A super-thermostable, flexible supercapacitor for ultralight and high performance devices

2020 ◽  
Vol 8 (2) ◽  
pp. 532-542 ◽  
Author(s):  
Dong Won Kim ◽  
Sung Mi Jung ◽  
Hyun Young Jung
Keyword(s):  
High Temperature ◽  
Energy Density ◽  
Polymer Composite ◽  
High Performance ◽  
Composite Electrolytes ◽  
Graphene Aerogel ◽  
High Capacitance ◽  
Flexible Supercapacitor ◽  
Flexible Supercapacitors ◽  
High Temperature Operation

High-temperature operation and flexible supercapacitors are designed from graphene aerogel electrodes and IL-FSN based polymer composite electrolytes, achieving a high capacitance of 1007 F g−1 and an energy density of 1134 Wh kg−1 at 200 °C.

Nacre-inspired composite films with high mechanical strength constructed from MXenes and wood-inspired hydrothermal cellulose-based nanofibers for high performance flexible supercapacitors

Nanoscale ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 3079-3091
Author(s):  
Libo Chang ◽  
Zhiyuan Peng ◽  
Tong Zhang ◽  
Chuying Yu ◽  
Wenbin Zhong
Keyword(s):  
Mechanical Strength ◽  
High Performance ◽  
Composite Films ◽  
High Mechanical Strength ◽  
Flexible Supercapacitor ◽  
Flexible Supercapacitors

Wood-inspired HCNF@Lig introduced into MXenes constructing a nacre-like material with high mechanical strength and excellent flexibility used as a flexible supercapacitor.

scholarly journals A Critical Review for an Accurate Electrochemical Stability Window Measurement of Solid Polymer and Composite Electrolytes

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3840
Author(s):  
Adrien Méry ◽  
Steeve Rousselot ◽  
David Lepage ◽  
Mickaël Dollé
Keyword(s):  
Ionic Conductivity ◽  
Energy Density ◽  
High Performance ◽  
Mechanical Stability ◽  
Electrochemical Stability ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Composite Electrolytes ◽  
Battery System ◽  
Electrochemical Stability Window

All-solid-state lithium batteries (ASSLB) are very promising for the future development of next generation lithium battery systems due to their increased energy density and improved safety. ASSLB employing Solid Polymer Electrolytes (SPE) and Solid Composite Electrolytes (SCE) in particular have attracted significant attention. Among the several expected requirements for a battery system (high ionic conductivity, safety, mechanical stability), increasing the energy density and the cycle life relies on the electrochemical stability window of the SPE or SCE. Most published works target the importance of ionic conductivity (undoubtedly a crucial parameter) and often identify the Electrochemical Stability Window (ESW) of the electrolyte as a secondary parameter. In this review, we first present a summary of recent publications on SPE and SCE with a particular focus on the analysis of their electrochemical stability. The goal of the second part is to propose a review of optimized and improved electrochemical methods, leading to a better understanding and a better evaluation of the ESW of the SPE and the SCE which is, once again, a critical parameter for high stability and high performance ASSLB applications.

MoS2/Cellulose Paper Coupled with SnS2 Quantum Dots as 2D/0D Electrode for High Performance Flexible Supercapacitor

2021 ◽  
Author(s):  
Enaganti Prasanth Kumar ◽  
Venkatarao Selamneni ◽  
Parikshit Sahatiya ◽  
Sanket Goel
Keyword(s):  
Quantum Dots ◽  
High Performance ◽  
Functional Nanomaterials ◽  
Hybrid Functional ◽  
Cellulose Paper ◽  
Flexible Supercapacitor ◽  
Flexible Supercapacitors ◽  
Porous Substrates

The effective incorporation of novel and highly conductive hybrid functional nanomaterials onto flexible and porous substrates are extremely desirable to develop flexible supercapacitors. Even though there are reports on the...

Molecular chain bonding synthesis of nanoporous, flexible and conductive polymer composite with outstanding performance for supercapacitors

2016 ◽  
Vol 4 (26) ◽  
pp. 10091-10097 ◽  
Author(s):  
Yangfan Zhang ◽  
Yunhong Tan ◽  
Kang Yang ◽  
Zexiong Wu ◽  
Zishou Zhang ◽  
...  
Keyword(s):  
Polymer Composite ◽  
High Performance ◽  
Conductive Polymer ◽  
Molecular Chain ◽  
Conductive Polymer Composite ◽  
Flexible Supercapacitors ◽  
First Time

Molecular chain bonding is, for the first time, developed to synthesize a nanoporous, flexible and conductive polymer composite for high-performance flexible supercapacitors.

An all-solid-state asymmetric device based on a polyaniline hydrogel for a high energy flexible supercapacitor

2017 ◽  
Vol 41 (1) ◽  
pp. 237-244 ◽  
Author(s):  
Hamid Heydari ◽  
Mohammad B. Gholivand
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
Gel Electrolyte ◽  
Asymmetric Supercapacitor ◽  
Flexible Supercapacitor ◽  
Asymmetric Device

3D porous PANI hydrogel and a gel electrolyte were used to fabricate a high performance, all-solid-state, flexible asymmetric supercapacitor with an energy density of up to 6.16 mW h cm−3.

On the Integration of Hot Foil Bearings Into Gas Turbine Engines: Theoretical Treatment

2019 ◽  
Author(s):  
Hooshang Heshmat ◽  
James F. Walton
Keyword(s):  
High Temperature ◽  
System Dynamics ◽  
High Performance ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Structural Stiffness ◽  
Foil Bearings ◽  
Foil Bearing ◽  
High Temperature Operation ◽  
Bearing System

Abstract To achieve high power density Gas Turbine Engines (GTEs), R&D efforts have strived to develop machines that spin faster and run hotter. One method to achieve that goal is to use high temperature capable foil bearings. In order to successfully integrate these advanced foil bearings into GTE systems, a theoretical understanding of both bearing and rotor system integration is essential. Without a fundamental understanding and sound theoretical modeling of the foil bearing coupled with the rotating system such an approach would prove application efforts fruitless. It is hoped that the information provided in this paper will open up opportunistic doors to designs presently thought to be impossible. In this paper an attempt is made to describe how an advanced foil bearing is modeled for extreme high temperature operation in high performance turbomachinery including GTEs, Supercritical CO2 turbine generators and others. The authors present the advances in foil bearing capabilities that were crucial to achieving high temperature operation. Achieving high performance in a compliant foil bearing under the wide extremes of operating temperatures, pressures and speeds, requires a bearing system design approach that accounts for the highly interrelated compliant surface foil bearing elements such as: the structural stiffness and frictional characteristics of the underlying compliant support structure across the operating temperature and pressure spectrum; and the coupled interaction of the structural elements with the hydrodynamic pressure generation. This coupled elasto-hydrodynamic-Finite Element highly non-linear iterative methodology will be used by the authors to present a series of foil bearing design evaluations analyzing and modeling the foil bearing under extreme conditions. The complexity of the problem of achieving foil bearing system operation beyond 870°C (1600°F) requires as a prerequisite the attention to the tribological details of the foil bearing. For example, it is necessary to establish how both the frictional and viscous damping coefficient elements as well as the structural and hydrodynamic stiffness are to be combined. By combining these characteristics the influence of frictional coefficients of the elastic and an-elastic materials on bearing structural stiffness and hence the bearing effective coupled elasto-hydrodynamic stiffness coefficients will be shown. Given that the bearing dynamic parameters — stiffness and damping coefficients — play a major role in the control of system dynamics, the design approach to successfully integrate compliant foil bearings into complex rotating machinery systems operating in extreme environments is explored by investigating the effects of these types of conditions on rotor-bearing system dynamics. The proposed rotor/bearing model is presented to describe how system dynamics and bearing structural properties and operating characteristics are inextricably linked together in a manner that results in a series separate but intertwined iterative solutions. Finally, the advanced foil bearing modeling and formulation in connection with resulting rotor dynamics of the system will be carried out for an experimental GTE simulator test rig. The analytical results will be compared with the experiments as presented previously to demonstrate the effectiveness of the developed method in a real world application [1].

Biotemplated hierarchical polyaniline composite electrodes with high performance for flexible supercapacitors

2016 ◽  
Vol 4 (23) ◽  
pp. 9133-9145 ◽  
Author(s):  
Cheng-Ming Chang ◽  
Zh-Hao Hu ◽  
Ting-Yin Lee ◽  
Yi-An Huang ◽  
Wei-Fu Ji ◽  
...  
Keyword(s):  
Natural Resources ◽  
High Performance ◽  
Composite Electrodes ◽  
Replica Technique ◽  
Electrochemical Capacitance ◽  
Flexible Supercapacitor ◽  
Flexible Supercapacitors

A bioinspired structure flexible supercapacitor device with excellent electrochemical capacitance directly through a replica technique using natural resources has been developed.

Graphene nanoribbon wrapped cobalt manganite nanocubes for high performance all-solid-state flexible supercapacitors

2015 ◽  
Vol 3 (18) ◽  
pp. 9925-9931 ◽  
Author(s):  
Sanjeev K. Ujjain ◽  
Preety Ahuja ◽  
Raj K. Sharma
Keyword(s):  
Solid State ◽  
High Performance ◽  
Graphene Nanoribbon ◽  
Hydrothermal Processing ◽  
Flexible Supercapacitor ◽  
Flexible Supercapacitors ◽  
Cobalt Manganite

Graphene nanoribbon (GNR) wrapped nanocubes of cobalt manganite (CoMn2O4) synthesized by hydrothermal processing formed high performance flexible supercapacitor.

Elastomeric Seals for the Army's Lance Missile

1966 ◽  
Vol 39 (4) ◽  
pp. 1233-1246
Author(s):  
S. P. McManus ◽  
S. Pikkn
Keyword(s):  
High Temperature ◽  
Exposure Time ◽  
Chemical Industry ◽  
High Performance ◽  
Propulsion System ◽  
Elastomeric Seals ◽  
Chlorobutyl Rubber ◽  
High Temperature Operation

Abstract The LANCE propulsion system requires dynamic and static seals which must operate under extremely severe conditions for short periods. By analysis and tests it has been found that resin-cured chlorobutyl rubber meets the requirements for low and high temperature operation and retains its properties when exposed to the LANCE propellants for short periods. The chlorobutyl rubber, however, is not a panacea. Its properties become increasingly poorer as exposure time increases. Since the need for high performance, versatile systems should continue indefinitely, it is hoped that research can produce elastomers to meet the growing need for unusual environments such as are described here. For successful accomplishment of this task, the rubber and chemical industry will have to meet the challenge to reach this goal.

Sign in / Sign up

Export Citation Format

Share Document