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 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...

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.

High energy density asymmetric supercapacitors based on MOF-derived nanoporous carbon/manganese dioxide hybrids

2017 ◽  
Vol 322 ◽  
pp. 582-589 ◽  
Author(s):  
Mengyao Yao ◽  
Xin Zhao ◽  
Lei Jin ◽  
Fangyuan Zhao ◽  
Junxian Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Manganese Dioxide ◽  
High Energy ◽  
Nanoporous Carbon ◽  
High Energy Density ◽  
Asymmetric Supercapacitors

High energy density lithium ion batteries using Li2.6Co0.4−xCuxN (anode) and Cu0.04V2O5 (cathode) electrode materials

2008 ◽  
Vol 62 (26) ◽  
pp. 4210-4212 ◽  
Author(s):  
Daliang Liu ◽  
Shiying Zhan ◽  
Gang Chen ◽  
Wencheng Pan ◽  
Chunzhong Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Cathode Electrode

Core–Shell Structured NiCo2O4@ZnCo2O4 Nanomaterials with High Energy Density for Hybrid Capacitors

2021 ◽  
Vol 16 (7) ◽  
pp. 1134-1142
Author(s):  
Wenduo Yang ◽  
Jun Xiang ◽  
Sroeurb Loy ◽  
Nan Bu ◽  
Duo Cui ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrode Material ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Structural Characteristics ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Shell Composite ◽  
Hybrid Capacitors

NiCo2O4 as an electrode material for supercapacitors (SCs) has been studied by a host of researchers due to its unique structural characteristics and high capacitance. However, its performance has not yet reached the level of practical applications.it is an effective strategy to synthesize composite electrode materials for tackling the problem. Herein, NiCo2O4@ZnCo2O4 as a novel core–shell composite electrode material has been fabricated through a two-step simple hydrothermal method. The as-prepared sample can be directly used as cathode material of a supercapacitor, and its specific capacitance is 463.1 C/g at 1 A/g. An assembled capacitor has an energy density of 77 Wh·kg−1 at 2700 W·kg−1, and after 8000 cycles, 88% of the initial capacity remains.

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