Graphene Supported Ni-based Nanocomposites as Electrode Materials with High Capacitance

作者: Tao Meng , Qian-Qian Xu , Yin-Tao Li , Xiang-Ying Xing , Chun-Sheng Li

DOI: 10.1016/J.ELECTACTA.2014.12.113

关键词: GrapheneScanning electron microscopeFourier transform infrared spectroscopyDielectric spectroscopyTransmission electron microscopyMaterials scienceGraphene oxide paperCyclic voltammetrySupercapacitorAnalytical chemistry

摘要: Abstract The Ni-based/graphene materials were synthesized by a simple hydrothermal method, using the graphene oxide as support precursor. textural and structural properties of as-prepared samples fully characterized X-ray diffraction, scanning electron microscopy, transmission thermalgravimetric analysis Fourier transform infrared spectroscopy, respectively. Electrochemical examined cyclic voltammetry, electrochemical impedance spectroscopy charge-discharge tests. results showed that 15%-β-Ni(OH) 2 /graphene had high specific capacity 2077 F g −1 at 5 mV s in range 0.0–0.7 V (vs. Ag/AgCl) good cycle life with 965 F g after 500 cycles 50 mV s .

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