scholarly journals Porous carbons derived from zinc-based nitrogen heterocyclic complexes combined with KOH activation for use as supercapacitors

2020 ◽  
pp. 174751982094336
Author(s):  
Shuai Ru ◽  
Zhaoquan Ai
Keyword(s):  
Porous Carbon ◽  
Carbon Materials ◽  
High Specific Capacitance ◽  
Koh Activation ◽  
Rate Performance ◽  
Porous Carbon Materials ◽  
Ion Storage ◽  
Method Of Solution ◽  
N Doping ◽  
Coordination Ability

2,2’-Bipyridine with strong coordination ability for metal ions was used to prepare N-doped porous carbon materials by a facile method of solution agitation and annealing, with KOH as the activated solvent. Applied to supercapacitors, these porous carbon materials exhibit high specific capacitance and outstanding rate performance, which are attributed to their larger specific surface area, richer pore structure, and N-doping after KOH activation, leading to fast electron transport and increased ion storage in the unique architecture.

scholarly journals Meso/Microporous Carbons from Conjugated Hyper-Crosslinked Polymers Based on Tetraphenylethene for High-Performance CO2 Capture and Supercapacitor

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 738
Author(s):  
Mohamed Gamal Mohamed ◽  
Mahmoud M. M. Ahmed ◽  
Wei-Ting Du ◽  
Shiao-Wei Kuo
Keyword(s):  
Porous Carbon ◽  
Carbon Materials ◽  
Total Pore Volume ◽  
Specific Area ◽  
High Specific Capacitance ◽  
Koh Activation ◽  
Co2 Uptake ◽  
Crosslinked Polymers ◽  
Good Thermal Stability ◽  
Porous Carbon Materials

In this study, we successfully synthesized two types of meso/microporous carbon materials through the carbonization and potassium hydroxide (KOH) activation for two different kinds of hyper-crosslinked polymers of TPE-CPOP1 and TPE-CPOP2, which were synthesized by using Friedel–Crafts reaction of tetraphenylethene (TPE) monomer with or without cyanuric chloride in the presence of AlCl3 as a catalyst. The resultant porous carbon materials exhibited the high specific area (up to 1100 m2 g−1), total pore volume, good thermal stability, and amorphous character based on thermogravimetric (TGA), N2 adsoprtion/desorption, and powder X-ray diffraction (PXRD) analyses. The as-prepared TPE-CPOP1 after thermal treatment at 800 °C (TPE-CPOP1-800) displayed excellent CO2 uptake performance (1.74 mmol g−1 at 298 K and 3.19 mmol g−1 at 273 K). Furthermore, this material possesses a high specific capacitance of 453 F g−1 at 5 mV s−1 comparable to others porous carbon materials with excellent columbic efficiencies for 10,000 cycle at 20 A g−1.

Cyano Groups: New Active Sites of Porous Carbon Materials Achieving a Superior K-ion Storage

Carbon ◽  
2021 ◽  
Author(s):  
Xiang Gao ◽  
Wei Liu ◽  
Tianqi Wang ◽  
Jingrou Dai ◽  
Yuanyuan Pan ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Active Sites ◽  
Carbon Materials ◽  
Porous Carbon Materials ◽  
Ion Storage ◽  
Cyano Groups

High-rate sodium ion anodes assisted by N-doped carbon sheets

2017 ◽  
Vol 1 (5) ◽  
pp. 1130-1136 ◽  
Author(s):  
Peng Ge ◽  
Hongshuai Hou ◽  
Nianci Liu ◽  
Xiaoqing Qiu ◽  
Qing Zeng ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Self Assembly ◽  
Carbon Materials ◽  
The Self ◽  
Sodium Ion ◽  
High Rate ◽  
Assembly Process ◽  
Nitrogen Doped ◽  
Porous Carbon Materials ◽  
N Doping

Well-defined 3D nitrogen-doped porous carbon materials (NPCMs) have been obtained from CQDs and melamine by the self-assembly process, presenting a distinct textural structure with uniform N-doping distribution.

Hierarchical porous carbon materials prepared using nano-ZnO as a template and activation agent for ultrahigh power supercapacitors

2016 ◽  
Vol 52 (77) ◽  
pp. 11512-11515 ◽  
Author(s):  
Haoran Wang ◽  
Shukai Yu ◽  
Bin Xu
Keyword(s):  
Porous Carbon ◽  
Carbon Materials ◽  
High Rate ◽  
Rate Performance ◽  
Hierarchical Porous Carbon ◽  
Porous Carbon Materials ◽  
Graphitic Structure ◽  
Hierarchical Porous ◽  
High Rate Performance ◽  
Hierarchical Porous Carbon Materials

Hierarchical porous carbon materials with a localized graphitic structure exhibit an outstanding high-rate performance.

S, N dual-doped porous carbon materials derived from biomass for Na ion storage and O2 electroreduction

2020 ◽  
Vol 294 ◽  
pp. 109930 ◽  
Author(s):  
Yifan Hu ◽  
Ruguang Ma ◽  
Qiangjian Ju ◽  
Beibei Guo ◽  
Minghui Yang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Carbon Materials ◽  
Porous Carbon Materials ◽  
Ion Storage

Homogeneous sulphur-doped composites: porous carbon materials with unique hierarchical porous nanostructure for super-capacitor application

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 84847-84853 ◽  
Author(s):  
Jie Zhang ◽  
Zhanxu Yang ◽  
Xiaorong Wang ◽  
Tieqiang Ren ◽  
Qingdong Qiao
Keyword(s):  
Layered Double Hydroxide ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Koh Activation ◽  
Two Dimensional ◽  
Super Capacitor ◽  
Porous Carbon Materials ◽  
Hierarchical Porous ◽  
Porous Nanostructure ◽  
Double Hydroxide

Homogeneous sulphur-doped porous carbon materials with a unique hierarchical porous nanostructure have been prepared by the combination of the two-dimensional interlayer confinement effect of a layered double hydroxide (LDH) and KOH activation method.

scholarly journals Adsorption enhancement of nitrogen gas by atomically heterogeneous nanospace of boron nitride

RSC Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 838-846
Author(s):  
Jun Kimura ◽  
Takahiro Ohkubo ◽  
Yuta Nishina ◽  
Koki Urita ◽  
Yasushige Kuroda
Keyword(s):  
Boron Nitride ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Heterogeneous Surfaces ◽  
Nitrogen Gas ◽  
Porous Carbon Materials

Porous BN with atomically heterogeneous surfaces can more strongly adsorb dinitrogen molecules than typical porous carbon materials.

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