采用一种简单的溶剂热方法,成功制得具有银耳状的多层级钼酸铋纳米花材料。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、傅里叶变换红外光谱(FT-IR)等测试手段对其物理性质进行了表征。以钼酸铋为锂离子电池负极活性物质,通过循环伏安,交流阻抗和恒电流充放电对钼酸铋的电化学性能进行测试,结果显示在电流密度为20mA/g的条件下,钼酸铋的首次放电比容量达177.8mAh/g,循环30周期后库伦效率仍保持在100%左右。
Tremella-like hierarchical bismuth molybdate nanoflower was prepared by a simple hydrothermal method.To explore the possibility of using as negative electrodes in lithium-ion battery,the structural properties were studied by X-ray diffraction (XRD),scanning electron microscopy (SEM) and fourier transform infrared spectroscopy (FT-IR).The electrochemical performances were tested by cyclic voltammetry,electrochemical impedance spectroscopy and galvanostatic method.The results displayed that the initial specific capacitance of bismuth molybdate was 177.8mAh/g at a current density of 20mA/g and the efficiency of coulomb was still about 100% after 30 cycles.
[1] Chen F,Niu C,Yang Q,et al.Facile synthesis of visible-light-active BiOI modified Bi2MoO6 photocatalysts with highly enhanced photocatalytic activity[J].Ceramics International,2016,42(2):2515-2525.
[2] 徐杨森.基于钼酸铋银盐异质结光催化剂的制备表征及可见光光催化性能的研究[D].广州:华南理工大学,2013.
[3] He R,Cao S,Zhou P,et al.Recent advances in visible light Bi-based photocatalysts[J].Chinese Journal of Catalysis,2014,35(7):989-1007.
[4] Li J,Liu X,Sun Z,et al.Novel yolk-shell structure bismuth-rich bismuth molybdate microspheres for enhanced visible light photocatalysis[J].Journal of Colloid and Interface Science,2015,452:109-115.
[5] Ma Y,Jia Y,Wang L,et al.Hierarchical nanosheet-based Bi2MoO6 nanotubes with remarkably improved electrochemical performance[J].Journal of Power Sources,2016,331:481-486.
[6] Zhang P,Shao C,Zhang M,et al.Bi2MoO6 ultrathin nanosheets on ZnTiO3 nanofibers:a 3D open hierarchical heterostructures synergistic system with enhanced visible-light-driven photocatalytic activity[J].Journal of Hazardous Materials,2012,217/218:422-428.
[7] Li J,Liu X,Sun Z,et al.Novel Bi2MoO6/TiO2 heterostructure microspheres for degradation of benzene series compound under visible light irradiation[J].Journal of Colloid and Interface Science,2016,463:145-153.
[8] Shang M,Wang W,Ren J,et al.Nanoscale kirkendall effect for the synthesis of Bi2MoO6 boxes via a facile solution-phase method[J].Nanoscale,2011,3(4):1474-1476.
[9] Zhao X,Xu T,Yao W,et al.Synthesis and photoelectrochemical properties of thin bismuth molybdates film with various crystal phases[J].Thin Solid Films,2009,517(20):5813-5818.
[10] Xie H D,Yang W,Wang Z Q,et al.Preparation and photocatalytic electrocatalytic properties of γ-Bi2MoO6[J].Advances in Material Chemistry,2013,1:13-16.
[11] Janáky C,Rajeshwar K.The role of (photo) electrochemistry in the rational design of hybrid conducting polymer/semiconductor assemblies:from fundamental concepts to practical applications[J].Progress in Polymer Science,2015,43:96-135.
[12] Mandal M,Ghosh D,Giri S,et al.Polyaniline-wrapped 1D CoMoO4·0.75H2O nanorods as electrode materials for supercapacitor energy storage applications[J].RSC Advances,2014,4(4):30832-30839.
[13] Xia X,Lei W,Hao Q,et al.One-step synthesis of CoMoO4/graphene composites with enhanced electrochemical properties for supercapacitors[J].Electrochimica Acta,2013,99:253-261.
[14] Chen L,Sun L J,Luan F,et al.Synthesis and pseudocapacitive studies of composite films of polyaniline and manganese oxide nanoparticles[J].Journal of Power Sources,2010,195(11):3742-3747.
[15] Senthilkumar B,Selvan R K,Vasylechko L,et al.Synthesis,crystal structure and pseudocapacitor electrode properties of γ-Bi2MoO6 nanoplates[J].Solid State Sciences,2014,35:18-27.
[16] Xu H,Zhuang J X,Li J L,et al.Liquid precipitation synthesis of Co3O4 for high-performance electrochemical capacitors[J].Ionics,2014,20(4):489-494.
[17] Attidekou P S,Lambert S,Armstrong M,et al.A study of 40Ah lithium ion batteries at zero percent state of charge as a function of temperature[J].Journal of Power Sources,2014,269:694-703.
[18] Liu M C,Kong L B,Lu C,et al.Design and synthesis of CoMoO4-NiMoO4·xH2O bundles with improved electrochemical properties for supercapacitors[J].Journal of Materials Chemistry A,2013(4):1380-1387.
基金资助
河南省科技攻关计划(152102210061);河南省高等学校重点科研项目(17A150025);河南工业大学青年骨干教师培育计划(2015007);河南工业大学高层次人才科研启动基金(2016BS011)
PDF
(2419KB)
