High specific capacitance of a 3D-metal–organic framework confined growth in CoMn2O4 nanostars as advanced supercapacitor electrode materials

2021 ◽  
Author(s):  
Reza Abazari ◽  
Soheila Sanati ◽  
Ali Morsali ◽  
Deepak P. Dubal
Keyword(s):  
Fossil Fuels ◽  
Electrode Materials ◽  
Metal Organic Framework ◽  
High Specific Capacitance ◽  
Environmental Concerns ◽  
Supercapacitor Electrode ◽  
Confined Growth ◽  
Metal Organic ◽  
Supercapacitor Electrode Materials ◽  
Energy Shortage

IIn the presence of fossil fuels, several environmental concerns e.g. energy shortage, environmental pollution, and global warming may occur in the present century. In this respect, supercapacitors have been introduced...

Hierarchical nickel/phosphorus/nitrogen/carbon composites templated by one metal–organic framework as highly efficient supercapacitor electrode materials

2019 ◽  
Vol 7 (6) ◽  
pp. 2875-2883 ◽  
Author(s):  
Fan Yu ◽  
Xin Xiong ◽  
Liu-Yin Zhou ◽  
Jia-Luo Li ◽  
Ji-Yuan Liang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Metal Organic Framework ◽  
Electrochemical Energy Storage ◽  
Carbon Composites ◽  
Supercapacitor Electrode ◽  
Metal Organic ◽  
Supercapacitor Electrode Materials

Novel carbon materials containing Ni, P, N and O were fabricated from the sacrificial MOF template, which exhibits high performance in electrochemical energy storage.

scholarly journals Enhanced electrochemical properties of cerium metal–organic framework based composite electrodes for high-performance supercapacitor application

RSC Advances ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 3462-3469 ◽  
Author(s):  
Rajendran Ramachandran ◽  
Wenlu Xuan ◽  
Changhui Zhao ◽  
Xiaohui Leng ◽  
Dazhi Sun ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Metal Organic Framework ◽  
Charge Storage ◽  
Composite Electrodes ◽  
Supercapacitor Electrode ◽  
Supercapacitor Application ◽  
Metal Organic ◽  
Storage Behavior ◽  
Supercapacitor Electrode Materials

The presence of oxygen functional groups in GO enhances the charge storage behavior of Ce-MOF/GO composites for use as supercapacitor electrode materials.

A Facile Synthesis of NiFe2O4 with High Specific Capacitance as Supercapacitor Electrode Material

2018 ◽  
Vol 281 ◽  
pp. 854-858
Author(s):  
Xi Cheng Gao ◽  
Jian Qiang Bi ◽  
Wei Li Wang ◽  
Guo Xun Sun ◽  
Xu Xia Hao ◽  
...  
Keyword(s):  
Particle Size ◽  
Specific Capacitance ◽  
Electrochemical Property ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Constant Current ◽  
X Ray Diffraction ◽  
Supercapacitor Electrode ◽  
Constant Current Charge ◽  
Supercapacitor Electrode Materials

NiFe2O4 powders were synthesized by a facile hydrothermal method at 180°C followed by a thermal treatment at 300°C. The phase composition and morphology were analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results showed that the NiFe2O4 powders were well-crystallized, and they possessed a particle size in the range of 50-100 nm. The electrochemical property was characterized via cyclic voltammetry (CV) and constant current charge-discharge method. Encouragingly, the NiFe2O4 powders had an excellent electrochemical property, whose specific capacitance reached 266.84 F/g at the electric current density of 1 A/g due to the small particle size. Compared with other Fe-based metal compound oxides, NiFe2O4 has a better electrochemical performance, which can be widely used in the supercapacitor electrode materials.

scholarly journals Electrochemical performance of composite electrodes based on rGO, Mn/Cu metal–organic frameworks, and PANI

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Quoc Bao Le ◽  
Thanh-Huong Nguyen ◽  
Haojie Fei ◽  
Constantin Bubulinca ◽  
Lukas Munster ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Metal Organic Frameworks ◽  
Electrochemical Analysis ◽  
Composite Electrodes ◽  
Supercapacitor Electrode ◽  
Pani Composite ◽  
The Matrix ◽  
Metal Organic ◽  
Electrochemical Double Layer ◽  
Supercapacitor Electrode Materials

AbstractBenzendicarboxylic acid (BDC)-based metal–organic frameworks (MOFs) have been widely utilized in various applications, including supercapacitor electrode materials. Manganese and copper have solid diamond frames formed with BDC linkers among transition metals chosen for MOF formation. They have shown the possibility to enlarge capacitance at different combinations of MOFs and polyaniline (PANI). Herein, reduced graphene oxide (rGO) was used as the matrix to fabricate electrochemical double-layer SCs. PANI and Mn/Cu-MOF's effect on the properties of electrode materials was investigated through electrochemical analysis. As a result, the highest specific capacitance of about 276 F/g at a current density of 0.5 A/g was obtained for rGO/Cu-MOF@PANI composite.

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.

Preparation and Electrochemical Analysis of Ni-Based Metal Organic Frameworks Containing Binary Ligands for Capacitor Electrodes

2021 ◽  
Vol 21 (9) ◽  
pp. 4670-4674
Author(s):  
Hye-Jin Oh ◽  
Yongju Jung ◽  
Seok Kim
Keyword(s):  
Electrode Materials ◽  
Metal Organic Frameworks ◽  
Electrochemical Analysis ◽  
Supercapacitor Electrode ◽  
Trimesic Acid ◽  
Surface Areas ◽  
Electrode Cell ◽  
Metal Organic ◽  
Supercapacitor Electrode Materials ◽  
Charge Discharge

As one of the energy storage systems, supercapacitors have quite long charge-discharge cycle life. Among many kinds of electrode materials, metal organic frameworks (MOFs) have unique properties such as high specific surface areas and large pore volume as supercapacitor electrode materials. Nickel-MOFs consist of binary ligand such as 1,3,5-Trimesic acid (H3BTC) and terephthalic acid (TPA) were used as working electrode materials in three electrode cell for capacitor system. When synthesizing MOFs, it is possible to prepare uniform crystals using hydrothermal synthesis. The morphology of composites was analyzed by field emission scanning electron microscopy (FE-SEM). Electrochemical properties were measured by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) in 6M KOH electrolyte.

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