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Advanced Materials

Superstrong Ultralong Carbon Nanotubes for Mechanical Energy Storage

Authors

  • Rufan Zhang,

    1. Beijing Key Laboratory of Green Chemical Reaction, Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China, Tel.: 8610-62785464
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  • Qian Wen,

    1. Beijing Key Laboratory of Green Chemical Reaction, Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China, Tel.: 8610-62785464
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  • Weizhong Qian,

    1. Beijing Key Laboratory of Green Chemical Reaction, Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China, Tel.: 8610-62785464
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  • Dang Sheng Su,

    1. Catalysis and Materials Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
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  • Qiang Zhang,

    1. Beijing Key Laboratory of Green Chemical Reaction, Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China, Tel.: 8610-62785464
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  • Fei Wei

    Corresponding author
    1. Beijing Key Laboratory of Green Chemical Reaction, Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China, Tel.: 8610-62785464
    • Beijing Key Laboratory of Green Chemical Reaction, Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China, Tel.: 8610-62785464.
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Abstract

Superstrong, ultralong, individual carbon nanotubes (CNTs) are deposited with TiO2 particles and visualized under an optical microscope with excellent strain-relaxation reversibility and high fatigue resistance capability. The CNTs with perfect structures have tensile strengths of up to 200 GPa, densities to 1.34 TPa, energy density as high as 1125 Wh kg−1 and the power density can be up to 144 MW kg−1 for mechanical energy storage. The superb mechanical properties confirm the potential of an individual CNT as an effective storage medium with mechanical energy for nano-electromechanical systems, flexible devices, sensors, actuators, antennas, etc.

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