Harvesting electrical energy from carbon nanotube yarn twist

Kim, Shi Hyeong; Haines, Carter S.; Li, Na; Kim, Keon Jung; Mun, Tae Jin; Choi, Changsoon; Di, Jiangtao; Oh, Young Jun; Oviedo, Juan Pablo; Bykova, Julia; Fang, Shaoli; Jiang, Nan; Liu, Zunfeng; Wang, Run; Kumar, Prashant; Qiao, Rui; Priya, Shashank; Cho, Kyeongjae; Kim, Moon J.; Lucas, M. S.; Drummy, Lawrence F.; Maruyama, Benji; Lee, Dong Youn; Lepró, Xavier; Gao, Enlai; Albarq, Dawood; Ovalle‐Robles, Raquel; Kim, Seon Jeong; Baughman, Ray H.

doi:10.1126/science.aam8771

Cited by 347 publications

(353 citation statements)

References 72 publications

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“…[14] An elastic coiled structure was obtainedb yi nserting extreme twist into aCNT yarn. An aligned CNT yarn harvester that converts tensile or rotational energy of the yarn into electricity in static solution was previously proposed.…”

Section: Nanogenerators Based On Aligned Carbon Nanotubesmentioning

confidence: 99%

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Generating Electricity from Water through Carbon Nanomaterials

Chen

Peng

2018

Chemistry A European J

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Over the past ten years, electricity generation from water in carbon-based materials has aroused increasing interest. Water-induced mechanical-to-electrical conversion has been discovered in carbon nanomaterials, including carbon nanotubes and graphene, through the interaction with flowing water as well as moisture. In this Concept article, we focus on the basic principles of electric energy harvesting from flowing water through carbon nanomaterials, and summarize the material modification and structural design of these nanogenerators. The current challenges and potential applications of power conversion with carbon nanomaterials are finally highlighted.

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Section: Nanogenerators Based On Aligned Carbon Nanotubesmentioning

confidence: 99%

“…The EDL is formed at the interface between the CNT and the fluid as the fluid contacts the FFNG. [14] Copyright 2017, American Associationf or the Advancement of Science. a) Dependence of the output voltageo nt he velocity of water.R eproduced with permission.…”

Section: Nanogenerators Based On Aligned Carbon Nanotubesmentioning

confidence: 99%

Generating Electricity from Water through Carbon Nanomaterials

Chen

Peng

2018

Chemistry A European J

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“…[3b, 4] Fori nstance,ahelical wire-shaped carbon nanotube CNT/TiO 2 energy device has been developed for photoelectric conversion and electrochemical storage. [5] Despite that the helical structures have been well investigated for converting tensile or torsional mechanical energy into electrical energy,t he applications of such materials in electrocatalysis have rarely been reported. [5] Despite that the helical structures have been well investigated for converting tensile or torsional mechanical energy into electrical energy,t he applications of such materials in electrocatalysis have rarely been reported.…”

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confidence: 99%

Cobalt–Nitrogen‐Doped Helical Carbonaceous Nanotubes as a Class of Efficient Electrocatalysts for the Oxygen Reduction Reaction

et al. 2018

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The oxygen reduction reaction (ORR) is of significant importance in the development of fuel cells. Now, cobalt-nitrogen-doped chiral carbonaceous nanotubes (l/d-CCNTs-Co) are presented as efficient electrocatalysts for ORR. The chiral template, N-stearyl-l/d-glutamic acid, induces the self-assembly of well-arranged polypyrrole and the formation of ordered graphene carbon with helical structures at the molecular level after the pyrolysis process. Co was subsequently introduced through the post-synthesis method. The obtained l/d-CCNTs-Co exhibits superior ORR performance, including long-term stability and better methanol tolerance compared to achiral Co-doped carbon materials and commercial Pt/C. DFT calculations demonstrate that the charges on the twisted surface of l/d-CCNTs are widely separated; as a result the Co atoms are more exposed on the chiral CCNTs. This work gives us a new understanding of the effects of helical structures in electrocatalysis.

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“…Previously, different types of energy generators covering a very broad range of applications is proposed and discussed . Electrostatic generators have existed for a long time; the Van de Graaff generator from the early 20th century is probably the most famous one.…”

Section: Introductionmentioning

confidence: 99%

Electric power generation using a parallel‐plate capacitor

2019

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Summary In this study, we propose an efficient design for a portable energy generator using a parallel‐plate capacitor. Analytical calculations show that if charge (Q) is kept constant and dielectric subsequently removed from the capacitor, then electrostatic energy increases by a factor of εr (permittivity). Initially, a priming charge must be loaded onto the capacitors that are subsequently disconnected from the voltage source. A significant mechanical nonlinear force is needed to remove the dielectric slab. In the proposed configuration, dielectric constitutes the rotor of generator and is located between two pairs of conducting disks, which constitute the stator. The rotor is divided into four dielectric sectors at 60° spacing whereas the stator is divided into six conducting sectors at 30° spacing. In each cycle, two dielectric slabs go inside the capacitor and two other come outside. This specific geometrical arrangement diminishes the extent of mechanical forces and helps to enhance the efficiency of generator significantly. Additionally, this work also relates to generating large amplitude of voltage that can be used as a high voltage source.

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Harvesting electrical energy from carbon nanotube yarn twist

Cited by 347 publications

References 72 publications

Generating Electricity from Water through Carbon Nanomaterials

Generating Electricity from Water through Carbon Nanomaterials

Cobalt–Nitrogen‐Doped Helical Carbonaceous Nanotubes as a Class of Efficient Electrocatalysts for the Oxygen Reduction Reaction

Electric power generation using a parallel‐plate capacitor

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