Ag-doped manganese oxide prepared by electrochemical deposition on carbon fiber for supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (23) ◽  
pp. 17550-17558 ◽  
Author(s):  
Zifan Zeng ◽  
Ping Sun ◽  
Jiliang Zhu ◽  
Xiaohong Zhu
Keyword(s):  
Carbon Fiber ◽  
Manganese Oxide ◽  
Specific Capacitance ◽  
Electrochemical Deposition ◽  
High Specific Capacitance ◽  
Deposition Method ◽  
Cathodic Deposition

An Ag-doped MnOx electrode with high specific capacitance of 825 F g−1 has been fabricated by a cathodic deposition method for supercapacitors.

scholarly journals Flexible solid supercapacitor, based on reduction oxidized graphene polymerization (3, 4-ethylenedioxythiophene)

2019 ◽  
Vol 118 ◽  
pp. 01030
Author(s):  
Zhigang Liu ◽  
Dongyun Su ◽  
Jie Ding ◽  
Jun Ma
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Electrochemical Deposition ◽  
Chemical Deposition ◽  
High Specific Capacitance ◽  
Deposition Method ◽  
Electrochemical Tests ◽  
Sem Observation ◽  
Chemical Deposition Method

In this case, RGO (graphene reduced load) aggregates (3, 4-ethylenedioxythiophene) were used to prepare basic films by chemical deposition method. Optimize electrochemical deposition (3, 4-ethylene dioxide) and rGO voltage Windows and electrolytes. SEM observation confirmed that PEDOT/rGO did synthesize the necessary composites. Electrochemical tests showed that the electrochemical performance of PEDOT electrode was improved by adding rGO. The mixed PEDOT/rGO electrode has a high specific capacitance (134 F/g, 0.8 mA/cm2).

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.

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.

Poly(aniline-co-pyrrole)-coated Ni-doped manganese dioxide as electrode materials for supercapacitors

2020 ◽  
Vol 13 (02) ◽  
pp. 2051007
Author(s):  
Jie Dong ◽  
Qinghao Yang ◽  
Qiuli Zhao ◽  
Zhenzhong Hou ◽  
Yue Zhou ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Manganese Dioxide ◽  
Specific Capacitance ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Cycle Stability ◽  
Mass Ratio ◽  
Scan Rate ◽  
Poly Aniline ◽  
Inorganic And Organic

Electrode materials with a high specific capacitance, outstanding reversibility and excellent cycle stability are constantly pursued for supercapacitors. In this paper, we present an approach to improve the electrochemical performance by combining the advantages of both inorganic and organic. Ni-MnO2/PANi-co-PPy composites are synthesized, with the copolymer of aniline/pyrrole being coated on the surface of Ni-doped manganese dioxide nanospheres. The inorganic–organic composite enables a substantial increase in its specific capacitance and cycle stability. When the mass ratio of Ni-MnO2 to aniline and pyrrole mixed monomer is 1:5, the composite delivers high specific capacitance of 445.49[Formula: see text]F/g at a scan rate of 2[Formula: see text]mV/s and excellent cycle stability of 61.65% retention after 5000 cycles. The results indicate that the Ni-MnO2/PANi-co-PPy composites are promising electrode materials for future supercapacitors application.

Modulating the surface states of electric field assembled CuO nanowires by electrochemical deposition method

2009 ◽  
Vol 95 (8) ◽  
pp. 083107 ◽  
Author(s):  
Lixiang Wang ◽  
Gang Cheng ◽  
Xiaohong Jiang ◽  
Shujie Wang ◽  
Xingtang Zhang ◽  
...  
Keyword(s):  
Electric Field ◽  
Electrochemical Deposition ◽  
Surface States ◽  
Deposition Method ◽  
Cuo Nanowires ◽  
Electrochemical Deposition Method
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