Optimizing the micropore-to-mesopore ratio of carbon-fiber-cloth creates record-high specific capacitance

2020 ◽  
Vol 47 ◽  
pp. 210-216 ◽  
Author(s):  
Ying Zheng ◽  
Ting Deng ◽  
Wei Zhang ◽  
Weitao Zheng
Keyword(s):  
Carbon Fiber ◽  
Specific Capacitance ◽  
High Specific Capacitance ◽  
Carbon Fiber Cloth

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.

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.

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.

scholarly journals A self-boosting microwave plasma strategy tuned by air pressure for the highly efficient and controllable surface modification of carbon

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 9955-9963
Author(s):  
Yanjing Liu ◽  
Jiawei He ◽  
Bing Zhang ◽  
Huacheng Zhu ◽  
Yang Yang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Carbon Fiber ◽  
High Efficiency ◽  
Microwave Plasma ◽  
Air Pressure ◽  
Air Plasma ◽  
Highly Efficient ◽  
Carbon Fiber Cloth

Microwave enabled air plasma was boosted by a carbon fiber cloth (CFC) and used for the high-efficiency surface modification of the CFC, yielding CFCs with tunable contents of oxygen and each O-containing group.

Ni(OH)2/3D-rGO supercapacitor material with high specific capacitance

2021 ◽  
Vol 27 ◽  
pp. 102292
Author(s):  
Wei Zeng ◽  
Qiannan Feng ◽  
Jiongliang Yuan
Keyword(s):  
Specific Capacitance ◽  
High Specific Capacitance
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