scholarly journals Konjac Sponge Derived Carbon Flakes with Optimized Pore Structure for High-Performance Supercapacitor

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Bing Han ◽  
Chongchong Geng ◽  
Gong Cheng
Keyword(s):  
Pore Structure ◽  
High Performance ◽  
Activated Carbons ◽  
Koh Activation ◽  
Acid Electrolyte ◽  
Activation Temperature ◽  
Hierarchical Pore Structure ◽  
Lateral Distance ◽  
N Doping ◽  
Hierarchical Pore

Lamellar activated carbons derived from Konjac sponges (KACs) have been successfully fabricated through a facile KOH activation method. By manipulating the activation temperature and KOH/C ratio, the achieved KACs exhibit ultrahigh specific surface area up to ∼3000 m2/g and hierarchical pore structure with tunable micro/mesopore distribution. Notably, KACs possess plenty of worm-shaped micropores formed by graphene stacking layers with the lateral distance close to size of hydrated electrolyte ions. Owing to optimized pore structure, high graphitization, and extra O/N doping, KACs exhibited much enhanced specific capacitance (253.0 F/g), superior rate ability (77% retention of capacitance at 10 A/g), and remarkable cycling stability (0.4% decay under 5 A/g after 2000 cycles) in the acid electrolyte. The mass production ability of KAC materials and the knowledge of correlation between texture properties and capacitive performance open new opportunities for the application of such novel biomass-derived carbons in supercapacitor devices.

Dual-doping activated carbon with hierarchical pore structure derived from polymeric porous monolith for high performance EDLC

2021 ◽  
Vol 375 ◽  
pp. 137927
Author(s):  
Guangxu Fu ◽  
Huimin Li ◽  
Qiuhong Bai ◽  
Cong Li ◽  
Yehua Shen ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Pore Structure ◽  
High Performance ◽  
Hierarchical Pore Structure ◽  
Porous Monolith ◽  
Hierarchical Pore

scholarly journals Preparation of Lotus Root-Type Monolithic-Activated Carbons with an Hierarchical Pore Structure from Rice Husks and Their Adsorption of Vitamin B12

ACS Omega ◽  
2019 ◽  
Vol 4 (20) ◽  
pp. 18930-18935 ◽  
Author(s):  
Yuyao Li ◽  
Makhmut Biisembaev ◽  
Qianming Gong ◽  
Sestager Aknazarov ◽  
Fangping Lu ◽  
...  
Keyword(s):  
Vitamin B12 ◽  
Pore Structure ◽  
Activated Carbons ◽  
Rice Husks ◽  
Hierarchical Pore Structure ◽  
Lotus Root ◽  
Hierarchical Pore

Immobilization of invertase on silica monoliths with hierarchical pore structure to obtain continuous flow enzymatic microreactors of high performance

2013 ◽  
Vol 170 ◽  
pp. 75-82 ◽  
Author(s):  
Katarzyna Szymańska ◽  
Wojciech Pudło ◽  
Julita Mrowiec-Białoń ◽  
Agata Czardybon ◽  
Jacek Kocurek ◽  
...  
Keyword(s):  
Pore Structure ◽  
Continuous Flow ◽  
High Performance ◽  
Silica Monoliths ◽  
Hierarchical Pore Structure ◽  
Enzymatic Microreactors ◽  
Hierarchical Pore

The preparation of porous carbon spheres with hierarchical pore structure and the application for high-performance supercapacitors

2018 ◽  
Vol 53 (19) ◽  
pp. 13987-14000 ◽  
Author(s):  
Zhihong Tang ◽  
Song Jiang ◽  
Shuling Shen ◽  
Junhe Yang
Keyword(s):  
Pore Structure ◽  
Porous Carbon ◽  
High Performance ◽  
Carbon Spheres ◽  
Hierarchical Pore Structure ◽  
Hierarchical Pore ◽  
Porous Carbon Spheres

Effects of Activation Conditions on Preparation of Coal Tar Pitch Based Mesoporous Activated Carbon Using Template and KOH Activation Method

2013 ◽  
Vol 634-638 ◽  
pp. 2170-2175 ◽  
Author(s):  
Ming Xia Fan ◽  
Xiao Ling Chen ◽  
Jing Jing Chen ◽  
Lei Mao
Keyword(s):  
Pore Structure ◽  
Activated Carbons ◽  
Coal Tar ◽  
Coal Tar Pitch ◽  
Koh Activation ◽  
Mass Ratio ◽  
Activation Time ◽  
Porous Network ◽  
Activation Temperature ◽  
Activation Conditions

Mesopores are essential to improve transport of molecules within porous network and to facilitate adsorption of larger molecules. Mesoporous activated carbons (MACs) were prepared by template synthesis and KOH activation, using modified coal tar pitch and nanosized silica as carbon precursor and imprinting template respectively. The influences of different activation conditions, including KOH/C mass ratio, activation temperature and activation time on the pore structure of MACs have been studied. The SBET, total volume and mesopore volume of the result MAC were 1356 m2/g, 0.910mL/g and 0.704 mL/g respectively, when activation conditions with KOH/C mass ratio was 3.6:1, activation temperature was 850°C and activation time was 2.0h. It is possible to control their pore structure by selecting appropriate activation conditions depending on the final application of the MACs.

scholarly journals Author Correction: Tuning the hierarchical pore structure of graphene oxide through dual thermal activation for high-performance supercapacitor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jeongpil Kim ◽  
Jeong-Hyun Eum ◽  
Junhyeok Kang ◽  
Ohchan Kwon ◽  
Hansung Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Pore Structure ◽  
High Performance ◽  
Thermal Activation ◽  
Hierarchical Pore Structure ◽  
Hierarchical Pore

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Preparation of carbon-based monolithic CO2 adsorbents with hierarchical pore structure

2020 ◽  
Vol 388 ◽  
pp. 124308 ◽  
Author(s):  
Edith Mawunya Kutorglo ◽  
Jakub Kovačovič ◽  
Dan Trunov ◽  
Fatima Hassouna ◽  
Anna Fučíková ◽  
...  
Keyword(s):  
Pore Structure ◽  
Hierarchical Pore Structure ◽  
Hierarchical Pore ◽  
Carbon Based

Hierarchical Pore Structure and Wetting Properties of Single-Wall Carbon Nanotube Fibers

Nano Letters ◽  
2003 ◽  
Vol 3 (3) ◽  
pp. 419-423 ◽  
Author(s):  
Alexander V. Neimark ◽  
Sigrid Ruetsch ◽  
Konstantin G. Kornev ◽  
Peter I. Ravikovitch ◽  
Philippe Poulin ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Pore Structure ◽  
Single Wall Carbon Nanotube ◽  
Single Wall Carbon ◽  
Wetting Properties ◽  
Hierarchical Pore Structure ◽  
Hierarchical Pore ◽  
Carbon Nanotube Fibers

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.

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