Remarkable capacitive behavior of a Co3O4–polyindole composite as electrode material for supercapacitor applications

2015 ◽  
Vol 3 (48) ◽  
pp. 24338-24348 ◽  
Author(s):  
R. Pavul Raj ◽  
P. Ragupathy ◽  
S. Mohan
Keyword(s):  
Synergistic Effect ◽  
Specific Capacitance ◽  
Electrode Material ◽  
Composite Electrode ◽  
High Specific Capacitance ◽  
Single Step ◽  
Rate Performance ◽  
Capacitive Behavior ◽  
Supercapacitor Applications

A single step synthesized Co3O4–polyindole composite electrode exhibits high specific capacitance, rate performance and cyclability. This enhanced electrochemical supercapacitive behavior is mainly attributed to the synergistic effect between Co3O4 and polyindole.

Manganese silicate drapes as a novel electrode material for supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105771-105779 ◽  
Author(s):  
Hong-Yan Wang ◽  
Yue-Ya Wang ◽  
Xue Bai ◽  
Huan Yang ◽  
Jian-Ping Han ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Electrode Material ◽  
High Specific Capacitance ◽  
Rate Performance ◽  
Hydrothermal Time ◽  
Manganese Silicate

Manganese silicate drapes (hydrothermal time of 3 h) exhibit high specific capacitance and excellent rate performance.

Graphene decorated with MoS2 nanosheets: a synergetic energy storage composite electrode for supercapacitor applications

2016 ◽  
Vol 45 (6) ◽  
pp. 2637-2646 ◽  
Author(s):  
R. Thangappan ◽  
S. Kalaiselvam ◽  
A. Elayaperumal ◽  
R. Jayavel ◽  
M. Arivanandhan ◽  
...  
Keyword(s):  
Energy Storage ◽  
Synergistic Effect ◽  
Specific Capacitance ◽  
Composite Electrode ◽  
Mos2 Nanosheets ◽  
Supercapacitor Applications

The synergistic effect of MoS2 and graphene with a specific capacitance of 270 F g−1 for the use of a higher performance energy storage composite electrode for supercapacitors is reported.

Nanosheet-assembled 3D nanoflowers of ruthenium oxide with superior rate performance for supercapacitor applications

RSC Advances ◽  
2014 ◽  
Vol 4 (31) ◽  
pp. 16115-16120 ◽  
Author(s):  
Ji-Young Kim ◽  
Kwang-Heon Kim ◽  
Hyun-Kyung Kim ◽  
Sang-Hoon Park ◽  
Kyung Yoon Chung ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Hydrothermal Process ◽  
Rate Capability ◽  
Ruthenium Oxide ◽  
High Specific Capacitance ◽  
Rate Performance ◽  
Porous Nanostructures ◽  
Microwave Hydrothermal ◽  
Oxide Nanostructures ◽  
Supercapacitor Applications

Novel ruthenium oxide nanostructures are synthesized via a microwave-hydrothermal process. An electrode based on the 3D nanoflowers exhibits high specific capacitance and superior rate capability, resulting from the hierarchical 3D porous nanostructures.

Facile one-step synthesis of a composite CuO/Co3O4 electrode material on Ni foam for flexible supercapacitor applications

2017 ◽  
Vol 41 (13) ◽  
pp. 5493-5497 ◽  
Author(s):  
Hee-Je Kim ◽  
Sang Yong Kim ◽  
Lun Jae Lim ◽  
Araveeti Eswar Reddy ◽  
Chandu V. V. Muralee Gopi
Keyword(s):  
Hydrothermal Synthesis ◽  
Specific Capacitance ◽  
Electrode Material ◽  
Composite Electrode ◽  
Cyclic Stability ◽  
Ni Foam ◽  
Flexible Supercapacitor ◽  
One Step ◽  
Supercapacitor Applications

CuO/Co3O4 nanospheres were grown on Ni foam via a simple, one-step hydrothermal synthesis. The resultant CuO/Co3O4 composite electrode exhibits superior specific capacitance and cyclic stability compared to the Co3O4 electrode.

Facile synthesis of a NiO/NiS hybrid and its use as an efficient electrode material for supercapacitor applications

2018 ◽  
Vol 42 (7) ◽  
pp. 5309-5313 ◽  
Author(s):  
Sang-Yong Kim ◽  
Chandu V. V. Muralee Gopi ◽  
Araveeti Eswar Reddy ◽  
Hee-Je Kim
Keyword(s):  
Hydrothermal Synthesis ◽  
Specific Capacitance ◽  
Electrode Material ◽  
Composite Electrode ◽  
Cost Effective ◽  
Cyclic Stability ◽  
Ni Foam ◽  
Facile Synthesis ◽  
Supercapacitor Applications

Cost-effective NiO/NiS nanosheets decorated with nanoparticles were successfully fabricated on Ni foam by carrying out a simple two-step hydrothermal synthesis. The resultant NiO/NiS composite electrode exhibited better specific capacitance and cyclic stability than did a NiO electrode.

Microwave synthesis of graphene/magnetite composite electrode material for symmetric supercapacitor with superior rate performance

RSC Advances ◽  
2012 ◽  
Vol 2 (32) ◽  
pp. 12322-12328 ◽  
Author(s):  
Kaliyappan Karthikeyan ◽  
Dharmalingam Kalpana ◽  
Samuthirapandian Amaresh ◽  
Yun Sung Lee
Keyword(s):  
Microwave Irradiation ◽  
Electrode Material ◽  
Microwave Synthesis ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Low Cost ◽  
Rate Performance ◽  
Microwave Irradiation Method ◽  
Symmetric Supercapacitor ◽  
Supercapacitor Applications

Pristine Fe3O4 and Fe3O4–graphene composites were synthesized by using a green and low cost urea assisted microwave irradiation method and utilized as electrode materials for symmetric supercapacitor applications.

scholarly journals Synthesis and Kinetic Analysis of «-MnO2 Nanowires for Supercapacitor Electrode

2021 ◽  
Vol 16 (2) ◽  
pp. 149-156
Author(s):  
Jiaojiao Li ◽  
Wenyao Li ◽  
Liping Huang ◽  
Caiyu Ma ◽  
Jingjing Liu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Kinetic Analysis ◽  
Specific Capacitance ◽  
Electrochemical Property ◽  
Electrode Material ◽  
High Specific Capacitance ◽  
Rate Performance ◽  
Supercapacitor Electrode ◽  
Diffusion Controlled ◽  
Mno2 Nanowires

As the electrode material of supercapacitor, MnO2 materials have attracted extensive concern and its electrochemical performance has been continuously optimized, but the kinetic analysis is rarely discussed. Herein, a-MnO2 nanowires with a uniform morphology were synthesized by hydrothermal method, which exhibits proven electrochemical property like outstanding circulation stability, demonstrated rate performance and high specific capacitance. In addition, diffusion-controlled Faradaic procedure and surface capacitance action were calculated and analyzed in detail.

scholarly journals Fabrication of Hierarchical NiMoO4/NiMoO4 Nanoflowers on Highly Conductive Flexible Nickel Foam Substrate as a Capacitive Electrode Material for Supercapacitors with Enhanced Electrochemical Performance

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1143 ◽  
Author(s):  
Anil Yedluri ◽  
Tarugu Anitha ◽  
Hee-Je Kim
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Electrode Material ◽  
High Performance ◽  
Nickel Foam ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Charge Discharge

Hierarchical NiMoO4/NiMoO4 nanoflowers were fabricated on highly conductive flexible nickel foam (NF) substrates using a facile hydrothermal method to achieve rapid charge-discharge ability, high energy density, long cycling lifespan, and higher flexibility for high-performance supercapacitor electrode materials. The synthesized composite electrode material, NF/NiMoO4/NiMoO4 with a nanoball-like NF/NiMoO4 structure on a NiMoO4 surface over a NF substrate, formed a three-dimensional interconnected porous network for high-performance electrodes. The novel NF/NiMoO4/NiMoO4 nanoflowers not only enhanced the large surface area and increased the electrochemical activity, but also provided an enhanced rapid ion diffusion path and reduced the charge transfer resistance of the entire electrode effectively. The NF/NiMoO4/NiMoO4 composite exhibited significantly improved supercapacitor performance in terms of a sustained cycling life, high specific capacitance, rapid charge-discharge capability, high energy density, and good rate capability. Electrochemical analysis of the NF/NiMoO4/NiMoO4 nanoflowers fabricated on the NF substrate revealed ultra-high electrochemical performance with a high specific capacitance of 2121 F g−1 at 12 mA g−1 in a 3 M KOH electrolyte and 98.7% capacitance retention after 3000 cycles at 14 mA g−1. This performance was superior to the NF/NiMoO4 nanoball electrode (1672 F g−1 at 12 mA g−1 and capacitance retention 93.4% cycles). Most importantly, the SC (NF/NiMoO4/NiMoO4) device displayed a maximum energy density of 47.13 W h kg−1, which was significantly higher than that of NF/NiMoO4 (37.1 W h kg−1). Overall, the NF/NiMoO4/NiMoO4 composite is a suitable material for supercapacitor applications.

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