Tensile fatigue behavior of single carbon nanotube yarns

Yang, Enlong; Xü, Zhe; Baniasadi, Mahmoud; Moreno, Salvador; Yi, Honglei; Di, Jiangtao; Baughman, Ray H.; Minary‐Jolandan, Majid

doi:10.1007/s10853-018-2433-y

Cited by 11 publications

(10 citation statements)

References 24 publications

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“…In general, the stress–strain curves indicated almost a linear behavior in the elastic and plastic regions. The same trend for stress–strain curves was observed by other researchers …”

Section: Resultsmentioning

confidence: 99%

Effect of fatigue loading on wicking properties of polyamide 66 nanofiber yarns

Mooneghi

Gharehaghaji

Hosseini‐Toudeshky

et al. 2018

J of Applied Polymer Sci

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The wicking phenomenon is of prime importance with regards to biomedical applications of nanofiber yarns such as suture yarns and tissue scaffolds. In such applications, the yarns are usually subjected to cyclic tensile forces and biological tensile stresses. There is a lack of science behind the effect of fatigue on wicking properties of nanofiber yarns and this work aims at exploring this venue. Wicking properties of polyamide 66 nanofiber yarns are investigated by tracing the color change in the yarn structure resulting from pH changes during the capillary rise of distilled water. Results show that applying cyclic loading increases equilibrium wicking height in the Lucus–Washburn equation, which is attributed to changes in the overall pore structure in the cyclic loaded yarn. The likely causes of these changes are studied by scanning electron microscope, which reveals disentangled, more or less aligned and parallel nanofibers with a smaller radius in the nanofibrous structure. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47206.

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“…In general, the stress–strain curves indicated almost a linear behavior in the elastic and plastic regions. The same trend for stress–strain curves was observed by other researchers …”

Section: Resultsmentioning

confidence: 99%

Effect of fatigue loading on wicking properties of polyamide 66 nanofiber yarns

Mooneghi

Gharehaghaji

Hosseini‐Toudeshky

et al. 2018

J of Applied Polymer Sci

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“…On the other hand, when assemblies of nanotubes undergo cyclic loading [experimentally, frequencies used so far are ~0.1 Hz ( 13 , 39 )], their interfaces, much weaker compared to intrinsic CNT strength, can register a permanent/residual slip during each cycle, which is a characteristic feature of fatigue failure [interfacial slip is operable also in multilayer graphene assemblies as revealed in both experiment and coarse-grained simulations ( 40 , 41 )]. Despite this, the endurance limit of these assemblies can be as high as ~30 to 50% of their strength, which for state-of-the-art nanotube fibers [with s ≃ 10 GPa ( 42 )] could provide significant fatigue resistance, much higher than other commonly used structural materials, and for all conceivable working conditions.…”

Section: Discussionmentioning

confidence: 99%

“…In this context, where the interfaces between nanotubes have frictional load transfer, the fatigue failure of CNT assemblies is very different from its constituents. Since their interfacial interactions are much weaker than their cohesive interactions, cyclic loading of CNT fibers and yarns ( 13 ) produces irreversible slips with each cycle. As a consequence, the time and length scales pertinent to individual CNTs and their assemblies may vastly differ, calling for a multiscale modeling approach.…”

Section: Introductionmentioning

confidence: 99%

Fatigue in assemblies of indefatigable carbon nanotubes

2021

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“…Unfortunately, this mechanical requirement far exceeds the yield strains of metallic foils (e.g., Al and Cu ≤ 1.2%) and active materials (e.g., graphite, LFP and NCM: ≤ 0.5%) in commonly used LIBs ( Table 1 ). [ 13–30 ] However, the yield strains of all the electrodes can be easily increased to 5% by introducing elastic binders and porosity to buffer the large mechanical deformation. [ 31,32 ] Therefore, the feasible pathway of fabricating high‐flexibility FLBs can be realized by replacing metallic foils with soft current collectors.…”

Section: Challenges Of Flexible Lithium Batteriesmentioning

confidence: 99%

Pathways of Developing High‐Energy‐Density Flexible Lithium Batteries

et al. 2021

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Flexible lithium‐based batteries (FLBs) enable the seamless implementation of power supply to flexible and wearable electronics. They not only enhance the energy capacity by fully utilizing the available space but also revolutionize the form factors of future device design. To date, how to simultaneously acquire high energy density and excellent mechanical flexibility is the major challenge of FLBs. Here, a critical discussion for guiding the future development of FLBs toward high energy density and high flexibility is presented. First, the industrial criteria of FLBs for several desirable applications of flexible and wearable electronics are summarized. Then, strategies to achieve flexibility of FLBs are discussed, with highlights of representative examples. The performance of FLBs is benchmarked with a flexible battery plot. New materials and cell design principles are analyzed to realize high‐energy‐density and high‐flexibility FLBs. Other important aspects of FLBs including materials to improve the cycling stability and safety are also discussed.

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Tensile fatigue behavior of single carbon nanotube yarns

Cited by 11 publications

References 24 publications

Effect of fatigue loading on wicking properties of polyamide 66 nanofiber yarns

Effect of fatigue loading on wicking properties of polyamide 66 nanofiber yarns

Fatigue in assemblies of indefatigable carbon nanotubes

Pathways of Developing High‐Energy‐Density Flexible Lithium Batteries

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