Carbon nanotubes@metal–organic frameworks as Mn-based symmetrical supercapacitor electrodes for enhanced charge storage

RSC Advances ◽  
2015 ◽  
Vol 5 (72) ◽  
pp. 58100-58106 ◽  
Author(s):  
Yidong Zhang ◽  
Baoping Lin ◽  
Ying Sun ◽  
Xueqin Zhang ◽  
Hong Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hybrid Material ◽  
Electrode Material ◽  
Metal Organic Frameworks ◽  
Charge Storage ◽  
Supercapacitor Electrode ◽  
Metal Organic

A hybrid material of carbon nanotubes (CNTs) and Mn-based metal organic frameworks (Mn-MOF) was synthesized and used as a Mn-based supercapacitor electrode material.

Application of Ni/Co-based metal–organic frameworks (MOFs) as an advanced electrode material for supercapacitors

2016 ◽  
Vol 40 (11) ◽  
pp. 9187-9193 ◽  
Author(s):  
Habib Gholipour-Ranjbar ◽  
Mohammad Soleimani ◽  
Hamid Reza Naderi
Keyword(s):  
Specific Capacitance ◽  
Electrode Material ◽  
Metal Organic Frameworks ◽  
High Specific Capacitance ◽  
Cycling Performance ◽  
Supercapacitor Electrode ◽  
Metal Organic

A Ni/Co–MOF-based supercapacitor electrode exhibited high specific capacitance, and good rate and cycling performance.

Metal–organic frameworks: a new promising class of materials for a high performance supercapacitor electrode

2014 ◽  
Vol 2 (39) ◽  
pp. 16640-16644 ◽  
Author(s):  
Jie Yang ◽  
Peixun Xiong ◽  
Cheng Zheng ◽  
Heyuan Qiu ◽  
Mingdeng Wei
Keyword(s):  
Specific Capacitance ◽  
Layered Structure ◽  
Electrode Material ◽  
High Performance ◽  
Metal Organic Frameworks ◽  
Supercapacitor Electrode ◽  
Metal Organic

A layered structure Ni-based MOF was firstly used as the electrode material for a supercapacitor and exhibited a large specific capacitance of 1127 F g−1 at 0.5 A g−1.

scholarly journals Fabrication, characterization, and application of polyaniline/Ni(II) metal-organic frameworks nanocomposite as a supercapacitor electrode material

2021 ◽  
Author(s):  
Zeinab Ansari-Asl ◽  
Amin Shiralizadeh Dezfuli
Keyword(s):  
Specific Capacitance ◽  
Electrode Material ◽  
Electrochemical Impedance ◽  
Synergistic Effects ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
Supercapacitor Electrode ◽  
Uniform Dispersion ◽  
Metal Organic ◽  
Charge Discharge

Abstract Metal-organic frameworks (MOFs), owing to their tunable porosity, high surface area, and diversity were investigated as potential supercapacitor materials. PANI/Ni-MOF, a nanocomposite of Ni-MOF and polyaniline (PANI), was fabricated by in situ solvothermal synthesis of Ni-MOF in the presence of the as-obtained PANI. The prepared products were studied using FT-IR, PXRD, SEM, and EDS-mapping techniques. EDS-mapping results exhibited the uniform dispersion of Ni-MOF into the polymeric matrix. Electrochemical properties of the pure Ni-MOF and PANI/Ni-MOF were investigated through CV (cyclic voltammetry), GCD (galvanostatic charge/discharge), and EIS (electrochemical impedance spectroscopy) methods in a three-electrode system. The as-fabricated PANI/Ni-MOF nanocomposite exhibited outstanding electrochemical performance owing to the synergistic effects of PANI with proper conductivity and the Ni-MOF’s porous structure, obtaining an excellent specific capacitance of 601 F g− 1 at 1 A g− 1. Additionally, this supercapacitor material showed a remarkable cycle life after 5000 charge/discharge test, 99.5 % retention of its specific capacitance. These excellent properties would make PANI/Ni-MOF nanocomposite as a proper candidate for supercapacitor electrode material. .

Fabrication and charge storage capacitance of PPY/TiO2/PPY jacket nanotube array

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Yibing Xie
Keyword(s):  
Density Of States ◽  
Electrode Material ◽  
Acidic Solution ◽  
Tube Wall ◽  
Internal Surface ◽  
Experimental Result ◽  
Charge Storage ◽  
Current Response ◽  
Supercapacitor Electrode ◽  
Nanotube Array

AbstractA PPY/TiO2/PPY jacket nanotube array was fabricated by coating PPY layer on the external and internal surface of a tube wall-separated TiO2 nanotube array. It shows coaxial triple-walled nanotube structure with two PPY nanotube layers sandwiching one TiO2 nanotube layer. PPY/TiO2/PPY reveals much higher current response than TiO2. The theoretical calculation indicates PPY/TiO2/PPY reveals higher density of states and lower band gap, accordingly presenting higher conductivity and electroactivity, which is consistent with the experimental result of a higher current response. The electroactivity is highly enhanced in H2SO4 rather than Na2SO4 electrolyte due to feasible pronation process of PPY in an acidic solution. PPY/TiO2/PPY could conduct the redox reaction in H2SO4 electrolyte which involves the reversible protonation/deprotonation and HSO4− doping/dedoping process and accordingly contributes to Faradaic pseudocapacitance. The specific capacitance is highly enhanced from 1.7 mF cm−2 of TiO2 to 123.4 mF cm−2 of PPY/TiO2/PPY at 0.1 mA cm−2 in H2SO4 electrolyte. The capacitance also declines from 123.4 to 31.7 mF cm−2 when the current density increases from 0.1 to 1 mA cm−2, presenting the rate capacitance retention of 26.7% due to the semiconductivity of TiO2. A PPY/TiO2/PPY jacket nanotube with high charge storage capacitance is regarded as a promising supercapacitor electrode material.

In-situ growth of ZIF-8 on gold nanoparticles/magnetic carbon nanotubes for electrochemical detection of bisphenol A

2021 ◽  
Author(s):  
Hexiang Li ◽  
Fawei Zhu ◽  
Jun Xiang ◽  
Fangbin Wang ◽  
Qi Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Bisphenol A ◽  
Electrochemical Detection ◽  
Metal Organic Frameworks ◽  
In Situ Growth ◽  
Metal Organic ◽  
Magnetic Carbon ◽  
Magnetic Carbon Nanotubes

We herein report a facile and scalable strategy for fabrication of the metal organic frameworks (MOFs) based composite by in-situ growing ZIF-8 on the gold nanoparticles (AuNPs) loaded magnetic carbon...

Ni/Co-based metal-organic frameworks as electrode material for high performance supercapacitors

2019 ◽  
Vol 30 (3) ◽  
pp. 605-609 ◽  
Author(s):  
Shaofei Zhao ◽  
Lizhen Zeng ◽  
Gao Cheng ◽  
Lin Yu ◽  
Huaqiang Zeng
Keyword(s):  
Electrode Material ◽  
High Performance ◽  
Metal Organic Frameworks ◽  
Metal Organic
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