Nitrogen-doped heterostructure carbon functionalized by electroactive organic molecules for asymmetric supercapacitors with high energy density

RSC Advances ◽  
2016 ◽  
Vol 6 (46) ◽  
pp. 40602-40614 ◽  
Author(s):  
Bingshu Guo ◽  
Zhongai Hu ◽  
Yufeng An ◽  
Ning An ◽  
Pengfei Jia ◽  
...  
Keyword(s):  
Energy Density ◽  
Organic Molecules ◽  
Electrode Materials ◽  
High Energy ◽  
Noncovalent Interaction ◽  
High Energy Density ◽  
Asymmetric Supercapacitors ◽  
Nitrogen Doped ◽  
Redox Center

The organic molecules (TCBQ, AQ) with multi-electron redox center are selected to modify nitrogen-doped heterostructure carbon (NHC) by noncovalent interaction and the electrode materials show good performances and potential self-matching behaviors.

Hierarchical copper cobalt sulfide nanobelt arrays for high performance asymmetric supercapacitors

2021 ◽  
Author(s):  
Leiyun Han ◽  
Xilong Liu ◽  
zheng cui ◽  
Yingjie Hua ◽  
Chongtai Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Electrode Materials ◽  
Solvothermal Method ◽  
Morphology Control ◽  
High Energy ◽  
High Energy Density ◽  
Cobalt Sulfide ◽  
Asymmetric Supercapacitors ◽  
Array Structures

Hierarchical copper cobalt sulfide nanobelt array structures with well-defined morphology control are first reported as high energy density electrode materials for asymmetric supercapacitors using a simple two-step solvothermal method. Through...

Recent progresses in high-energy-density all pseudocapacitive-electrode-materials-based asymmetric supercapacitors

2017 ◽  
Vol 5 (20) ◽  
pp. 9443-9464 ◽  
Author(s):  
Jinfeng Sun ◽  
Chen Wu ◽  
Xiaofei Sun ◽  
Hong Hu ◽  
Chunyi Zhi ◽  
...  
Keyword(s):  
Energy Density ◽  
System Design ◽  
Electrode Materials ◽  
High Energy ◽  
High Energy Density ◽  
Design Engineering ◽  
Asymmetric Supercapacitors

This review elaborately summarizes the latest progress in all-pseudocapacitive asymmetric supercapacitors, including aqueous/nonaqueous faradaic electrode materials, the operating principles, system design/engineering, and rational optimization.

Nitrogen-doped porous carbon derived from residuary shaddock peel: a promising and sustainable anode for high energy density asymmetric supercapacitors

2016 ◽  
Vol 4 (2) ◽  
pp. 372-378 ◽  
Author(s):  
Kang Xiao ◽  
Liang-Xin Ding ◽  
Hongbin Chen ◽  
Suqing Wang ◽  
Xihong Lu ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrode Material ◽  
Porous Carbon ◽  
High Energy ◽  
High Energy Density ◽  
High Quality ◽  
Asymmetric Supercapacitors ◽  
Biomass Waste ◽  
Nitrogen Doped

We introduce a strategy to convert crude biomass waste into high quality porous carbon and use it as an electrode material for high energy density asymmetric supercapacitors.

Advanced asymmetric supercapacitors based on Ni3(PO4)2@GO and Fe2O3@GO electrodes with high specific capacitance and high energy density

RSC Advances ◽  
2015 ◽  
Vol 5 (52) ◽  
pp. 41721-41728 ◽  
Author(s):  
Jia-Jia Li ◽  
Mao-Cheng Liu ◽  
Ling-Bin Kong ◽  
Dan Wang ◽  
Yu-Mei Hu ◽  
...  
Keyword(s):  
Energy Density ◽  
Specific Capacitance ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors

Ni3(PO4)2@GO and Fe2O3@GO have been successfully synthesized as electrode materials, and they have been used to assemble an asymmetric supercapacitor (Fe2O3@GO//Ni3(PO4)2@GO), which exhibited a high energy density.

scholarly journals Nitrogen-enriched graphene framework from a large-scale magnesiothermic conversion of CO2 with synergistic kinetics for high-power lithium-ion capacitors

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Chen Li ◽  
Xiong Zhang ◽  
Kai Wang ◽  
Xianzhong Sun ◽  
Yanan Xu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Power ◽  
Power Output ◽  
Large Scale ◽  
Electrode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Chemical Doping ◽  
Lithium Ion Capacitor

AbstractLithium-ion capacitors are envisaged as promising energy-storage devices to simultaneously achieve a large energy density and high-power output at quick charge and discharge rates. However, the mismatched kinetics between capacitive cathodes and faradaic anodes still hinder their practical application for high-power purposes. To tackle this problem, the electron and ion transport of both electrodes should be substantially improved by targeted structural design and controllable chemical doping. Herein, nitrogen-enriched graphene frameworks are prepared via a large-scale and ultrafast magnesiothermic combustion synthesis using CO2 and melamine as precursors, which exhibit a crosslinked porous structure, abundant functional groups and high electrical conductivity (10524 S m−1). The material essentially delivers upgraded kinetics due to enhanced ion diffusion and electron transport. Excellent capacities of 1361 mA h g−1 and 827 mA h g−1 can be achieved at current densities of 0.1 A g−1 and 3 A g−1, respectively, demonstrating its outstanding lithium storage performance at both low and high rates. Moreover, the lithium-ion capacitor based on these nitrogen-enriched graphene frameworks displays a high energy density of 151 Wh kg−1, and still retains 86 Wh kg−1 even at an ultrahigh power output of 49 kW kg−1. This study reveals an effective pathway to achieve synergistic kinetics in carbon electrode materials for achieving high-power lithium-ion capacitors.

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