scholarly journals Boosting capacitive deionization performance of commercial carbon fibers cloth via structural regulation based on catalytic‐etching effect

2021 ◽  
Author(s):  
Chunjie Zhang ◽  
Dong Wang ◽  
Zhen Wang ◽  
Guangshuai Zhang ◽  
Zhichao Liu ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Capacitive Deionization ◽  
Commercial Carbon ◽  
Structural Regulation ◽  
Catalytic Etching ◽  
Etching Effect

Interlaminar Fracture in Carbon Fiber/Thermoplastic Composites

1989 ◽  
Vol 170 ◽  
Author(s):  
J. A. Hinkley ◽  
W. D. Bascom ◽  
R. E. Allred
Keyword(s):  
Fracture Toughness ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
High Strain ◽  
Thermoplastic Composites ◽  
Plasma Modification ◽  
Interlaminar Fracture Toughness ◽  
Interlaminar Fracture ◽  
Polyphenylene Oxide ◽  
Commercial Carbon

AbstractThe surfaces of commercial carbon fibers are generally chemically cleaned or oxidized and then coated with an oligomeric sizing to optimize their adhesion to epoxy matrix resins. Evidence from fractography, from embedded fiber testing and from fracture energies suggests that these standard treatments are relatively ineffective for thermoplastic matrices. This evidence is reviewed and model thermoplastic composites (polyphenylene oxide/high strain carbon fibers) are used to demonstrate how differences in adhesion can lead to a two-fold change in interlaminar fracture toughness.The potential for improved adhesion via plasma modification of fiber surfaces is discussed. Finally, a surprising case of fiber-catalyzed resin degradation is described.

scholarly journals Analysis of the Microstructure and Oxidation Behavior of Some Commercial Carbon Fibers

2011 ◽  
Vol 55 (5) ◽  
pp. 819-823 ◽  
Author(s):  
Dae-Ho Kim ◽  
Bo-Hye Kim ◽  
Kap-Seung Yang ◽  
Yun-Hyuk Bang ◽  
Sung-Ryong Kim ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Oxidation Behavior ◽  
Commercial Carbon

scholarly journals Shape-morphing carbon fiber composite using electrochemical actuation

2020 ◽  
Vol 117 (14) ◽  
pp. 7658-7664 ◽  
Author(s):  
Wilhelm Johannisson ◽  
Ross Harnden ◽  
Dan Zenkert ◽  
Göran Lindbergh
Keyword(s):  
Solid State ◽  
Carbon Fibers ◽  
Fiber Composite ◽  
Lithium Ion ◽  
Proof Of Concept ◽  
Carbon Fiber Composite ◽  
Shape Morphing ◽  
Commercial Carbon ◽  
Structural Battery ◽  
Shape Changes

Structures that are capable of changing shape can increase efficiency in many applications, but are often heavy and maintenance intensive. To reduce the mass and mechanical complexity solid-state morphing materials are desirable but are typically nonstructural and problematic to control. Here we present an electrically controlled solid-state morphing composite material that is lightweight and has a stiffness higher than aluminum. It is capable of producing large deformations and holding them with no additional power, albeit at low rates. The material is manufactured from commercial carbon fibers and a structural battery electrolyte, and uses lithium-ion insertion to produce shape changes at low voltages. A proof-of-concept material in a cantilever setup is used to show morphing, and analytical modeling shows good correlation with experimental observations. The concept presented shows considerable promise and paves the way for stiff, solid-state morphing materials.

Maximizing utilization of carbon fibers by bimetallic-catalytic etching and electrochemical modification for difunctional aqueous supercapacitors

2021 ◽  
Author(s):  
Jie Zhang ◽  
Hao Zhang ◽  
Wenli Li ◽  
Guangwen Xu ◽  
Yanbin Cui
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
Wearable Electronics ◽  
Electrochemical Modification ◽  
Carbon Fiber Cloth ◽  
High Utilization ◽  
Catalytic Etching

Carbon fiber cloth with high utilization is urgently needed for portable and wearable electronics. We report herein an interconnected 3D primitive outerlayer by utilizing two disparate catalytic etching behaviors based...

Field emission cathodes using commercial carbon fibers

1982 ◽  
Vol 53 (7) ◽  
pp. 1092-1093 ◽  
Author(s):  
R. Prohaska ◽  
A. Fisher
Keyword(s):  
Field Emission ◽  
Carbon Fibers ◽  
Commercial Carbon ◽  
Field Emission Cathodes

scholarly journals Achieving Porous Carbon Fibers Pretreated With a Swarm of CO2 Micro-Nanobubbles

2021 ◽  
Author(s):  
Joon Hyuk Lee ◽  
Soon Hong Lee ◽  
Dong Hack Suh
Keyword(s):  
Specific Surface ◽  
Carbon Fibers ◽  
Porous Carbon ◽  
Renewable Resources ◽  
Electrode Materials ◽  
Petroleum Pitch ◽  
Upper Limit ◽  
Commercial Carbon ◽  
New Strategy ◽  
Optimized Conditions

Abstract Using petroleum pitch is touted as a sustainable method to fabricate carbon fibers, yet requires further advances in inevitable pore decrease after post-treatment. In an effort to circumvent this upper limit, renewable resources are widely used in the production of commercial carbon fibers. Here we show that dissolved micro-nanobubbles of CO2 in pretreatment may aid in the pore-growth of carbon fibers during activation. The results confirm that micro-nanobubbles increase specific surface (39.21 %) and micropore (16.44 %) areas of a sample. The chemical state of the elements revealed that there were no marked impurities. The observed behaviors can be understood by the following; 1) Partial O atoms released from dissolved micro-nanobubbles may attach to surrounding CO during activation, thereafter results in a higher mass of CO2. 2) Partial O atoms may directly interact with C from unmatured crystallites and form additional CO. We further denote optimized conditions based on the derived mechanism. This study provides a new strategy for the development of highly surface carbonaceous materials, thus possibly stimulating more research on advanced performance adsorbents or electrode materials.

Mechanical Properties of Commercial Carbon Fibers Using a Single Filament Tensile Test

2013 ◽  
Vol 51 (12) ◽  
pp. 913-920 ◽  
Author(s):  
Han-Ik Joh ◽  
Hae Kyung Song ◽  
Ki-Young Kim ◽  
Bon-Cheol Ku ◽  
Phil-Hyun Kang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Test ◽  
Carbon Fibers ◽  
Single Filament ◽  
Commercial Carbon

scholarly journals Exceptional capacitive deionization rate and capacity by block copolymer–based porous carbon fibers

2020 ◽  
Vol 6 (16) ◽  
pp. eaaz0906 ◽  
Author(s):  
Tianyu Liu ◽  
Joel Serrano ◽  
John Elliott ◽  
Xiaozhou Yang ◽  
William Cathcart ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Ion Transport ◽  
Carbon Fibers ◽  
Porous Carbon ◽  
High Capacity ◽  
Accessible Surface Area ◽  
High Rate ◽  
Capacitive Deionization ◽  
Porous Network ◽  
Hierarchical Porous

Capacitive deionization (CDI) is energetically favorable for desalinating low-salinity water. The bottlenecks of current carbon-based CDI materials are their limited desalination capacities and time-consuming cycles, caused by insufficient ion-accessible surfaces and retarded electron/ion transport. Here, we demonstrate porous carbon fibers (PCFs) derived from microphase-separated poly(methyl methacrylate)-block-polyacrylonitrile (PMMA-b-PAN) as an effective CDI material. PCF has abundant and uniform mesopores that are interconnected with micropores. This hierarchical porous structure renders PCF a large ion-accessible surface area and a high desalination capacity. In addition, the continuous carbon fibers and interconnected porous network enable fast electron/ion transport, and hence a high desalination rate. PCF shows desalination capacity of 30 mgNaCl g−1PCF and maximal time-average desalination rate of 38.0 mgNaCl g−1PCF min−1, which are about 3 and 40 times, respectively, those of typical porous carbons. Our work underlines the promise of block copolymer–based PCF for mutually high-capacity and high-rate CDI.

Smart composites materials: A new idea to add gas-sensing properties to commercial carbon-fibers by functionalization with ZnO nanowires

2017 ◽  
Vol 245 ◽  
pp. 166-170 ◽  
Author(s):  
Davide Calestani ◽  
Marco Villani ◽  
Maurizio Culiolo ◽  
Davide Delmonte ◽  
Nicola Coppedè ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Gas Sensing ◽  
Zno Nanowires ◽  
Sensing Properties ◽  
Smart Composites ◽  
Composites Materials ◽  
Gas Sensing Properties ◽  
Commercial Carbon
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