Mangano (III) vanadate as a synergistic component in high-performance symmetric supercapacitor

2021 ◽  
pp. 163239
Author(s):  
Sukanya Maity ◽  
Anjana Anandan Vannathan ◽  
Pranay R. Chandewar ◽  
Debaprasad Shee ◽  
Partha Pratim Das ◽  
...  
Keyword(s):  
High Performance ◽  
Symmetric Supercapacitor

Aryne cycloaddition reaction as a facile and mild modification method for design of electrode materials for high-performance symmetric supercapacitor

2021 ◽  
Vol 369 ◽  
pp. 137667
Author(s):  
Elizaveta Sviridova ◽  
Min Li ◽  
Alexandre Barras ◽  
Ahmed Addad ◽  
Mekhman S. Yusubov ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Cycloaddition Reaction ◽  
Symmetric Supercapacitor ◽  
Modification Method

Construction of IrO2@Mn3O4 core-shell heterostructured nanocomposites for high performance symmetric supercapacitor device

2021 ◽  
pp. 161328
Author(s):  
S.A. Beknalkar ◽  
A.M. Teli ◽  
N.S. Harale ◽  
J.C. Shin ◽  
P.S. Patil
Keyword(s):  
High Performance ◽  
Core Shell ◽  
Symmetric Supercapacitor

Functionalization and Tip-open of Carbon Nanotubes for High-Performance Symmetric Supercapacitor

2021 ◽  
Author(s):  
Yaxiong Zhang ◽  
Erqing Xie
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Specific Surface ◽  
Surface Area ◽  
Chemical Stability ◽  
High Aspect Ratio ◽  
High Performance ◽  
Large Specific Surface Area ◽  
Symmetric Supercapacitor

Carbon nanotubes (CNTs) have been widely studied as supercapacitor electrodes because of their excellent conductivity, high aspect ratio, excellent mechanical properties, chemical stability, and large specific surface area. However, the...

High-performance symmetric supercapacitor based on new functionalized graphene oxide composites with pyrimidine nucleotide and nucleoside

2021 ◽  
pp. 118381
Author(s):  
Mohammad Dashti Najafi ◽  
Elaheh Kowsari ◽  
Hamid Reza Naderi ◽  
Saeedeh Sarabadani Tafreshi ◽  
Amutha Chinnappan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Performance ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Pyrimidine Nucleotide ◽  
Symmetric Supercapacitor ◽  
Oxide Composites

The preparations of nanoporous carbon with multi-heteroatoms co-doping from black liquor powders for supercapacitors

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Pengfei Hao ◽  
Yanjie Yi ◽  
Youming Li ◽  
Yi Hou
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Black Liquor ◽  
Nanoporous Carbon ◽  
Electrode System ◽  
Industrial Wastes ◽  
Co Doping ◽  
Paper Making ◽  
Symmetric Supercapacitor

Abstract A green and economically viable route without any additional activation agents and templates has been developed to synthesize biomass-derived nanoporous carbon for superior electric double-layer capacitors via direct pyrolysis of dried black liquor powders, which is the main waste in pulping and paper-making industry. The resulting carbon materials present hierarchical porosity and moderate specific surface area of 1134  m 2 g − 1 {\text{m}^{2}}\hspace{0.1667em}{\text{g}^{-1}} , as well as multi-heteroatoms co-doping such as N, S, Na and K, which exist originally in black liquor. When evaluated as electrode materials for supercapacitors in 6 M KOH aqueous electrolyte, the-prepared carbon samples deliver a significantly high gravimetric capacitance of 331  F g − 1 \text{F}\hspace{0.1667em}{\text{g}^{-1}} at 0.5  A g − 1 \text{A}\hspace{0.1667em}{\text{g}^{-1}} in a three-electrode system. Moreover, the fabricated symmetric supercapacitor also possesses a gravimetric capacitance of 211  F g − 1 \text{F}\hspace{0.1667em}{\text{g}^{-1}} at 0.5  A g − 1 \text{A}\hspace{0.1667em}{\text{g}^{-1}} , with an impressive long-term cycling stability of 92 % capacitance retention after 3000 cycles. This work explores a suitable and scalable approach for mass production of high-performance electrode materials with industrial wastes on the base of cost-efficiency and environment-friendship.

Carbon foam@reduced graphene oxide scaffold grown with polyaniline nanofibers for high performance symmetric supercapacitor

2019 ◽  
Vol 294 ◽  
pp. 376-382 ◽  
Author(s):  
Xiaodong Hong ◽  
Yugang Lu ◽  
Shunli Li ◽  
Xuelei Wang ◽  
Xiaowei Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Carbon Foam ◽  
Polyaniline Nanofibers ◽  
Reduced Graphene ◽  
Symmetric Supercapacitor

High performance fiber-shaped all-solid-state symmetric supercapacitor based on mesoporous CuCo2S4 nanosheets

2018 ◽  
Vol 30 (1) ◽  
pp. 667-676 ◽  
Author(s):  
Jiqiu Qi ◽  
Xiaofeng Liu ◽  
Yanwei Sui ◽  
Yezeng He ◽  
Yaojian Ren ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Symmetric Supercapacitor ◽  
High Performance Fiber

Mn incorporated MoS2 nanoflowers: A high performance electrode material for symmetric supercapacitor

2020 ◽  
Vol 338 ◽  
pp. 135815 ◽  
Author(s):  
Shib Shankar Singha ◽  
Siddheswar Rudra ◽  
Suchanda Mondal ◽  
Mukul Pradhan ◽  
Arpan Kumar Nayak ◽  
...  
Keyword(s):  
Electrode Material ◽  
High Performance ◽  
Symmetric Supercapacitor

scholarly journals A Ni(OH)2 nanopetals network for high-performance supercapacitors synthesized by immersing Ni nanofoam in water

2019 ◽  
Vol 10 ◽  
pp. 281-293 ◽  
Author(s):  
Donghui Zheng ◽  
Man Li ◽  
Yongyan Li ◽  
Chunling Qin ◽  
Yichao Wang ◽  
...  
Keyword(s):  
Power Density ◽  
Current Density ◽  
High Performance ◽  
Low Cost ◽  
Electrode Reaction ◽  
Commercial Application ◽  
Ion Diffusion ◽  
Symmetric Supercapacitor ◽  
Red Led ◽  
A Current

Developing a facile and environmentally friendly approach to the synthesis of nanostructured Ni(OH)2 electrodes for high-performance supercapacitor applications is a great challenge. In this work, we report an extremely simple route to prepare a Ni(OH)2 nanopetals network by immersing Ni nanofoam in water. A binder-free composite electrode, consisting of Ni(OH)2 nanopetals network, Ni nanofoam interlayer and Ni-based metallic glass matrix (Ni(OH)2/Ni-NF/MG) with sandwich structure and good flexibility, was designed and finally achieved. Microstructure and morphology of the Ni(OH)2 nanopetals were characterized. It is found that the Ni(OH)2 nanopetals interweave with each other and grow vertically on the surface of Ni nanofoam to form an “ion reservoir”, which facilitates the ion diffusion in the electrode reaction. Electrochemical measurements show that the Ni(OH)2/Ni-NF/MG electrode, after immersion in water for seven days, reveals a high volumetric capacitance of 966.4 F/cm3 at a current density of 0.5 A/cm3. The electrode immersed for five days exhibits an excellent cycling stability (83.7% of the initial capacity after 3000 cycles at a current density of 1 A/cm3). Furthermore, symmetric supercapacitor (SC) devices were assembled using ribbons immersed for seven days and showed a maximum volumetric energy density of ca. 32.7 mWh/cm3 at a power density of 0.8 W/cm3, and of 13.7 mWh/cm3 when the power density was increased to 2 W/cm3. The fully charged SC devices could light up a red LED. The work provides a new idea for the synthesis of nanostructured Ni(OH)2 by a simple approach and ultra-low cost, which largely extends the prospect of commercial application in flexible or wearable devices.

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