Controllable synthesis of nitrogen-doped hollow mesoporous carbon spheres using ionic liquids as template for supercapacitors

2017 ◽  
Vol 393 ◽  
pp. 151-158 ◽  
Author(s):  
Aibing Chen ◽  
Yunqian Li ◽  
Lei Liu ◽  
Yifeng Yu ◽  
Kechan Xia ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Mesoporous Carbon ◽  
Carbon Spheres ◽  
Controllable Synthesis ◽  
Nitrogen Doped

scholarly journals High Capacity and Fast Kinetics of Potassium-Ion Batteries Boosted by Nitrogen-Doped Mesoporous Carbon Spheres

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Jiefeng Zheng ◽  
Yuanji Wu ◽  
Yong Tong ◽  
Xi Liu ◽  
Yingjuan Sun ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Active Sites ◽  
Carbon Materials ◽  
Potassium Ion ◽  
High Rate ◽  
Electrochemical Performances ◽  
Carbon Spheres ◽  
Fast Kinetics ◽  
Nitrogen Doped ◽  
Economic Price

AbstractIn view of rich potassium resources and their working potential, potassium-ion batteries (PIBs) are deemed as next generation rechargeable batteries. Owing to carbon materials with the preponderance of durability and economic price, they are widely employed in PIBs anode materials. Currently, porosity design and heteroatom doping as efficacious improvement strategies have been applied to the structural design of carbon materials to improve their electrochemical performances. Herein, nitrogen-doped mesoporous carbon spheres (MCS) are synthesized by a facile hard template method. The MCS demonstrate larger interlayer spacing in a short range, high specific surface area, abundant mesoporous structures and active sites, enhancing K-ion migration and diffusion. Furthermore, we screen out the pyrolysis temperature of 900 °C and the pore diameter of 7 nm as optimized conditions for MCS to improve performances. In detail, the optimized MCS-7-900 electrode achieves high rate capacity (107.9 mAh g−1 at 5000 mA g−1) and stably brings about 3600 cycles at 1000 mA g−1. According to electrochemical kinetic analysis, the capacitive-controlled effects play dominant roles in total storage mechanism. Additionally, the full-cell equipped MCS-7-900 as anode is successfully constructed to evaluate the practicality of MCS.

One-pot synthesis of nitrogen-doped ordered mesoporous carbon spheres for high-rate and long-cycle life supercapacitors

Carbon ◽  
2018 ◽  
Vol 127 ◽  
pp. 85-92 ◽  
Author(s):  
Jian-Gan Wang ◽  
Hongzhen Liu ◽  
Huanhuan Sun ◽  
Wei Hua ◽  
Huwei Wang ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Cycle Life ◽  
High Rate ◽  
Carbon Spheres ◽  
One Pot ◽  
Nitrogen Doped ◽  
Long Cycle Life ◽  
One Pot Synthesis ◽  
Ordered Mesoporous

Silica-Assisted Assembly for Synthesis of Nitrogen-Doped Hollow Mesoporous Carbon Spheres as Supercapacitors

2017 ◽  
Vol 164 (9) ◽  
pp. A1918-A1923 ◽  
Author(s):  
Yuying Wang ◽  
Juan Du ◽  
Hongliang Zhang ◽  
Lei Liu ◽  
Yifeng Yu ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Carbon Spheres ◽  
Nitrogen Doped

Controllable synthesis of Mn3O4 nanodots@nitrogen-doped graphene and its application for high energy density supercapacitors

2017 ◽  
Vol 5 (11) ◽  
pp. 5523-5531 ◽  
Author(s):  
Li Liu ◽  
Lijun Su ◽  
Junwei Lang ◽  
Bin Hu ◽  
Shan Xu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Controllable Synthesis ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Supercapacitors using ionic liquids (ILs) as electrolytes have triggered great interest due to their much higher energy density when compared to aqueous supercapacitors.

Controllable synthesis of N-doped hollow-structured mesoporous carbon spheres by an amine-induced Stöber-silica/carbon assembly process

2016 ◽  
Vol 4 (30) ◽  
pp. 11916-11923 ◽  
Author(s):  
Chao Liu ◽  
Jing Wang ◽  
Jiansheng Li ◽  
Xingru Hu ◽  
Peng Lin ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Assembly Process ◽  
Carbon Spheres ◽  
Controllable Synthesis

An amine-induced Stöber-silica/carbon assembly process is developed for the controllable synthesis of N-doped carbon spheres.

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