A new approach to preparing porous carbons with controllable pore structure and morphology

2014 ◽  
Vol 50 (94) ◽  
pp. 14824-14827 ◽  
Author(s):  
Yi Gu ◽  
Zhigang Xiong ◽  
Wael Al Abdulla ◽  
Guohua Chen ◽  
X. S. Zhao
Keyword(s):  
Pore Structure ◽  
Porous Carbons ◽  
New Approach ◽  
Structure And Morphology

Porous Carbon Prepared by a Template-Like Method Using Non-Porous Pumice Mineral as Template

2010 ◽  
Vol 160-162 ◽  
pp. 1028-1031
Author(s):  
Gui Yang Liu ◽  
Yan Nan Li ◽  
Jun Ming Guo ◽  
Bao Sen Wang
Keyword(s):  
Pore Structure ◽  
Porous Carbon ◽  
Carbon Sources ◽  
Nitrogen Adsorption ◽  
Porous Carbons ◽  
Structure And Morphology ◽  
Surface Areas ◽  
Study Results

Porous carbons have been prepared by a template-like method using non-porous pumice mineral as a “template”, and sucrose and furfuralcohol as carbon sources. Nitrogen adsorption and scanning electric microscope (SEM) have been used to investigate the pore structure and morphology of the samples. The study results indicate that the surface areas of the carbons prepared from sucrose and furfuralcohol are 208 and 268 m2/g, respectively. The carbon prepared from sucrose is microporous, and the carbon prepared from furfuralcohol is a carbon with both micropores and mesopores.

Highly Porous Carbon Derived from Sunflower Seed Shell for Electrochemical Capacitor

2011 ◽  
Vol 287-290 ◽  
pp. 1420-1423 ◽  
Author(s):  
Wei Xing ◽  
Xiao Li ◽  
Xiu Li Gao ◽  
Shu Ping Zhuo
Keyword(s):  
Pore Structure ◽  
Electrode Material ◽  
Sunflower Seed ◽  
High Performance ◽  
Chemical Activation ◽  
Electrochemical Capacitor ◽  
Drain Current ◽  
Porous Carbons ◽  
Activation Temperature ◽  
Highly Porous

Highly porous carbons were prepared from sunflower seed shell (SSS) by chemical activation and used as electrode material for electrochemical double layer capacitor (EDLC). The surface area and pore structure of the porous carbons are characterized intensively using N2 adsorption technique. The results show that the pore-structure of the carbons is closely related to activation temperature. Electrochemical measurements show that the carbons have excellent capacitive behavior and high capacitance retention ratio at high drain current, which is due to that there are both abundant macroscopic pores and micropore surface in the texture of the carbons. More importantly, the capacitive performances of these carbons are much better than ordered mesoporous carbons, thus highlighting the success of preparing high performance electrode material for EDLC from SSS.

Effects of Cellulose, Hemicellulose, and Lignin on the Structure and Morphology of Porous Carbons

2016 ◽  
Vol 4 (7) ◽  
pp. 3750-3756 ◽  
Author(s):  
Jiang Deng ◽  
Tianyi Xiong ◽  
Haiyan Wang ◽  
Anmin Zheng ◽  
Yong Wang
Keyword(s):  
Porous Carbons ◽  
Structure And Morphology

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.

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