Preparation of Co-Ni Mixed Oxide/Graphene Composite and its Electrochemical Performances as Supercapacitor Material

Abstract:

The Co-Ni mixed oxides/graphene composite has been prepared using the solution based oxidation route. The structures of bare Co-Ni mixed oxides and Co-Ni mixed oxides/graphene composite is clearly studied by X-ray diffraction. The electrochemical properties of Co-Ni mixed oxides/graphene composite are investigated by Cyclic Voltammetry (CV) and galvanostatic charge discharge test. The result shows that, the NiO phase has not been detected in the composite, and the graphene composite delivers a discharge capacity of 353.6 F/g at a current density of 0.32 A g^-1.

• Periodical: Key Engineering Materials (Volume 727)
• Pages: 775-780
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.727.775
• Online since: January 2017
• Authors: Yun Long Zhou, Chen Hao Zhao, Zhi Biao Hu*, Xue Yan Huang, Kai Yu Liu, Xiao Lin Lang
• Keywords: Electrochemical Performance, Graphene, Mixed Metal Oxides, Specific Capacitance

References

[1] Largeot C, Portet C, Chmiola J, et al. Relation between the ion size and pore size for an electric double-layer capacitor[J]. Journal of the American Chemical Society, 2008, 130(9): 2730-2731.

DOI: 10.1021/ja7106178

[2] Kandalkar S, Dhawale D, Kim C K, et al. Chemical synthesis of cobalt oxide thin film electrode for supercapacitor application[J]. Synthetic Metals, 2010, 160(11): 1299-1302.

DOI: 10.1016/j.synthmet.2010.04.003

[3] Han E S, Zhang X P, Xu H. Preparation and modification nano-sized MnO2 electrode material for super capacitor[J]. Inorganic Chemical Industry, 2008, 40(6): 34-36.

[4] Yuan C Z, Zhang X G, Zhang B. Synthesis and electrochemical capacitance of porous Co(OH)2 [J]. Chinese Journal of Applied Chemistry, 2006, 23(4): 456-458.

[5] Conway B E, Brlss V, Wojtowic J. The role and utilization of pseudocapacitance for energy storage by supercapacitors[J]. J Power Sources, 1997, 66: 1-14.

[6] 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: 2603–2607.

DOI: 10.1016/j.apsusc.2008.07.192

[7] Reddy R N, Redd R G. Sol-gel MnO2 as an electrode material for electrochemical capacitors[J]. J Power Sources, 2003, 124: 330-337.

DOI: 10.1016/s0378-7753(03)00600-1

[8] Li Y H, Huang K L, Yao Z F, et al. Co3O4 thin film prepared by a chemical bath deposition for electrochemical capacitors[J]. Electrochimica Acta, 2011, 56: 2140–2144.

DOI: 10.1016/j.electacta.2010.11.074

[9] Li L, He Y Q, Chu X F, et al. Hydrothermal synthesis and partially reduced graphene oxide-K2Mn4O8 nanocomposites as supercapacior[J]. Acta Physical Chemistry Sinica, 2013, 29(8): 1681-1690.

[10] Zhu Y W, Shanthi M, Stoller M D, et al. Carbon-based suppercapcitors produced by activation of grapheme[J]. Science, 2011, 332: 1537-1541.

[11] Zhong J J. Study on the preparation and capacitance properties of nickel oxide composites[D]. Central South University, (2014).

[12] Zhang Y J, Song C X, Liu W, et al. Hydrothermal synthesis and electrochemical properties of Co3O4/graphene oxide composite[J]. Chinese Journal of Power Sources, 2014, 38(10): 1875-1878.

[13] Wang G, Zhang L, Zhang J. A review of electrode materials for electrochemical supercapacitors[J]. Chemical Society Review, 2012, 41(2): 797-828.