Pseudocapacitive Behavior of Ni(OH)2/NiO Hierarchical Structures Grown on Carbon Fiber Paper

2017 ◽  
Vol 266 ◽  
pp. 177-181 ◽  
Author(s):  
Luigi A. Dahonog ◽  
Joey D. Ocon ◽  
Mary Donnabelle L. Balela
Keyword(s):  
Carbon Fiber ◽  
Specific Capacitance ◽  
Transition Metal Oxides ◽  
Hierarchical Structures ◽  
High Specific Capacitance ◽  
Carbon Fiber Electrodes ◽  
Carbon Fiber Paper ◽  
Binder Free ◽  
Pseudocapacitive Behavior ◽  
Carbon Fiber Electrode

Transition metal oxides and hydroxides, specifically nickel (Ni), are currently being studied for their pseudocapacitive behaviors due to their high specific capacitance and efficient redox reactions. In this study, nickel oxide (NiO) and nickel hydroxide [Ni (OH)2] hierarchical structures were grown on carbon fiber paper via hydrothermal treatment for a binder-free electrode for pseudocapacitor. Cyclic voltammetry was employed to determine the influence of annealing temperature on the specific capacitance of NiO-and/or Ni (OH)2 – carbon fiber electrodes. The NiO – carbon fiber electrode annealed at 400°C exhibited the highest specific capacitance of about 1993.12 F/g at a scan rate of 2 mV/s. The carbon fibers were fully covered by NiO platelets which possibly provide efficient transport of electrolyte, enhancing the capacitance.

Highly conductive electrocatalytic gold nanoparticle-assembled carbon fiber electrode for high-performance glucose-based biofuel cells

2019 ◽  
Vol 7 (22) ◽  
pp. 13495-13505 ◽  
Author(s):  
Cheong Hoon Kwon ◽  
Yongmin Ko ◽  
Dongyeeb Shin ◽  
Seung Woo Lee ◽  
Jinhan Cho
Keyword(s):  
Carbon Fiber ◽  
Gold Nanoparticle ◽  
High Power ◽  
High Performance ◽  
Biofuel Cells ◽  
Au Nanoparticle ◽  
Layer By Layer ◽  
Carbon Fiber Electrodes ◽  
Carbon Fiber Electrode ◽  
Fiber Electrode

Au nanoparticle-coated highly conductive carbon fiber electrodes for high-power glucose-biofuel cells were developed based on a layer-by-layer assembling method.

Engineering of electrodeposited binder-free organic-nickel hydroxide based nanohybrids for energy storage and electrocatalytic alkaline water splitting

2020 ◽  
Vol 4 (3) ◽  
pp. 1320-1331 ◽  
Author(s):  
Rohit G. Jadhav ◽  
Devraj Singh ◽  
Shaikh M. Mobin ◽  
Apurba K. Das
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Water Splitting ◽  
Nickel Hydroxide ◽  
High Specific Capacitance ◽  
Alkaline Water ◽  
Binder Free

A binder-free electrodeposited organic–inorganic multifunctional nanohybrid electrode exhibits high specific capacitance with electrocatalytic water splitting performance.

Hierarchical core/shell structure of MnO2@polyaniline composites grown on carbon fiber paper for application in pseudocapacitors

2015 ◽  
Vol 17 (44) ◽  
pp. 29874-29879 ◽  
Author(s):  
MinHo Yang ◽  
Seok Bok Hong ◽  
Bong Gill Choi
Keyword(s):  
Carbon Fiber ◽  
Shell Structure ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
High Rate ◽  
Core Shell ◽  
High Rate Capability ◽  
Carbon Fiber Paper ◽  
Core Shell Structure ◽  
Polyaniline Composites

Hierarchical core/shell structured arrays of MnO2@polyaniline nanosheets synthesized on the surface of carbon fiber paper, showed high specific capacitance, high rate capability, and good cycle life.

Effect of dopant on the morphology and electrochemical performance of Ni1-xCaxCo2O4 (0 ≤ x ≤ 0.8) oxide hierarchical structures

MRS Advances ◽  
2020 ◽  
pp. 1-8
Author(s):  
D. Guragain ◽  
C. Zequine ◽  
R. Bhattarai ◽  
J. Choi ◽  
R. K. Gupta ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Energy Band ◽  
Electrode Materials ◽  
Morphological Structure ◽  
Hierarchical Structures ◽  
High Specific Capacitance ◽  
Supercapacitor Electrode ◽  
Binary Metal Oxides ◽  
Supercapacitor Electrode Materials

ABSTRACT The binary metal oxides are increasingly used as supercapacitor electrode materials in energy storing devices. Particularly NiCo2O4 has shown promising electrocapacitive performance with high specific capacitance and energy density. The electrocapacitive performance of these oxides largely depends on their morphology and electrical properties governed by their energy band-gaps and defects. The morphological structure of NiCo2O4 can be altered via the synthesis route, while the energy band-gap could be altered by doping. Also, doping can enhance crystal stability and bring in grain refinement, which can further improve the much-needed surface area for high specific capacitance. Given the above, this study evaluates the electrochemical performance of Ca-doped Ni1-xCaxCo2O4 (0 ≤ x ≤ 0.8) compounds. This stipulates promising applications for electrodes in future supercapacitors.

One-step hydrothermal synthesis of Ni3S4@MoS2 nanosheet on carbon fiber paper as a binder-free anode for supercapacitor

2017 ◽  
Vol 28 (17) ◽  
pp. 12747-12754 ◽  
Author(s):  
Feng Huang ◽  
Aihua Yan ◽  
Yanwei Sui ◽  
Fuxiang Wei ◽  
Jiqiu Qi ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Carbon Fiber ◽  
One Step ◽  
Carbon Fiber Paper ◽  
Binder Free ◽  
Mos2 Nanosheet

MnO2 nanowires-decorated carbon fiber cloth as electrodes for aqueous asymmetric supercapacitor

2018 ◽  
Vol 11 (02) ◽  
pp. 1850034 ◽  
Author(s):  
Congcong Hong ◽  
Xing Wang ◽  
Houlin Yu ◽  
Huaping Wu ◽  
Jianshan Wang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Specific Capacitance ◽  
Current Density ◽  
Discharge Current ◽  
High Specific Capacitance ◽  
High Energy ◽  
Discharge Current Density ◽  
Carbon Fiber Cloth ◽  
A Charge ◽  
Charge Discharge

Manganese dioxide nanowires (MnO2 NWs) anchored on carbon fiber cloth (CFC) were fabricated through a simple hydrothermal reaction and used as integrated electrodes for supercapacitor. The morphology-dependent electrochemical performance of MnO2 NWs was confirmed, yielding good capacitance performance with a high specific capacitance of 3.88[Formula: see text][Formula: see text] at a charge–discharge current density of 5[Formula: see text][Formula: see text] and excellent stability of 91.5% capacitance retention after 3000 cycles. Moreover, the composite electrodes were used to fabricate supercapacitors, which showed a high specific capacitance of 194[Formula: see text][Formula: see text] at a charge–discharge current density of 2[Formula: see text][Formula: see text] and high energy density of 0.108[Formula: see text][Formula: see text] at power density of 2[Formula: see text][Formula: see text], foreboding its potential application for high-performance supercapacitor.

Co3O4 nanocrystal ink printed on carbon fiber paper as a large-area electrode for electrochemical water splitting

2015 ◽  
Vol 51 (38) ◽  
pp. 8066-8069 ◽  
Author(s):  
Shichao Du ◽  
Zhiyu Ren ◽  
Jun Zhang ◽  
Jun Wu ◽  
Wang Xi ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Oleic Acid ◽  
Carbon Fiber ◽  
Spray Deposition ◽  
Large Area ◽  
Acid Complex ◽  
Carbon Fiber Paper ◽  
Electrochemical Water Splitting ◽  
Carbon Fiber Electrode ◽  
Fiber Electrode

A large-area, self-supported Co3O4 nanocrystal/carbon fiber electrode for oxygen and hydrogen evolution reaction was fabricated via thermal decomposition of the [Co(NH3)n]2+–oleic acid complex and subsequent spray deposition.

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