Decoration of Hollow Mesoporous Carbon Spheres by NiCo2S4 Nanoparticles as Electrode Materials for Asymmetric Supercapacitors

2019 ◽  
Vol 2 (11) ◽  
pp. 8079-8089 ◽  
Author(s):  
Yongkun Liu ◽  
Guohua Jiang ◽  
Zheng Huang ◽  
Qiuling Lu ◽  
Bo Yu ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Electrode Materials ◽  
Carbon Spheres ◽  
Asymmetric Supercapacitors

Design of graphene-coated hollow mesoporous carbon spheres as high performance electrodes for capacitive deionization

2014 ◽  
Vol 2 (13) ◽  
pp. 4739-4750 ◽  
Author(s):  
Hui Wang ◽  
Liyi Shi ◽  
Tingting Yan ◽  
Jianping Zhang ◽  
Qingdong Zhong ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Capacitive Deionization ◽  
Carbon Spheres

Graphene-coated hollow mesoporous carbon spheres are rationally designed and originally used as efficient electrode materials for capacitive deionization.

Efficient Sucrose-derived mesoporous carbon spheres electrodes with enhanced hydrophilicity for water capacitive deionization at low cell voltages

2021 ◽  
Author(s):  
Rasha Kamel ◽  
Shaimaa Mohamed ◽  
Ahmed Shahat ◽  
Hassan Hassan ◽  
Sara Abd Elsalam
Keyword(s):  
Energy Efficient ◽  
Mesoporous Carbon ◽  
Electrode Materials ◽  
Water Desalination ◽  
Capacitive Deionization ◽  
Carbon Spheres ◽  
Efficient Technology ◽  
Energy Efficient Technology

Capacitive deionization is emerging as an energy-efficient technology for water desalination and research is continued to find better electrode materials in order to achieve favorable properties and good desalination behavior....

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.

Vacancies-engineered MoO3 and Na+-preinserted MnO2 in-situ grown N-doped graphene nanotubes as electrode materials for high-performance asymmetric supercapacitor

2021 ◽  
Author(s):  
Jian Zhao ◽  
He Cheng ◽  
Huanyu Li ◽  
Yan-Jie Wang ◽  
Qingyan Jiang ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
High Energy ◽  
Cooperative Effect ◽  
Electrochemical Energy Storage ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Doped Graphene ◽  
Power Densities

Developing advanced negative and positive electrode materials for asymmetric supercapacitors (ASCs) as the electrochemical energy storage can enable the device to reach high energy/power densities resulting from the cooperative effect...

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