【摘 要】
:
One-dimensional MnMoO4 and CoMoO4 nanorods have been prepared by a facile and environmental-friendly two-step processes including microwave-assisted hydrothermal method and sequentially thermal treatm
【机 构】
:
Hubei Key Laboratory of Low Dimensional Optoelectronic Material and Devices,Hubei University of Arts
【出 处】
:
第十五届全国电介质、材料与应用学术会议
论文部分内容阅读
One-dimensional MnMoO4 and CoMoO4 nanorods have been prepared by a facile and environmental-friendly two-step processes including microwave-assisted hydrothermal method and sequentially thermal treatment at 300-500℃.For MnMoO4 nanorods,it was found that the calcination temperature has great influence on the morphologies and electrochemical properties.SEM results show that uniform MnMoO4 nanorods aggregated together with the increasing calcination temperature.The specific capacitance decreased with increasing calcination temperature.The MnMoO4 sample calcined at 300℃ and the CoMoO4 sample calcined at 350℃ can deliver a specific capacitance of 138 F g-1,155 F g-1 at 1 A g-1,degrading by only 7%and 9.8%after 1600 charge-discharge cycles at progressively increased current density,respectively.The results suggest their potential use as electrode materials for supercapacitors.
其他文献
The tungsten bronze structure of strontium barium niobate(Sr1-xBaxNb2O6; hereafter SBN)has good piezoelectric properties.It is an important lead-free piezoelectric material.This paper primarily studie
In this study,amorphous Bi1.5Zn1.0Nb1.5O7(BZN)thin films were deposited at room temperature by radio-frequency(RF)sputtering and BZN multilayer capacitors(MLCs)were fabricated.The BZN thin films depos
BaFe12O19 陶瓷是一种优异的磁性材料,在相关领域得到了广泛的应用.在BaFe12O19 掺入Nb 离子,同时可以获得很高的介电性能,在电子元器件的多功能化应用中具有很大的实际意义.本研究以硝酸钡,硝酸铁,草酸铌,柠檬酸等为原料,通过溶胶-凝胶法制备出不同掺Nb5+量的BaFe12O19 粉体,并最终在一系列不同温度下烧结后,成功获得了BaFe12-xNbxO19 陶瓷.样品经X 射线衍射分
Novel high Curie temperature piezo-/ferroelectric single crystals of BiScO3-Pb(Cd1/3Nb2/3)O3-PbTiO3(BS-PCN-PT)ternary solid solution of complex perovskite structure,with compositions near the morphotr
采用溶胶-凝胶法制备了Eu 和Ca 共掺杂的样品Bi0.9Eu0.05Ca0.05FeO3,同时,还制备了纯的BiFeO3(BFO)样品以及单掺杂的样品Bi0.95Eu0.05FeO3 和Bi0.95Ca0.05FeO3,研究掺杂对BFO 的微观结构、磁性及铁电性的影响.XRD 分析表明,所有样品都具有良好的晶体结构且没有明显的杂相,都为单相的钙钛矿结构.同时掺杂使晶体结构发生变化,特别是共掺杂的
Recently BaTiO3(BTO)films have been a focus of intensive studies in Magnetoelectric coupling effect,ferroelectric tunnel junctions and artificial multiferroic tunnel junctions.In this paper 20 nm and
近年来,铁电基稀土发光材料由于其铁电基质具有较高的电光系数、良好的铁/介电性能以及对稀土离子固溶度高等优异的特性从而受到人们的广泛关注.本文采用丝网印刷工艺制备出稀土Yb3+、Tm3+共掺杂的Ba0.8Sr0.2TiO3陶瓷厚膜,XRD测试结果发现烧结后的厚膜样品可晶化为完整的钙钛矿结构,稀土Yb3+、Tm3+离子在BST厚膜中有较高的固溶度,低掺杂量时Yb3+、Tm3+离子在BST晶格中首先替代
本实验研究了聚酰亚胺薄膜在高压充电后的短路放电发光现象。通过对25 μm 厚的聚酰亚胺薄膜施加较高的直流电场,使其内部注入空间电荷,然后对样品直接短路放电,在此同时测量了样品的发光信号和短路放电电流信号。在之前类似研究的基础上,改进了发光探测方式,利用高速宽带示波器,获得了具有较高时间分辨率的丰富发光信息,使时间分辨率较之前采用单光子计数板的方法有了数倍的提高。研究结果显示,在短路初始阶段,可以检
通过紫外光辐照试验(温度60℃,紫外光强度286 W/m2)研究环氧树脂表面特征和电学性能随紫外光辐照时间的变化.跟踪测量样品在辐照24h、48h、110h、210h 的物化特征及表面电学性能变化.利用高阻绝缘仪测量不同湿度(高纯氮气0.02%RH、45%RH)时的表面电导率,测量结果表明随紫外光辐照时间延长环氧树脂的表面电导率逐渐增加,且在相同紫外光辐照时间比较不同湿度电导率,湿度对电导率大小影
Nucleic acid testing(NAT)promises stable,safe,selective and specific detection of infectious and inherited diseases.However,conventional technologies,such as gel electrophoresis,ultraviolet spectromet