scholarly journals Post-Synthetic Modification of Covalent Organic Frameworks via in Situ Polymerization of Aniline for Enhanced Capacitive Energy Storage

2020 ◽  
Author(s):  
Tapas Dutta ◽  
Abhijit Patra
Keyword(s):  
Energy Storage ◽  
In Situ Polymerization ◽  
Light Emitting Diode ◽  
Green Light ◽  
High Energy ◽  
High Energy Density ◽  
Covalent Organic Frameworks ◽  
Capacitive Energy Storage ◽  
Layered Architecture

<div> <p>Covalent organic frameworks (COFs) with layered architecture with open nanochannels and high specific surface areas are promising candidates for energy storage. However, the low electrical conductivity of two-dimensional COFs often limits their scope in energy storage applications. The conductivity of COFs can be enhanced through post-synthetic modification with conducting polymers. Herein, we developed polyaniline (PANI) modified triazine-based COFs via <i>in situ</i> polymerization of aniline with the porous frameworks. The composite materials showed high conductivity of 1.4-1.9 x 10<sup>-2</sup> S cm<sup>-1</sup> at room temperature with 10-fold enhancement in specific capacitance than the pristine frameworks. The fabricated supercapacitor exhibited a high energy density of 24.4 W h kg<sup>-1</sup> and a power density of 200 W kg<sup>-1</sup> at 0.5 A g<sup>-1 </sup>current density. Moreover, the device fabricated using the conducting polymer-triazine COF composite can light up a green light-emitting diode for 1 min after being charged for 10 s.</p></div>

scholarly journals Post-Synthetic Modification of Covalent Organic Frameworks via in Situ Polymerization of Aniline for Enhanced Capacitive Energy Storage

2020 ◽  
Author(s):  
Tapas Dutta ◽  
Abhijit Patra
Keyword(s):  
Energy Storage ◽  
In Situ Polymerization ◽  
Light Emitting Diode ◽  
Green Light ◽  
High Energy ◽  
High Energy Density ◽  
Covalent Organic Frameworks ◽  
Capacitive Energy Storage ◽  
Layered Architecture

<div> <p>Covalent organic frameworks (COFs) with layered architecture with open nanochannels and high specific surface areas are promising candidates for energy storage. However, the low electrical conductivity of two-dimensional COFs often limits their scope in energy storage applications. The conductivity of COFs can be enhanced through post-synthetic modification with conducting polymers. Herein, we developed polyaniline (PANI) modified triazine-based COFs via <i>in situ</i> polymerization of aniline with the porous frameworks. The composite materials showed high conductivity of 1.4-1.9 x 10<sup>-2</sup> S cm<sup>-1</sup> at room temperature with 10-fold enhancement in specific capacitance than the pristine frameworks. The fabricated supercapacitor exhibited a high energy density of 24.4 W h kg<sup>-1</sup> and a power density of 200 W kg<sup>-1</sup> at 0.5 A g<sup>-1 </sup>current density. Moreover, the device fabricated using the conducting polymer-triazine COF composite can light up a green light-emitting diode for 1 min after being charged for 10 s.</p></div>

Materials Research for High Energy Density Electrochemical Capacitor

2008 ◽  
Vol 1100 ◽  
Author(s):  
Andrew F. Burke
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Dielectric Materials ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Capacitive Energy Storage ◽  
High Electronic Conductivity ◽  
Materials Research ◽  
Power Capability

AbstractIn April 2007, the Office of Basic Energy Science, United States Department of Energy organized and conducted a Basic Energy Sciences Workshop for Electrical Energy Storage at which basic research needs for capacitive energy storage were considered in detail. This paper is intended to highlight the materials research findings/needs of the workshop and to relate them to the development of high energy density capacitors that can have an energy density approaching that of lead acid batteries, a power density greater than that of lithium ion batteries, and cycle life approaching that of carbon/carbon double-layer capacitors. Capacitors inherently have long cycle life and high power capability so the key issue is how to increase their energy density with minimum sacrifice of their inherent cycle life and power advantages. This requires the development of electrode charge storage materials with an effective high specific capacitance (F/g) and high electronic conductivity. The most promising electrode materials appear to be optimized activated carbons, graphitic carbons, nanotube carbons, and metal oxides. Cells can be assembled that utilize one of these materials in the one electrode and another of the material in the other electrode. Such hybrid cells can operate at 3-4V using organic electrolytes and potentially can have energy densities of 15-25 Wh/kg. Initial research is also underway on solid-state, high energy density devices utilizing high dielectric materials (K>15000) which would operate at very high cell voltage. If such dielectric materials can be developed, these devices may have energy densities approaching those of lithium batteries.

Integrated cathode and solid electrolyte via in situ polymerization with significantly reduced interface resistance

2021 ◽  
Author(s):  
Jialiang Yuan ◽  
Ran Dong ◽  
Yuan Li ◽  
Yang Liu ◽  
Zhuo Zheng ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Solid Electrolyte ◽  
In Situ Polymerization ◽  
High Energy ◽  
High Energy Density ◽  
Interface Resistance ◽  
Simple Strategy ◽  
Solid State Batteries

Reducing the interface resistance of solid electrolyte and electrode is critical for developing high-energy density solid-state batteries. In the present study, a simple strategy that designing integrated cathode and solide...

Bimetal–organic framework assisted polymerization of pyrrole involving air oxidant to prepare composite electrodes for portable energy storage

2017 ◽  
Vol 5 (45) ◽  
pp. 23744-23752 ◽  
Author(s):  
Yang Jiao ◽  
Gang Chen ◽  
Dahong Chen ◽  
Jian Pei ◽  
Yongyuan Hu
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Power Density ◽  
High Energy ◽  
High Energy Density ◽  
Composite Electrodes ◽  
Organic Framework

Heterocyclic pyrrole molecules arein situpolymerized in the absence of an oxidant between the layers of bimetal–organic frameworks, resulting in high energy density and power density simultaneously.

Synthesis of Sn–Co@PMMA nanowire arrays by electrodeposition and in situ polymerization as a high performance lithium-ion battery anode

RSC Advances ◽  
2015 ◽  
Vol 5 (116) ◽  
pp. 95488-95494 ◽  
Author(s):  
Haowen Meng ◽  
Hongyan Yang ◽  
Xiaohui Yu ◽  
Peng Dou ◽  
Daqian Ma ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
In Situ Polymerization ◽  
Lithium Ion ◽  
High Energy ◽  
Nanowire Arrays ◽  
High Energy Density ◽  
Battery Anode

Transition metals have attracted much attention due to their high energy density in lithium-ion batteries (LIBs).

Status and Prospect of In Situ and Operando Characterization of All Solid-State Batteries

2021 ◽  
Author(s):  
Marm B Dixit ◽  
Jun-Sang Park ◽  
Peter Kenesei ◽  
Jonathan Almer ◽  
Kelsey Bridget Hatzell
Keyword(s):  
Energy Storage ◽  
Storage Systems ◽  
High Energy ◽  
High Energy Density ◽  
Transportation Sector ◽  
Solid State Batteries ◽  
All Solid State Batteries ◽  
Storage Technologies

Electrification of the transportation sector relies on radical re-imagining of energy storage technologies to provide affordable, high energy density, durable and safe systems. Next generation energy storage systems will need...

Enhanced Capacitive Properties of Manganese Dioxide Nanowires Coating with Polyaniline by in situ Polymerization

2014 ◽  
Vol 1659 ◽  
pp. 163-168
Author(s):  
Lihao Wu ◽  
Yingzhi Li ◽  
Pingping Yu ◽  
Qinghua Zhang
Keyword(s):  
Manganese Dioxide ◽  
Transition Metal Oxides ◽  
Manganese Oxides ◽  
In Situ Polymerization ◽  
High Energy ◽  
High Energy Density ◽  
Supercapacitor Electrode ◽  
Capacitive Performance ◽  
Capacitive Properties

ABSTRACTAmong the transition metal oxides, manganese oxides have been widely studied for electrochemical capacitors and batteries, because of their high energy density, low cost, natural abundance and environmentally friendliness. However, the poor electrical conductivity of manganese dioxide (MnO2) limits its capacitive response. Polyaniline becomes a unique and promising conducting polymer with a great potential application in supercapacitors due to easy synthesis and good conductivity of the conducting material. Combine the two properties can prepare nanocomposite materials in order to improve the conductivity and capacitive performance of the MnO2. MnO2 coated with polyaniline as the coaxial nanowires were prepared in this report. The polyaniline was synthesized via in situ polymerization and we got a controllable thin coating on the well-dispersed MnO2 nanowires. This hybrid nanostructure enhances the conductivity and capacitive performance of the supercapacitor electrode. The specific capacitance of MnO2/PANI composites is as high as 426 F g-1 at 1 A g-1, which is twice much higher than pure MnO2 (188 F g-1) .

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