溶剂热法制备α-V2O5空心纳米微球及其电化学性能研究

梁健1,杨飞1,2*,张永明1,范例1

化工新型材料 ›› 2017, Vol. 45 ›› Issue (9) : 121 -123.

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化工新型材料 ›› 2017, Vol. 45 ›› Issue (9) : 121-123. DOI:
科学研究

溶剂热法制备α-V2O5空心纳米微球及其电化学性能研究

    梁健1,杨飞1,2*,张永明1,范例1
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Preparation of hollow α-V2O5 nanosphere as novel electrode material for supercapacitor through solvothermal method

  • Liang Jian1, Yang Fei1,2, Zhang Yongming1, Fan Li1
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摘要

采用环保经济的溶剂热法,在不使用任何模板和催化剂的条件下,以乙二醇为溶剂,制得由五氧化二钒(V2O5)纳米棒组成的α-五氧化二钒(α-V2O5)空心纳米微球。经过X射线粉末衍射(XRD)、扫描电子显微镜(SEM)分析可知,α-V2O5空心纳米微球直径约2μm,壁厚约250nm。将α-V2O5空心纳米微球作为超级电容器的电极材料,在1mol氯化钾(KCl)水系电解质和1mol聚乙烯醇(PVA)/氯化锂(LiCl)(PVA/LiCl)固体电解质分别进行电化学性能测试,结果显示,在充放电电流密度为1mA/cm2时,在固体电解质中,α-V2O5空心纳米微球电级的比电容达到346mF/cm2,进行6000次循环充放电后,材料的容量保持率高达82%。α-V2O5空心纳米微球具有良好的超级电容器性能。

Abstract

The α-vanadium pentoxide(α-V2O5) hollow nanospheres were prepared by a green,practical solvothermal method in ethylene glycol without any templates.The as-prepared hollow nanospheres had a diameter of around 2μm and wall thickness about 250nm,in which had a highly open architecture formed by α-V2O5 nanorods during the process of Ostwald ripening.Therefore,the α-V2O5 hollow nanosphere electrodes exhibited exceptional specific capacitances of 698mF/cm2 and 346mF/cm2 at the current density of 1mA/cm2 in 1mol KCl solution and 1mol PVA/LiCl solid electrolyte,respectively.Moreover,the electrode had good cycling electrochemical stability with 82% of its initial value after 6000 cycles.The outstanding performance of the α-V2O5 hollow nanospheres revealed its potential to be a promising material for supercapacitor.

关键词

超级电容器 / α-V2O5 / 溶剂热

Key words

supercapacitor / α-V2O5 / solvothermal method

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溶剂热法制备α-V2O5空心纳米微球及其电化学性能研究[J]. 化工新型材料, 2017, 45(9): 121-123 DOI:

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参考文献

[1] Simon P,Gogotsi Y,Dunn B,et al.Where do batteries end and supercapacitors begin[J].Science,2014,343(6176):1210-1212.
[2] Dubal D P,Ayyad D P,Ruiz V,et al.Hybrid energy storage:the merging of battery and supercapacitor chemistries[J].Chem Soc Rev,2015,44(3):1777-1790.
[3] Yu Z,Tetard L,Zhai L,et al.Supercapacitor electrode materials:nanostructures from 0 to 3 dimensions[J].Energy Environ Sci,2015,8(2):702-730.
[4] Ji W,Ji J,Cui X,et al.Polypyrrole encapsulation on flower-like porous NiO for advanced high-performance supercapacitors[J].Chem Comm,2015,51:7669-7672.
[5] Wang Y,Zhou T,Jiang K,et al.Reduced mesoporous Co3O4 nanowires as efficient water oxidation electrocatalysts and supercapacitor electrodes[J].Advanced Energy Materials,2014,4(16):562-568.
[6] Gao Y,Wu D,Wang T,et al.One-step solvothermal synthesis of quasi-hexagonal Fe2O3 nanoplates/graphene composite as high performance electrode material for supercapacitor[J].Electrochimica Acta,2016,191(4):275-283.
[7] Li F,Zhang Y X,Huang M,et al.Rational design of porous MnO2 tubular arrays via facile and templated method for high performance supercapacitors[J].Electrochimica Acta,2015,154(4):329-337.
[8] Liu Y,Clark M,Zhang Q,et al.V2O5 nano-electrodes with high power and energy densities for thin film li-ion batteries[J].Advanced Energy Materials,2011,1(2):194-202.
[9] Saravanakumar B,Purushothaman K K,Muralidharan G.Interconnected V2O5 nanoporous network for high-performance supercapacitors[J].ACS Applied Materials & Interfaces,2012,4(9):4484-4490.
[10] Zhao Y,Han C,Yang J,et al.Stable alkali metal ion intercalation compounds as optimized metal oxide nanowire cathodes for lithium batteries[J].Nano Letters,2015,15(3):2180-2185.
[11] Cao L,Zhu J,Li Y,et al.Ultrathin single-crystalline vanadium pentoxide nanoribbons constructed 3D networks for superior energy storage[J].J Mater Chem A,2014,2(6):13136-13142.
[12] Liu B,Zeng H C.Symmetric and asymmetric ostwald ripening in the fabrication of homogeneous core-shell semiconductors[J].Small,2005,1(5):566-571.
[13] Liu J,Liu F,Gao K,et al.Recent developments in the chemical synthesis of inorganic porous capsules[J].Journal of Materials Chemistry,2009,19(34):6073-6084.
[14] Kalishwaralal K,Deepak V,Ramkumarpandian S,et al.Extracellular biosynthesis of silver nanoparticles by the culture supernatant of Bacillus licheniformis[J].Materials Letters,2008,62(29):4411-4413.
[15] Zhang S,Pan N.Supercapacitors performance evaluation[J].Advanced Energy Materials,2015,5(6):962-965.
[16] Zhang X F,Wang K X,Wei X,et al.Carbon-coated V2O5 nanocrystals as high performance cathode material for lithium ion batteries[J].Chemistry of Materials,2011,23(24):5290-5292.
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