◽  
Porous Carbons ◽  
Highly Porous

scholarly journals Facile fabrication of hierarchical porous carbon based on extract separated from coal with outstanding electrochemical performance

RSC Advances ◽  
2017 ◽  
Vol 7 (54) ◽  
pp. 33843-33850 ◽  
Author(s):  
Peng Chang ◽  
Zhihong Qin
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
Low Cost ◽  
Koh Activation ◽  
Porous Carbons ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons ◽  
Facile Fabrication

Herein, a novel kind of hierarchical porous carbons were directly synthesized from low-cost extracts of coal by coupling nano MgO template with in situ KOH activation strategy.

Removal of CO2 from Flue Gas Using Seaweed Porous Carbons Prepared by Urea Doping and KOH Activation

2020 ◽  
Vol 34 (12) ◽  
pp. 16411-16422
Author(s):  
Shuo Shi ◽  
Friday O. Ochedi ◽  
Shuaibo Cui ◽  
Yangxian Liu
Keyword(s):  
Flue Gas ◽  
Koh Activation ◽  
Porous Carbons
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