Redox-conducting polymers based on metal-salen complexes for energy storage applications

2020 ◽  
Vol 92 (8) ◽  
pp. 1239-1258 ◽  
Author(s):  
Irina A. Chepurnaya ◽  
Mikhail P. Karushev ◽  
Elena V. Alekseeva ◽  
Daniil A. Lukyanov ◽  
Oleg V. Levin
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Lithium Ion ◽  
Modified Electrodes ◽  
State University ◽  
Structure Property ◽  
Related Data ◽  
Structure Property Relationships ◽  
Collaborative Studies ◽  
World Demand

AbstractMetal-salen polymers are electrochemically active metallopolymers functionalized with multiple redox centers, with a potential for high performance in various fields such as heterogeneous catalysis, chemical sensors, energy conversion, saving, and storage. In light of the growing world demand for the development of superior energy storage systems, the prospects of employing these polymers for advancing the performance of supercapacitors and lithium-ion batteries are particularly interesting. This article provides a general overview of the results of investigating key structure-property relationships of metal-salen polymers and using them to design polymer-modified electrodes with improved energy storage characteristics. The results of independent and collaborative studies conducted by the members of two research groups currently affiliated to the Saint–Petersburg State University and the Ioffe Institute, respectively, along with the related data from other studies are presented in this review.

scholarly journals A germanium and zinc chalcogenide as an anode for a high-capacity and long cycle life lithium battery

RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 35045-35049
Author(s):  
Xu Chen ◽  
Jian Zhou ◽  
Jiarui Li ◽  
Haiyan Luo ◽  
Lin Mei ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Lithium Battery ◽  
Large Scale ◽  
High Capacity ◽  
Lithium Ion ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Long Cycle Life ◽  
Zinc Chalcogenide

High-performance lithium ion batteries are ideal energy storage devices for both grid-scale and large-scale applications.

Porous Activity of Biomass-Activated Carbon Enhanced by Nitrogen-Dopant Towards High-Performance Lithium Ion Hybrid Battery-Supercapacitor

2021 ◽  
Author(s):  
Juan Yu ◽  
Xuyang Wang ◽  
Jiaxin Peng ◽  
Xuefeng Jia ◽  
Linbo Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Storage ◽  
Pore Structure ◽  
High Performance ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Utilization Efficiency ◽  
Energy Storage Devices ◽  
Storage Devices

Abstract Biomass-activated carbon materials are promising electrode materials for lithium-ion hybrid capacitors (LiCs) because of their natural hierarchical pore structure. The efficient utilization of structural pores in activated carbon is very important for their electrochemical performance. Herein, porous biomass-activated carbon (PAC) with large specific surface area was prepared using a one-step activation method with biomass waste as the carbon source and ZnCl2 as the activator. To further improve its pore structure utilization efficiency, the PAC was doped with nitrogen using urea as the nitrogen source. The experimental results confirmed that PAC-1 with a high nitrogen doping level of 4.66% exhibited the most efficient pore utilization among all the samples investigated in this study. PAC-1 exhibited 92% capacity retention after 8000 cycles, showing good cycling stability. Then, to maximize the utilization of high-efficiency energy storage devices, LiNi0.8Co0.15Al0.05O2 (NCA), a promising cathode material for lithium-ion batteries with high specific capacity, was compounded with PAC-1 in different ratios to obtain NCA@PC composites. The NCA@PC-9 composite exhibited excellent capacitance in LiCs and an energy density of 210.9 Wh kg-1 at a high power density of 13.3 kW kg-1. These results provide guidelines for the design of high-performance and low-cost energy storage devices.

Small highly mesoporous silicon nanoparticles for high performance lithium ion based energy storage

2020 ◽  
Vol 400 ◽  
pp. 125958
Author(s):  
Yen-Ju Wu ◽  
Yu-An Chen ◽  
Chun-Lung Huang ◽  
Jing-Ting Su ◽  
Cheng-Ting Hsieh ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Silicon Nanoparticles ◽  
Lithium Ion ◽  
Mesoporous Silicon

Structure–property relationships of high-performance polyethylene fibres

1989 ◽  
Vol 116 (1) ◽  
pp. 179-195 ◽  
Author(s):  
A. Schaper ◽  
D. Zenke ◽  
E. Schulz ◽  
R. Hirte ◽  
M. Taege
Keyword(s):  
High Performance ◽  
Structure Property ◽  
Structure Property Relationships

Recent progress in two-dimensional polymers for energy storage and conversion: design, synthesis, and applications

2018 ◽  
Vol 6 (44) ◽  
pp. 21676-21695 ◽  
Author(s):  
Peitao Xiao ◽  
Yuxi Xu
Keyword(s):  
Energy Storage ◽  
Recent Progress ◽  
Synthetic Methods ◽  
Energy Storage And Conversion ◽  
Two Dimensional ◽  
Structure Property ◽  
Design Synthesis ◽  
Structure Property Relationships

The synthetic methods of two-dimensional polymers and their applications in energy storage and conversion are reviewed with an emphasis on the underlying method–structure–property relationships.

scholarly journals Fused Filament Fabrication of PEEK: A Review of Process-Structure-Property Relationships

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1665 ◽  
Author(s):  
Ali Reza Zanjanijam ◽  
Ian Major ◽  
John G. Lyons ◽  
Ugo Lafont ◽  
Declan M. Devine
Keyword(s):  
High Performance ◽  
Space Station ◽  
Weight Ratio ◽  
High Strength ◽  
Structure Property ◽  
Fused Filament Fabrication ◽  
Space Applications ◽  
Structure Property Relationships ◽  
Complex Design ◽  
Process Structure

Poly (ether ether ketone) (PEEK) is a high-performance engineering thermoplastic polymer with potential for use in a variety of metal replacement applications due to its high strength to weight ratio. This combination of properties makes it an ideal material for use in the production of bespoke replacement parts for out-of-earth manufacturing purposes, in particular on the International Space Station (ISS). Additive manufacturing (AM) may be employed for the production of these parts, as it has enabled new fabrication pathways for articles with complex design considerations. However, AM of PEEK via fused filament fabrication (FFF) encounters significant challenges, mostly stemming from the semi crystalline nature of PEEK and its associated high melting temperature. This makes PEEK highly susceptible to changes in processing conditions which leads to a large reported variation in the literature on the final performance of PEEK. This has limited the adaption of FFF printing of PEEK in space applications where quality assurance and reproducibility are paramount. In recent years, several research studies have examined the effect of printing parameters on the performance of the 3D-printed PEEK parts. The aim of the current review is to provide comprehensive information in relation to the process-structure-property relationships in FFF 3D-printing of PEEK to provide a clear baseline to the research community and assesses its potential for space applications, including out-of-earth manufacturing.

QSPR Prediction of Retention Times of Methylxanthines and Cotinine by Bioplastic Evolution

2018 ◽  
Vol 3 (1) ◽  
pp. 74-87 ◽  
Author(s):  
Francisco Torrens ◽  
Gloria Castellano
Keyword(s):  
High Performance ◽  
Formation Enthalpy ◽  
Fractal Dimensions ◽  
High Performance Liquid Chromatographic ◽  
Chromatographic Retention ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Prediction Of Retention ◽  
Acquired Characters ◽  
Liquid Chromatographic

High-performance liquid-chromatographic retention times of methylxanthines and cotinine in human plasma and urine are modelled by structure–property relationships. Bioplastic evolution is an evolutionary perspective conjugating the effect of acquired characters, and relations that emerge among the principles of evolutionary indeterminacy, morphological determination and natural selection. It is applied to design co-ordination index, which is used to characterize retentions of methylxanthines, etc. Parameters used to calculate co-ordination index are formation enthalpy, molecular weight and surface area. Morphological and co-ordination indices provide strong correlations. Effect of different types of features like thermodynamic, fractal, etc., are analyzed. The molar formation enthalpy, fractal dimensions, etc. distinguished methylxanthines and cotinine in linear fits. Different behaviour depends on number of C+N+O atoms.

scholarly journals Enhanced Roles of Carbon Architectures in High-Performance Lithium-Ion Batteries

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Lu Wang ◽  
Junwei Han ◽  
Debin Kong ◽  
Ying Tao ◽  
Quan-Hong Yang
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
High Mass

Abstract Lithium-ion batteries (LIBs), which are high-energy-density and low-safety-risk secondary batteries, are underpinned to the rise in electrochemical energy storage devices that satisfy the urgent demands of the global energy storage market. With the aim of achieving high energy density and fast-charging performance, the exploitation of simple and low-cost approaches for the production of high capacity, high density, high mass loading, and kinetically ion-accessible electrodes that maximize charge storage and transport in LIBs, is a critical need. Toward the construction of high-performance electrodes, carbons are promisingly used in the enhanced roles of active materials, electrochemical reaction frameworks for high-capacity noncarbons, and lightweight current collectors. Here, we review recent advances in the carbon engineering of electrodes for excellent electrochemical performance and structural stability, which is enabled by assembled carbon architectures that guarantee sufficient charge delivery and volume fluctuation buffering inside the electrode during cycling. Some specific feasible assembly methods, synergism between structural design components of carbon assemblies, and electrochemical performance enhancement are highlighted. The precise design of carbon cages by the assembly of graphene units is potentially useful for the controlled preparation of high-capacity carbon-caged noncarbon anodes with volumetric capacities over 2100 mAh cm−3. Finally, insights are given on the prospects and challenges for designing carbon architectures for practical LIBs that simultaneously provide high energy densities (both gravimetric and volumetric) and high rate performance.

scholarly journals Physical and Electrochemical Properties of Soluble 3,4-Ethylenedioxythiophene (EDOT)-Based Copolymers Synthesized via Direct (Hetero)Arylation Polymerization

2021 ◽  
Vol 9 ◽  
Author(s):  
Qiang Guo ◽  
Jincheng Zhang ◽  
Xiaoyu Li ◽  
Heqi Gong ◽  
Shuanghong Wu ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Electrochemical Properties ◽  
High Performance ◽  
Molecular Conformation ◽  
Careful Study ◽  
Structure Property ◽  
Organic Electronic Devices ◽  
Molecular Weights ◽  
Structure Property Relationships ◽  
Electronic And Structural Properties

Over the past decades, π-conjugated polymers (CPs) have drawn more and more attention and been essential materials for applications in various organic electronic devices. Thereinto, conjugated polymers based on the 3,4-ethylenedioxythiophene (EDOT) backbone are among the high-performance materials. In order to investigate the structure–property relationships of EDOT-based polymers and further improve their electrochemical properties, a series of organic solvent–soluble EDOT-based alternative copolymers consisting of electron-rich fragments (fluorene P1, carbazole P2, and 3,4-alkoxythiophene P3) or electron-deficient moieties (benzotriazole P4 and thieno[3,4-c]pyrrole-4,6-dione P5) were synthesized via direct C–H (hetero)arylation polymerization (DHAP) in moderate to excellent yields (60–98%) with medium to high molecular weights (Mn = 3,100–94,000 Da). Owing to their various electronic and structural properties, different absorption spectra (λmax = 476, 380, 558, 563, and 603 nm) as well as different specific capacitances of 70, 68, 75, 51, and 25 F/g with 19, 10, 21, 26, and 69% of capacity retention after 1,000 cycles were observed for P1–P5, respectively. After careful study through multiple experimental measurements and theoretical calculation, appropriate electronic characteristics, small molecular conformation differences between different oxidative states, and well-ordered molecular stacking could improve the electrochemical performance of CPs.

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