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CARBONLETT, vol. 27, no. 1, pp.98-107, 2018

DOI: http://dx.doi.org/ DOI:10.5714/CL.2018.27.098

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

Sehyun Lee1,*, Hyeonjun Song2,*, Jun Yeon Hwang3, Seung Min Kim3 and Youngjin Jeong1,2,♠

Affiliation: 1Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul 06978, Korea
2Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul 06978, Korea
3Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Wanju 55324, Korea

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.

Keyword: copper oxide, carbon nanotube, free-standing electrode, lithium ion battery, flexible battery