Vanadium disulfide nanosheets loaded on carbon cloth as electrode for flexible quasi-solid-state asymmetric supercapacitors: Energy storage mechanism and electrochemical performance

2021 ◽  
Author(s):  
Mengyang Zhang ◽  
Jieyu Miao ◽  
Xuehua Yan ◽  
Yihan Zhu ◽  
Yanli Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Lower Energy ◽  
Energy Conversion Efficiency ◽  
High Energy ◽  
Carbon Cloth ◽  
Energy Storage Devices ◽  
Asymmetric Supercapacitors ◽  
Storage Devices ◽  
Storage Mechanism ◽  
High Energy Conversion Efficiency

Supercapacitor has predominated current discharge capacity and high energy conversion efficiency, which compared with other energy storage devices has little pollution to the environment. However, it generally exhibits lower energy...

scholarly journals Charge storage mechanism in nanoporous carbons and its consequence for electrical double layer capacitors

2010 ◽  
Vol 368 (1923) ◽  
pp. 3457-3467 ◽  
Author(s):  
Patrice Simon ◽  
Yury Gogotsi
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Nanoporous Carbons ◽  
Storage Devices ◽  
Storage Mechanism ◽  
Charge Storage Mechanism ◽  
Double Layer Capacitors

Electrochemical capacitors, also known as supercapacitors, are energy storage devices that fill the gap between batteries and dielectric capacitors. Thanks to their unique features, they have a key role to play in energy storage and harvesting, acting as a complement to or even a replacement of batteries which has already been achieved in various applications. One of the challenges in the supercapacitor area is to increase their energy density. Some recent discoveries regarding ion adsorption in microporous carbon exhibiting pores in the nanometre range can help in designing the next generation of high-energy-density supercapacitors.

scholarly journals MoO2 nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 20173-20183
Author(s):  
Yasai Wang ◽  
Guilin Feng ◽  
Yang Wang ◽  
Zhenguo Wu ◽  
Yanxiao Chen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur

Lithium–sulfur batteries are considered to be promising energy storage devices owing to their high energy density, relatively low price and abundant resources.

Mechanically robust glucose strutted graphene aerogel paper as a flexible electrode

2015 ◽  
Vol 3 (37) ◽  
pp. 19144-19147 ◽  
Author(s):  
Wee Siang Vincent Lee ◽  
Erwin Peng ◽  
Dian Chun Choy ◽  
Jun Min Xue
Keyword(s):  
Energy Storage ◽  
High Energy ◽  
Next Generation ◽  
Graphene Aerogel ◽  
Energy Storage Devices ◽  
Flexible Electrode ◽  
Storage Devices ◽  
Wearable Technologies

With the advent of next generation wearable technologies, energy storage devices at present not only have to achieve high energy densities, they also need to possess reasonable mechanical robustness.

Improving Supercapacitor Energy Density via Nanocarbon Electrode Functionalization and Increasing Electrolyte Electrochemical Window

MRS Advances ◽  
2016 ◽  
Vol 1 (19) ◽  
pp. 1377-1382
Author(s):  
Uladzimir Novikau ◽  
Sviatlana Filipovich ◽  
Ihar Razanau
Keyword(s):  
Activated Carbon ◽  
Energy Storage ◽  
Energy Density ◽  
Carbon Nanomaterials ◽  
Present Report ◽  
Carbon Powder ◽  
Carbon Cloth ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Electrochemical Window

ABSTRACTThe present report is dedicated to a study of possible ways of increasing the energy density of the supercapacitor and thus, bridging the gap between the supercapacitor and the battery. Chemical functionalization of carbon nanomaterials, such as carbon nanotubes, activated carbon cloth, and activated carbon powder used as supercapacitor electrodes as well as novel aqueous electrolytes with the electrochemical window of up to 2 V are described. The hybrid approaches to energy storage mechanism in electrochemical energy storage devices are discussed. The first experimental results on the discussed hybrid energy storage devices are presented.

Ionic liquid electrolytes supporting high energy density in sodium-ion batteries based on sodium vanadium phosphate composites

2018 ◽  
Vol 54 (28) ◽  
pp. 3500-3503 ◽  
Author(s):  
C. V. Manohar ◽  
Tiago Correia Mendes ◽  
Mega Kar ◽  
Dabin wang ◽  
Changlong Xiao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Cost Effective ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density ◽  
Sodium Ion Batteries ◽  
Vanadium Phosphate ◽  
Energy Storage Devices ◽  
Storage Devices

Sodium ion batteries (SIBs) are widely considered as alternative, sustainable, and cost-effective energy storage devices for large-scale energy storage applications.

Understanding the reaction mechanism and performances of 3d transition metal cathodes for all-solid-state fluoride ion batteries

2021 ◽  
Vol 9 (1) ◽  
pp. 406-412
Author(s):  
Datong Zhang ◽  
Kentaro Yamamoto ◽  
Aika Ochi ◽  
Yanchang Wang ◽  
Takahiro Yoshinari ◽  
...  
Keyword(s):  
Energy Storage ◽  
Reaction Mechanism ◽  
Solid State ◽  
Transition Metal ◽  
Cathode Materials ◽  
High Energy ◽  
Fluoride Ion ◽  
Energy Storage Devices ◽  
Storage Devices

Fluoride ion batteries (FIBs) are regarded as promising energy storage devices, and it is important and urgent to develop cathode materials with high energy densities for use in FIBs.

A bismuth oxide nanosheet-coated electrospun carbon nanofiber film: a free-standing negative electrode for flexible asymmetric supercapacitors

2016 ◽  
Vol 4 (42) ◽  
pp. 16635-16644 ◽  
Author(s):  
Lu Li ◽  
Xitian Zhang ◽  
Zhiguo Zhang ◽  
Mingyi Zhang ◽  
Lujia Cong ◽  
...  
Keyword(s):  
Energy Storage ◽  
Bismuth Oxide ◽  
Carbon Nanofiber ◽  
Negative Electrode ◽  
Next Generation ◽  
Energy Storage Devices ◽  
Free Standing ◽  
Asymmetric Supercapacitors ◽  
Storage Devices ◽  
Nanofiber Film

The development of a negative electrode for supercapacitors is very critical for the next-generation of energy-storage devices while it remains a great challenge.

scholarly journals Phenazine–Based Covalent Organic Framework Cathode Materials with High Energy and Power Densities

2019 ◽  
Author(s):  
Edon Vitaku ◽  
Cara Gannett ◽  
Keith Carpenter ◽  
Luxi Shen ◽  
Hector Abruna ◽  
...  
Keyword(s):  
Energy Storage ◽  
Conductive Polymer ◽  
Electrical Energy ◽  
High Energy ◽  
Energy Storage Devices ◽  
Electrical Energy Storage ◽  
Storage Devices ◽  
Redox Sites ◽  
Redox Active ◽  
Power Densities

Redox-active covalent organic frameworks (COFs) are promising materials for energy storage devices because of their high density of redox sites, permanent and controlled porosity, high surface areas, and tunable structures. However, the low electrochemical accessibility of their redox-active sites has limited COF-based devices either to thin films (<250 nm) grown on conductive substrates, or to thicker films (1 µm) when a conductive polymer is introduced into the COF pores. Electrical energy storage devices constructed from bulk microcrystalline COF powders, eliminating the need for both thin-film formation and conductive polymer guests, would offer both improved capacity and potentially scalable fabrication processes. Here we report on the synthesis and electrochemical evaluation of a new phenazine-based 2D COF (DAPH-TFP COF), as well as its composite with poly(3,4-ethylenedioxythiophene) (PEDOT). Both the COF and its PEDOT composite were evaluated as powders that were solution-cast onto bulk electrodes serving as current collectors. The unmodified DAPH-TFP COF exhibited excellent electrical access to its redox sites, even without PEDOT functionalization, and outperformed the PEDOT composite of a previously reported anthraquinone-based system. Devices containing DAPH-TFP COF were able to deliver both high energy (250 Wh/kg) and power densities (2950 W/kg), validating the promise of unmodified redox-active COFs that are easily incorporated into electrical energy storage devices.

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