A heterojunction of VO(OH)2 nanorods onto hemp stem derived carbon for high voltage (1.5 V) symmetric supercapacitors

2020 ◽  
Vol 4 (10) ◽  
pp. 5102-5113
Author(s):  
Bhumika Tiwari ◽  
Akanksha Joshi ◽  
Mehak Munjal ◽  
Raj Kishore Sharma ◽  
Gurmeet Singh
Keyword(s):  
High Voltage ◽  
Electrode Material ◽  
Composite Electrode ◽  
Negative Potential ◽  
Potential Electrode ◽  
Operating Potential

A heterojunction design of positive and negative potential electrode material in a single composite electrode material resulting in a 1.5 V operating potential.

Pseudocapacitive behaviour of iron oxides supported on carbon nanofibers as a composite electrode material for aqueous-based supercapacitors

2021 ◽  
Vol 42 ◽  
pp. 103052
Author(s):  
Murilo Alexandreli ◽  
Cesar B. Brocchi ◽  
Davi Marcelo Soares ◽  
Willian G. Nunes ◽  
Bruno G. Freitas ◽  
...  
Keyword(s):  
Iron Oxides ◽  
Carbon Nanofibers ◽  
Electrode Material ◽  
Composite Electrode

scholarly journals Air electrode based on poly(3,4-ethylenedioxythiophene) microflower/graphene composite for superior Li–O2batteries with excellent cycle performance

RSC Advances ◽  
2017 ◽  
Vol 7 (89) ◽  
pp. 56752-56759 ◽  
Author(s):  
S. H. Yoon ◽  
Y. J. Park
Keyword(s):  
Electrochemical Performance ◽  
Electrode Material ◽  
Cycle Performance ◽  
Air Electrode ◽  
Graphene Composite ◽  
Potential Electrode ◽  
Enhanced Electrochemical Performance

A PEDOT microflower/graphene composite was introduced as a potential electrode material for Li–O2batteries with enhanced electrochemical performance.

scholarly journals Formation of Hierarchical 2D-Mos2 Nanostructures over Carbon Fabric as Binder Free Electrode Material for Supercapacitor Applications

2018 ◽  
Vol 15 ◽  
pp. 5943-5949
Author(s):  
Selvaraj Shanthi ◽  
Yasuhiro Hayakawa ◽  
Suru Ponnusamy ◽  
Hiroya Ikeda ◽  
Chellamuthu Muthamizhchelvan
Keyword(s):  
Specific Capacitance ◽  
Electrode Material ◽  
Electrode Materials ◽  
Cyclic Behavior ◽  
Carbon Fabric ◽  
Low Thermal Expansion ◽  
Potential Electrode ◽  
Hydrothermal Approach ◽  
Xrd Patterns ◽  
New Generation

Carbon fabrics are the new generation promising electrode materials for super capacitors owing to their high electrical conductivity, high chemical stability and low thermal expansion. In this work, 2D-MoS2 nanostructures have been successfully deposited over the commercially available carbon fabric by hydrothermal approach, using silicontungstic acid as an additive. MoS2 nanostructures – carbon fabric was broadly characterized using XRD, FESEM and Raman Spectroscopy. XRD patterns indicated that the fabricated MoS2 nanoparticles can be indexed to hexagonal (2H) and rhombohedral (3R) phases. FESEM images revealed the formation of hierarchical 2D MoS2 nanosheets arranged in a nanosphere like morphology over the carbon fabric. The electrochemical behavior of the MoS2 - carbon fabric and commercially available bare carbon fabric were studied using cyclic voltammetry analysis with different scan rates. The MoS2-carbon fabric exhibited an excellent electrochemical performance with a specific capacitance of 441 F/g at a scan rate of 10mV/s. The good cyclic behavior with symmetric charging/discharging curves, constant specific capacitance for longer scan rates, suggesting that the MoS2- carbon fabric electrode is a potential electrode material for high power applications.

Core–Shell Structured NiCo2O4@ZnCo2O4 Nanomaterials with High Energy Density for Hybrid Capacitors

2021 ◽  
Vol 16 (7) ◽  
pp. 1134-1142
Author(s):  
Wenduo Yang ◽  
Jun Xiang ◽  
Sroeurb Loy ◽  
Nan Bu ◽  
Duo Cui ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrode Material ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Structural Characteristics ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Shell Composite ◽  
Hybrid Capacitors

NiCo2O4 as an electrode material for supercapacitors (SCs) has been studied by a host of researchers due to its unique structural characteristics and high capacitance. However, its performance has not yet reached the level of practical applications.it is an effective strategy to synthesize composite electrode materials for tackling the problem. Herein, NiCo2O4@ZnCo2O4 as a novel core–shell composite electrode material has been fabricated through a two-step simple hydrothermal method. The as-prepared sample can be directly used as cathode material of a supercapacitor, and its specific capacitance is 463.1 C/g at 1 A/g. An assembled capacitor has an energy density of 77 Wh·kg−1 at 2700 W·kg−1, and after 8000 cycles, 88% of the initial capacity remains.

Durable porous carbon/ZnMn2O4 composite electrode material for supercapacitor

2019 ◽  
Vol 803 ◽  
pp. 424-433 ◽  
Author(s):  
Cheng-Kim Sim ◽  
S.R. Majid ◽  
Noor Zalina Mahmood
Keyword(s):  
Electrode Material ◽  
Porous Carbon ◽  
Composite Electrode

MnO2 nanosheet-coated Co3O4 complex for 1.4 V extra-high voltage supercapacitors electrode material

2019 ◽  
Vol 431 ◽  
pp. 48-54 ◽  
Author(s):  
Gang Liu ◽  
Chenxia Kang ◽  
Ju Fang ◽  
Likang Fu ◽  
Houhuang Zhou ◽  
...  
Keyword(s):  
High Voltage ◽  
Electrode Material ◽  
Mno2 Nanosheet ◽  
Extra High Voltage
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