scholarly journals Physical, Chemical, and Electrochemical Properties of Redox-Responsive Polybenzopyrrole as Electrode Material for Faradaic Energy Storage

Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2883 ◽  
Author(s):  
Bushra Begum ◽  
Salma Bilal ◽  
Anwar ul Haq Ali Shah ◽  
Philipp Röse
Keyword(s):  
Energy Storage ◽  
Electrochemical Properties ◽  
Electrode Materials ◽  
Reaction Parameters ◽  
Physical Chemical ◽  
Redox Responsive ◽  
Energy Conversion And Storage ◽  
And Storage ◽  
Polymerization Conditions ◽  
A Current

Polybenzopyrrole (Pbp) is an emerging candidate for electrochemical energy conversion and storage. There is a need to develop synthesis strategies for this class of polymers that can help improve its overall properties and make it as suitable for energy storage applications as other well-studied polymers in this substance class, such as polyaniline and polypyrrole. In this study, by synthesizing Pbp in surfactant-supported acidic medium, we were able to show that the physicochemical and electrochemical properties of Pbp-based electrodes are strongly influenced by the respective polymerization conditions. Through appropriate optimization of various reaction parameters, a significant enhancement of the thermal stability (up to 549.9 °C) and the electrochemical properties could be achieved. A maximum specific capacitance of 166.0 ± 2.0 F g−1 with an excellent cycle stability of 87% after 5000 cycles at a current density of 1 A g−1 was achieved. In addition, a particularly high-power density of 2.75 kW kg−1 was obtained for this polybenzopyrrole, having a gravimetric energy density of 17 Wh kg−1. The results show that polybenzopyrroles are suitable candidates to compete with other conducting polymers as electrode materials for next-generation Faradaic supercapacitors. In addition, the results of the current study can also be easily applied to other systems and used for adaptations or new syntheses of advanced hybrid/composite Pbp-based electrode materials.

scholarly journals Applications of 2D MXenes for Electrochemical Energy Conversion and Storage

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8183
Author(s):  
Chenchen Ji ◽  
Haonan Cui ◽  
Hongyu Mi ◽  
Shengchun Yang
Keyword(s):  
Energy Storage ◽  
Energy Conversion ◽  
Electrode Materials ◽  
Special Functions ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Storage Devices ◽  
High Electronic Conductivity ◽  
Energy Conversion And Storage ◽  
And Storage

As newly emerged 2D layered transition metal carbides or carbonitrides, MXenes have attracted growing attention in energy conversion and storage applications due to their exceptional high electronic conductivity, ample functional groups (e.g., -OH, -F, -O), desirable hydrophilicity, and superior dispersibility in aqueous solutions. The significant advantages of MXenes enable them to be intriguing structural units to engineer advanced MXene-based nanocomposites for electrochemical storage devices with remarkable performances. Herein, this review summarizes the current advances of MXene-based materials for energy storage (e.g., supercapacitors, lithium ion batteries, and zinc ion storage devices), in which the fabrication routes and the special functions of MXenes for electrode materials, conductive matrix, surface modification, heteroatom doping, crumpling, and protective layer to prevent dendrite growth are highlighted. Additionally, given that MXene are versatile for self-assembling into specific configuration with geometric flexibility, great efforts about methodologies (e.g., vacuum filtration, mask-assisted filtration, screen printing, extrusion printing technique, and directly writing) of patterned MXene-based composite film or MXene-based conductive ink for fabricating more types of energy storage device were also discussed. Finally, the existing challenges and prospects of MXene-based materials and growing trend for further energy storage devices are also presented.

scholarly journals Reversible Energy Storage in Layered Copper-Based Coordination Polymers: Unveiling the Influence of the Ligand's Functional Group on Their Electrochemical Properties

2020 ◽  
Author(s):  
Marco Amores ◽  
Keisuke Wada ◽  
Ken Sakaushi ◽  
Hiroshi Nishihara
Keyword(s):  
Energy Storage ◽  
Electrochemical Properties ◽  
Coordination Polymers ◽  
Electrode Materials ◽  
Ex Situ ◽  
Suitable Model ◽  
Open Structures ◽  
Improved Performance ◽  
Multielectron Transfer ◽  
Structure Properties

Coordination polymers represent a suitable model to study redox mechanisms in materials where both metal cation and ligand undergo electrochemical reactions and are capable to proceed through reversible multielectron-transfer processes with insertion of cation and anion into their open structures. Designing new coordination polymers for electrochemical energy storage with improved performance relays also on the understanding of their structure-properties relationship. Here, we present a family of copper-based coordination polymer with hexafunctionalized benzene ligands forming a kagome-type layered structure, where the in uence of the functional groups in their structure and electrochemical properties is investigated. Their chemical and structural properties have been explored by means of PXRD, and FTIR and Raman spectroscopies, followed by investigation of their electrochemical performance in Li half-cells by CV and galvanostatic cycling techniques. Ex-situ PXRD, Raman, XPS and ToF-SIMS measurements of cycled electrodes have been carried out providing insights into the redox mechanism of these copper-based coordination polymers as positive electrode materials.<br>

Transition-metal-based layered double hydroxides tailored for energy conversion and storage

2018 ◽  
Vol 6 (1) ◽  
pp. 12-29 ◽  
Author(s):  
Rajkumar Patel ◽  
Jung Tae Park ◽  
Madhumita Patel ◽  
Jatis Kumar Dash ◽  
E. Bhoje Gowd ◽  
...  
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
Energy Conversion ◽  
Surface Area ◽  
Layered Double Hydroxides ◽  
Energy Storage Materials ◽  
Storage Materials ◽  
Energy Conversion And Storage ◽  
Double Hydroxides ◽  
And Storage

Transition metal based layered double hydroxides are important energy storage materials. The overall performances of the electrodes are dependent on conductivity, crystallinity, morphology, and surface area.

Multi-compositional hierarchical nanostructured Ni3S2@MoSx/NiO electrodes for enhanced electrocatalytic hydrogen generation and energy storage

2018 ◽  
Vol 6 (41) ◽  
pp. 20491-20499 ◽  
Author(s):  
Kane Jian Hong Lim ◽  
Gamze Yilmaz ◽  
Yee-Fun Lim ◽  
Ghim Wei Ho
Keyword(s):  
Energy Storage ◽  
Energy Conversion ◽  
Hydrogen Generation ◽  
Nanostructured Electrodes ◽  
Energy Conversion And Storage ◽  
One Step ◽  
And Storage

A facile one-step hydrothermal strategy to synthesize multi-compositional hierarchical nanostructured electrodes for energy conversion and storage.

Multifunctional nanostructured electrocatalysts for energy conversion and storage: current status and perspectives

Nanoscale ◽  
2018 ◽  
Vol 10 (24) ◽  
pp. 11241-11280 ◽  
Author(s):  
Srabanti Ghosh ◽  
Rajendra N. Basu
Keyword(s):  
Energy Storage ◽  
Oxygen Reduction Reaction ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Reduction Reaction ◽  
Current Status ◽  
Energy Storage And Conversion ◽  
Energy Conversion And Storage ◽  
And Storage

Multifunctional electrocatalysts for oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) have attracted widespread attention because of their important role in the application of various energy storage and conversion devices, such as fuel cells, metal–air, batteries and water splitting devices.

Carbon Nanomaterials for Applications on Supercapacitors

MRS Advances ◽  
2017 ◽  
Vol 2 (54) ◽  
pp. 3283-3289
Author(s):  
Youning Gong ◽  
Qiang Fu ◽  
Chunxu Pan
Keyword(s):  
Energy Storage ◽  
Carbon Nanomaterials ◽  
Electrode Materials ◽  
Carbon Nanospheres ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
The Past ◽  
Synthetic Routes ◽  
And Storage ◽  
Carbon Based

ABSTRACTSupercapacitor is a newly-developed device for electrochemical energy storage with high power density, long life span, as well as rapid capture and storage of energy. Carbon-based materials, from carbon nanospheres, nanotubes and nanofibers to graphene, are the most commonly used electrode materials for supercapacitors. Our group has engaged in the research of carbon nanomaterials over the past decade. Herein we summarize some typical carbon nanomaterials and their synthetic routes based on our published works, which is expected to provide the theoretical and experimental basis for further applications on carbon-based energy storage devices.

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