Electrochemical and electromechanical properties of carbon black/carbon fiber composite polymer actuator with higher performance than single-walled carbon nanotube polymer actuator

2014 ◽  
Vol 123 ◽  
pp. 340-345 ◽  
Author(s):  
Naohiro Terasawa ◽  
Ichiroh Takeuchi
Keyword(s):  
Carbon Nanotube ◽  
Carbon Fiber ◽  
Carbon Black ◽  
Black Carbon ◽  
Fiber Composite ◽  
Composite Polymer ◽  
Electromechanical Properties ◽  
Carbon Fiber Composite ◽  
Single Walled Carbon Nanotube ◽  
Polymer Actuator

Preparation of the Carbon Nanotube / Carbon Fiber Composite and Application as the Electrode Material of the Electrochemical Super Capacitor

2011 ◽  
Vol 687 ◽  
pp. 158-162 ◽  
Author(s):  
Qi Jiang ◽  
Rong Yang ◽  
Guang Gang Fu ◽  
De Yu Xie ◽  
Bin Huang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Carbon Fiber ◽  
Fiber Composite ◽  
Chemical Vapor ◽  
Electrochemical Performances ◽  
Carbon Fiber Composite ◽  
Super Capacitor ◽  
Current Collection ◽  
Spray Method

Carbon nanotube (CNT) / carbon fiber (CF) composite was prepared by growing CNT in situ on the CF surface with catalytic chemical vapor deposition. The morphology of the obtained composite was characterized by the scanning electron microscopy. The results show that the CNT is trimly and equably grown on the CF surface. The obtained CNT/CF composite is covered with a layer of nickel (Ni) as a current collection on one side of the composite through the spray method. Then, the obtained materials were assembled to electrochemical super capacitors to characterize their electrochemical performances. The results show that the specific capacitance of the composite could be up to 105.4 F•g-1(organic electrolyte), which is much higher than those of the pure CNT and the CF (about 25.0 and 62.2F•g-1, respectively). These experimental results show that CNT grown in situ on the CF surface is a simple and feasible method to enhance the composite electrochemical performances.

scholarly journals Electrochemical fabrication and evaluation of a self-standing carbon nanotube/carbon fiber composite electrode for lithium-ion batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (57) ◽  
pp. 33117-33123 ◽  
Author(s):  
Yi-Hung Liu ◽  
Heng-Han Lin ◽  
Tsung-Yu Tsai ◽  
Chun-Han Hsu
Keyword(s):  
Carbon Nanotube ◽  
Carbon Fiber ◽  
Composite Electrode ◽  
Fiber Composite ◽  
Lithium Ion ◽  
Electrochemical Performances ◽  
Carbon Fiber Composite ◽  
Binder Free ◽  
Electrochemical Fabrication ◽  
Battery Anode

A binder-free CNT/CF composite electrode is developed via electrophoretic deposition, offering favorable electrochemical performances and stability as a self-standing lithium-ion battery anode.

Modeling the Compressive Buckling Strain as a Function of the Nanocomposite Interphase Thickness in a Carbon Nanotube Sheet Wrapped Carbon Fiber Composite

2019 ◽  
Vol 86 (10) ◽  
Author(s):  
Xuemin Wang ◽  
Tingge Xu ◽  
Rui Zhang ◽  
Monica Jung de Andrade ◽  
Pruthul Kokkada ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Polymer Matrix Composites ◽  
Fiber Composite ◽  
Unidirectional Composite ◽  
Interfacial Shear ◽  
Carbon Fiber Composite ◽  
Interphase Region

Polymer matrix composites have high strengths in tension. However, their compressive strengths are much lower than their tensile strengths due to their weak fiber/matrix interfacial shear strengths. We recently developed a new approach to fabricate composites by overwrapping individual carbon fibers or fiber tows with a carbon nanotube sheet and subsequently impregnate them into a matrix to enhance the interfacial shear strengths without degrading the tensile strengths of the carbon fibers. In this study, a theoretical analysis is conducted to identify the appropriate thickness of the nanocomposite interphase region formed by carbon nanotubes embedded in a matrix. Fibers are modeled as an anisotropic elastic material, and the nanocomposite interphase region and the matrix are considered as isotropic. A microbuckling problem is solved for the unidirectional composite under compression. The analytical solution is compared with finite element simulations for verification. It is determined that the critical load at the onset of buckling is lower in an anisotropic carbon fiber composite than in an isotropic fibfer composite due to lower transverse properties in the fibers. An optimal thickness for nanocomposite interphase region is determined, and this finding provides a guidance for the manufacture of composites using aligned carbon nanotubes as fillers in the nanocomposite interphase region.

Microwave Absorbance of Double-Layer Laminates of Glass Fiber Composite Containing Carbon Black and Carbon Fiber Composite

2020 ◽  
Vol 858 ◽  
pp. 140-145
Author(s):  
Sung Soo Kim
Keyword(s):  
Carbon Fiber ◽  
Carbon Black ◽  
Glass Fiber ◽  
Fiber Composite ◽  
Fiber Composites ◽  
Major Constituent ◽  
Carbon Fiber Composites ◽  
Carbon Fiber Composite ◽  
Band Frequency ◽  
Glass Fiber Composite

The microwave absorbing properties of multi-layer carbon/carbon fiber composites, designed to function as radar absorbing structures (RAS), were studied over the X-band frequency range (8.0-12.4 GHz). High-frequency electromagnetic properties of various fibers (glass, carbon) and particulate filler (carbon black) are investigated as the major constituent materials of the RAS. Free space measurement depicts the perfect reflecting properties of carbon fiber composites (S11 = 0 dB, S21 = −40 dB). In the two-layered composite laminate (impedance transformer/reflecting substrate), the use of carbon black is necessary in the impedance transforming layer to obtain the high level of microwave absorbance and frequency tuning. Through the layer combination of the glass-fiber composite (thickness = 2.45 mm) containing carbon black (3% in weight) and carbon fiber composite as reflecting substrate, S11 can be reduced to as low as −40 dB at the frequency of 11.7 GHz, maintaining a low level of S21. The results demonstrate that RAS can be efficiently designed with the laminates of fiber reinforced composites with impedance transforming layer (glass fiber with suitable amount of carbon black) and perfectly reflecting substrate (carbon fiber).

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