Increase of porosity by combining semi-carbonization and KOH activation of formaldehyde resins to prepare high surface area carbons for supercapacitor applications

2018 ◽  
Vol 427 ◽  
pp. 1055-1064 ◽  
Author(s):  
Ruben Heimböckel ◽  
Sebastian Kraas ◽  
Frank Hoffmann ◽  
Michael Fröba
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Koh Activation ◽  
Supercapacitor Applications

scholarly journals Structural Flexibility in Activated Carbon Materials Prepared under Harsh Activation Conditions

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1988 ◽  
Author(s):  
Fabiano Gomes Ferreira de Paula ◽  
Ignacio Campello-Gómez ◽  
Paulo Fernando Ribeiro Ortega ◽  
Francisco Rodríguez-Reinoso ◽  
Manuel Martínez-Escandell ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Structural Changes ◽  
Organic Molecules ◽  
Carbon Materials ◽  
High Surface ◽  
High Surface Area ◽  
Koh Activation ◽  
3D Network ◽  
Activation Conditions

Although traditionally high-surface area carbon materials have been considered as rigid structures with a disordered three dimensional (3D) network of graphite microdomains associated with a limited electrical conductivity (highly depending on the porous structure and surface chemistry), here we show for the first time that this is not the case for activated carbon materials prepared using harsh activation conditions (e.g., KOH activation). In these specific samples a clear structural re-orientation can be observed upon adsorption of different organic molecules, the structural changes giving rise to important changes in the electrical resistivity of the material. Whereas short chain hydrocarbons and their derivatives give rise to an increased resistivity, the contrary occurs for longer-chain hydrocarbons and/or alcohols. The high sensitivity of these high-surface area carbon materials towards these organic molecules opens the gate towards their application for sensing devices.

scholarly journals Preparation and CO2Sorption of a High Surface Area Activated Carbon Obtained from the KOH Activation of Finger Citron Residue

2012 ◽  
Vol 30 (2) ◽  
pp. 183-191 ◽  
Author(s):  
Wei Dai ◽  
Yuchen Liu ◽  
Wei Su ◽  
Gengshen Hu ◽  
Gang Deng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Koh Activation

Preparation of high surface area activated carbons by KOH activation promoted by alkali metal halides

Carbon ◽  
2008 ◽  
Vol 46 (11) ◽  
pp. 2
Author(s):  
Xin-Mei Liu ◽  
Xiao-Dong Dai ◽  
Jian Zhang ◽  
Hui Song ◽  
Zi-Feng Yan
Keyword(s):  
Alkali Metal ◽  
Surface Area ◽  
Activated Carbons ◽  
High Surface ◽  
High Surface Area ◽  
Koh Activation ◽  
Metal Halides ◽  
Alkali Metal Halides

Template-derived high surface area λ-MnO2 for supercapacitor applications

2013 ◽  
Vol 44 (1) ◽  
pp. 123-132 ◽  
Author(s):  
Camelia Matei Ghimbeu ◽  
Agnieszka Malak-Polaczyk ◽  
Elzbieta Frackowiak ◽  
Cathie Vix-Guterl
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Supercapacitor Applications

Shape tailored Ni3(NO3)2(OH)4 nano-flakes simulating 3-D bouquet-like structures for supercapacitors: exploring the effect of electrolytes on stability and performance

RSC Advances ◽  
2014 ◽  
Vol 4 (74) ◽  
pp. 39378-39385 ◽  
Author(s):  
Jickson Joseph ◽  
Ranjusha Rajagopalan ◽  
S. S. Anoop ◽  
V. Amruthalakshmi ◽  
Amrutha Ajay ◽  
...  
Keyword(s):  
Surface Area ◽  
Nickel Hydroxide ◽  
High Surface ◽  
High Surface Area ◽  
And Performance ◽  
Supercapacitor Applications

3-D bouquets of nickel hydroxide nitrate were processed into high surface area electrodes for supercapacitor applications.

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