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A novel free-standing anode of CuO nanorods in carbon nanotube webs for flexible lithium ion batteries

  • Lee, Sehyun (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Song, Hyeonjun (Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University) ;
  • Hwang, Jun Yeon (Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST)) ;
  • Kim, Seung Min (Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST)) ;
  • Jeong, Youngjin (Department of Organic Materials and Fiber Engineering, Soongsil University)
  • Received : 2017.08.17
  • Accepted : 2017.10.20
  • Published : 2018.07.31

Abstract

Free-standing electrodes of CuO nanorods in carbon nanotubes (CNTs) are developed by synthesizing porous CuO nanorods throughout CNT webs. The electrochemical performance of the free-standing electrodes is evaluated for their use in flexible lithium ion batteries (LIBs). The electrodes comprising CuO@CNT nanocomposites (NCs) were characterized by charge-discharge testing, cyclic voltammetry, and impedance measurement. These structures are capable of accommodating a high number of lithium ions as well as increasing stability; thus, an increase of capacity in long-term cycling and a good rate capability is achieved. We demonstrate a simple process of fabricating free-standing electrodes of CuO@CNT NCs that can be utilized in flexible LIBs with high performance in terms of capacity and cycling stability.

Keywords

Acknowledgement

Grant : Development of the direct spinning process for continuous carbon nanotube fibers

Supported by : Ministry of Trade, Industry & Energy (MOTIE), Korea Institute of Science and Technology Institutional

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