Nanostructured Ni compounds as electrode materials towards high-performance electrochemical capacitors

2016 ◽  
Vol 4 (38) ◽  
pp. 14509-14538 ◽  
Author(s):  
Yunjun Ruan ◽  
Chundong Wang ◽  
Jianjun Jiang
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Electrochemical Capacitors ◽  
Electrochemical Capacitor

This tutorial review focuses on the recent development of Ni compounds-based electrode materials toward high-performance electrochemical capacitor applications.

Biomass-derived interconnected carbon nanoring electrochemical capacitors with high performance in both strongly acidic and alkaline electrolytes

2017 ◽  
Vol 5 (1) ◽  
pp. 181-188 ◽  
Author(s):  
Xianjun Wei ◽  
Yongbin Li ◽  
Shuyan Gao
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Electrochemical Capacitors ◽  
High Rate ◽  
Alkaline Electrolytes

The match between sustainable electrode materials and electrolytes is the key to achieve high-rate electrochemical capacitors.

scholarly journals Fabrication of Vertical-Standing Co-MOF Nanoarrays with 2D Parallelogram-like Morphology for Aqueous Asymmetric Electrochemical Capacitors

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5394
Author(s):  
Leyuan Li ◽  
Hongtian Mi ◽  
Yuhong Jin ◽  
Dayong Ren ◽  
Kailing Zhou ◽  
...  
Keyword(s):  
Power Density ◽  
Electrode Materials ◽  
Electrochemical Capacitors ◽  
Electrochemical Capacitor ◽  
Maximum Energy ◽  
Energy Storage And Conversion ◽  
Ni Foam ◽  
Simple Method ◽  
High Area ◽  
Carbon Coated

Metal organic frameworks (MOFs) have been considered as one of the most promising electrode materials for electrochemical capacitors due to their large specific surface area and abundant pore structure. Herein, we report a Co-MOF electrode with a vertical-standing 2D parallelogram-like nanoarray structure on a Ni foam substrate via a one-step solvothermal method. The as-prepared Co-MOF on a Ni foam electrode delivered a high area-specific capacitance of 582.0 mC cm−2 at a current density of 2 mA cm−2 and a good performance rate of 350.0 mC cm−2 at 50 mA cm−2. Moreover, an asymmetric electrochemical capacitor (AEC) device (Co-MOF on Ni foam//AC) was assembled by using the as-prepared Co-MOF on a Ni foam as the cathode and a active carbon-coated Ni foam as the anode to achieve a maximum energy density of 0.082 mW cm−2 at a power density of 0.8 mW cm−2, which still maintained 0.065 mW cm−2 at a high power density of 11.94 mW cm−2. Meanwhile, our assembled device exhibited an excellent cycling stability with a capacitance retention of nearly 100% after 1000 cycles. Therefore, this work provides a simple method to prepare MOF-based material for the application of energy storage and conversion.

Electrochemical Charge Storage Performance of Mesoporous MoO3@Co3O4 Nanocomposites as Electrode Materials

2021 ◽  
Author(s):  
Dillip Kumar Mohapatra ◽  
Swetapadma Praharaj ◽  
Dibyaranjan Rout
Keyword(s):  
Redox Reactions ◽  
High Performance ◽  
Electrode Materials ◽  
Coulombic Efficiency ◽  
Average Pore Size ◽  
Electrochemical Capacitors ◽  
Bet Surface Area ◽  
Average Pore ◽  
Storage Performance ◽  
Reversible Redox

Abstract Constructing a novel nanocomposite structure based on Co3O4 is of the current interest to design and develop efficient electrochemical capacitors. The capacitive performance of MoO3@Co3O4 nanocomposite is compared with pristine Co3O4 nanoparticles, both of them being synthesized by hydrothermal technique. A BET surface area of ~41 m2g-1 (almost twice that of Co3O4 )and average pore size of 3.6 nm is found to be suitable for promoting Faradaic reactions in the nanocomposite. Electrochemical measurements conducted on both samples predict capacitive behavior with quasi-reversible redox reactions. MoO3@Co3O4 nanocomposite is capable of delivering a superior specific capacitance of 1248 Fg-1 at 0.5 Ag-1 along with notable stability of 92% even after 2000 cycles of charge-discharge and Coulombic efficiency approaching 100% at 10 Ag-1. The outstanding results obtained in this work assure functional adequacy of MoO3@Co3O4 nanocomposite in fabricating high-performance electrochemical capacitors.

Cobalt-based compounds and composites as electrode materials for high-performance electrochemical capacitors

2014 ◽  
Vol 2 (41) ◽  
pp. 17212-17248 ◽  
Author(s):  
Kian Keat Lee ◽  
Wee Shong Chin ◽  
Chorng Haur Sow
Keyword(s):  
High Performance ◽  
Recent Progress ◽  
Electrode Materials ◽  
Electrochemical Capacitors

Recent progress, achievements, challenges and outlook in the (re)search of high performance cobalt-based compounds and composites for electrochemical capacitors.

High performance electrochemical capacitors based on MnO2/activated-carbon-paper

2015 ◽  
Vol 3 (24) ◽  
pp. 6166-6171 ◽  
Author(s):  
Zhiyu Cheng ◽  
Guiping Tan ◽  
Yongfu Qiu ◽  
Bing Guo ◽  
Faliang Cheng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Specific Capacitance ◽  
High Performance ◽  
Electrochemical Capacitors ◽  
Rate Capability ◽  
Electrochemical Capacitor ◽  
High Specific Capacitance ◽  
Carbon Paper ◽  
First Time

The composite MnO2/activated-carbon-paper has been reported for the first time and it shows high specific capacitance and remarkable rate capability as an electrochemical capacitor.

Electrochemical polymerization of pyrene and aniline exclusively inside the pores of activated carbon for high-performance asymmetric electrochemical capacitors

Nanoscale ◽  
2018 ◽  
Vol 10 (20) ◽  
pp. 9760-9772 ◽  
Author(s):  
Hiroyuki Itoi ◽  
Shintaro Maki ◽  
Takeru Ninomiya ◽  
Hideyuki Hasegawa ◽  
Hidenori Matsufusa ◽  
...  
Keyword(s):  
Activated Carbon ◽  
High Performance ◽  
Electrochemical Polymerization ◽  
Electrochemical Capacitors ◽  
Electrochemical Capacitor

Polypyrene and polyaniline are synthesized exclusively inside the pores of activated carbon for high-performance asymmetric electrochemical capacitor electrodes.

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