采用微波法快速制备了石墨烯/氧化镍(MWGO/NiO)复合材料,利用扫描电子显微镜、X射线衍射仪和傅里叶变换红外光谱仪对其结构和形貌进行了表征。通过循环伏安法和恒电流充放电测试了MWGO/NiO复合材料的电化学性能,考察了微波功率、微波时间、投料比对复合材料性能的影响。结果表明:氧化石墨烯与硝酸镍质量比为5∶4、微波功率为1000W、微波时间为2min时,制备的复合材料电化学性能最好;在充放电电流密度为1A/g及KOH电解液浓度为6mol/L时,复合材料的最大比电容为360.5F/g。
The graphene/nickel oxide composites were prepared by microwave method.The structure and morphology of MWGO/NiO were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD),fourier transform infrared spectroscopy(FT-IR).The electrochemical properties of MWGO/NiO were measured by cyclic voltammetry and constant current charge-discharge.The effects of microwave power,microwave reaction time and feed ratio on the properties of the composites were investigated.The results shown that the electrochemical performance was the best when the mass ratio of GO to Ni(NO3)2·6H2O was 5∶4,microwave power was 1000W and microwave time was 2min.The maximum specific capacitance was 360.5F/g when the current density of charge and discharge was 1A/g and 6mol/L KOH electrolyte.
[1] Sk M M,Yue C Y,Ghosh K,et al.Review on advances in porous nanostructured nickel oxides and their composite electrodes for high-performance supercapacitors[J].Journal of Power Sources,2016,308:121-140.
[2] Naseri F,Farjah E,Ghanbari T.An efficient regenerative braking system based on battery/supercapacitor for electric,hybrid,and plug-in hybrid electric vehicles with BLDC motor[J].IEEE Transactions on Vehicular Technology,2017,66(5):3724-3738.
[3] González-Gil A,Palacin R,Batty P.Sustainable urban rail systems:strategies and technologies for optimal management of regenerative braking energy[J].Energy Conversion & Management,2013,75(5):374-388.
[4] 陈婵娟,张雅迪,郭秉淑,等.MnOOH/石墨纳米片阵列复合电极的制备及其对称型超级电容器的性能[J].化工新型材料,2017,45(1):219-222.
[5] 朱杨军,代芳,王姣姣,等.高比表面积活性炭基水系Na2SO4电化学电容器的制备[J].化工新型材料,2016,44(11):143-145.
[6] Zhang L L,Zhao X S.Carbon-based materials as supercapacitor electrodes[J].Chemical Society Reviews,2009,38(9):2520.
[7] Wei W,Cui X,Chen W,et al.Manganese oxide-based materials as electrochemical supercapacitor electrodes[J].Chemical Society Reviews,2011,40(3):1697-1721.
[8] Snook G A,Kao P,Best A S.Conducting-polymer-based supercapacitor devices and electrodes[J].Journal of Power Sources,2011,196(1):1-12.
[9] 林煦呐,宋朝霞,曾森,等.氢氧化镍/氧化石墨烯复合电极材料的研究[J].电源技术,2016,40(1):117-120.
[10] Wang Y,Guo J,Wang T,et al.Mesoporous transition metal oxides for supercapacitors[J].Nanomaterials,2015,5(4):1667-1689.
[11] 黄涛,李晓娜,杨则恒.多孔氧化镍纳米颗粒的制备及其电化学性能研究[J].中国科学技术大学学报,2017,47(5):385-391.
[12] Patil U M,Salunkhe R R,Gurav K V,et al.Chemically deposited nanocrystalline NiO thin films for supercapacitor application[J].Applied Surface Science,2008,255(5):2603-2607.
[13] Zhu J,He J.Facile synthesis of graphene-wrapped honeycomb MnO2 nanospheres and their application in supercapacitors[J].Acs Applied Materials & Interfaces,2012,4(3):1770.
[14] Li Q,Wei Q,Xie L,et al.Layered NiO/reduced graphene oxide composites by heterogeneous assembly with enhanced performance as high-performance asymmetric supercapacitor cathode[J].RSC Advances,2016,6(52):46548-46557.
[15] Lamiel C,Nguyen V H,Tuma D,et al.Non-aqueous synthesis of ultrasmall NiO nanoparticle-intercalated graphene composite as active electrode material for supercapacitors[J].Materials Research Bulletin,2016,83(16):275-283.
[16] Jr W S H,Offeman R E.Preparation of graphitic oxide[J].Journal of the American Chemical Society,1958,80(6):1339.
[17] Bi Yuhong,Nautiyal Amit,Zhang Huaiping,et al.Facile and ultrafast solid-state microwave approach to MnO2-NW@graphite nanocomposites for supercapacitors[J].Ceramics International,2018,44(5):5402-5410.
[18] Bi Yuhong,Nautiyal Amit,Zhang Huaiping,et al.One-pot microwave synthesis of NiO/MnO2 composite as a high performance electrode material for supercapacitors[J].Electrochimica Acta,2018,260(17):952-958.
[19] Liu K C,Anderson M A.ChemInform abstract:porous nickel oxide/nickel films for electrochemical capacitors[J].Cheminform,1996,27(19):124-129.
基金资助
国家自然科学基金(21306124)
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