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논문 기본 정보

자료유형
학술저널
저자정보
Chuanyin Xiong (Shaanxi University of Science and Technology) Tiehu Li (Northwestern Polytechnical University) Tingkai Zhao (Northwestern Polytechnical University) Alei Dang (Northwestern Polytechnical University) Xianglin Ji (Northwestern Polytechnical University) Hao Li (Northwestern Polytechnical University) Mohammad Etesami (Case Western Reserve University)
저널정보
성균관대학교 성균나노과학기술원 NANO NANO Vol.13 No.1
발행연도
2018.1
수록면
116 - 123 (8page)

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In this paper, a facile method is designed to fabricate three-dimensional (3D) graphene (GR)/ manganese dioxide (MnO2) nanowall electrode material. The 3D GR/MnO2 hybrid is prepared by a combination of electrochemical deposition (ELD) and electrophoresis deposition (EPD), followed by thermal reduction (TR). Firstly, the 3D graphene oxide (GO)/MnO2 hybrid is obtained by the ELD–EPD method. Secondly, the 3D GR/MnO2 hybrid is obtained through hydrogen reduction at a certain temperature. The as-fabricated hybrid has been characterized by scanning electron microscope (SEM), transmission electron microscope (TEM) and Raman spectroscopy. The electrochemical properties have been also measured by cyclic voltammetry. The results showed that the 3D GR/MnO2 nanowalls hybrid has a high specific capacitance of 266.75 Fg -1 and a high energy density of 25.36 Whkg -1. Moreover, a high specific capacitance (240.15 Fg -1) at a high scan rate of 200 mVs -1 (90% capacity retention) has been also obtained. Additionally, the hybrid can serve directly as the electrodes of supercapacitor without adding binder. This work provides a novel road to fabricate a binder-free 3D GR-based hybrid for high performance energy storage devices.

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