ZnO micro-nano spheres covered with ZnO nanowires were synthesized at 650 ℃ without using cataly-sts. Characterizations of the products by TEM, SEM, XRD, SAED and EDS showed that the ZnO nanowires were of high purity...ZnO micro-nano spheres covered with ZnO nanowires were synthesized at 650 ℃ without using cataly-sts. Characterizations of the products by TEM, SEM, XRD, SAED and EDS showed that the ZnO nanowires were of high purity and single-crystalline with hexagonal wurtzite structure. The diameter of ZnO nanowires ranges from 60 to 200 nm and the length is longer than 10 μm. The size of the ZnO micro-nano spheres ranges from hundreds of nanometers to tens of microns. At the same time, the growth mechanism of ZnO micro-nano spheres is discussed.展开更多
采用醇热法,以醋酸锌(Zn(AC)_2·2H_2O)、一缩二乙二醇(C_4H_(10)O_3)和二水乙酸锂(Li(AC)_2·2H_2O)为原料制备了具有多级结构的ZnO微球。主要研究了ZnO浆料制备工艺和膜厚对电池性能的影响。采用XRD对ZnO粉进行物相分析、采用...采用醇热法,以醋酸锌(Zn(AC)_2·2H_2O)、一缩二乙二醇(C_4H_(10)O_3)和二水乙酸锂(Li(AC)_2·2H_2O)为原料制备了具有多级结构的ZnO微球。主要研究了ZnO浆料制备工艺和膜厚对电池性能的影响。采用XRD对ZnO粉进行物相分析、采用SEM对ZnO粉的形貌进行了表征,采用电化学工作站对电池的电化学性能进行了分析,并测试了电池的I-V曲线。结果表明:球磨时间3 h,膜厚为20μm条件下得到的电池性能最好,该电池的光电转换效率达到3.39%,开路电压Voc为0.60V,短路电流密度Jsc为8.66 m A/cm^2,填充因子FF为0.64。展开更多
文摘ZnO micro-nano spheres covered with ZnO nanowires were synthesized at 650 ℃ without using cataly-sts. Characterizations of the products by TEM, SEM, XRD, SAED and EDS showed that the ZnO nanowires were of high purity and single-crystalline with hexagonal wurtzite structure. The diameter of ZnO nanowires ranges from 60 to 200 nm and the length is longer than 10 μm. The size of the ZnO micro-nano spheres ranges from hundreds of nanometers to tens of microns. At the same time, the growth mechanism of ZnO micro-nano spheres is discussed.
文摘采用醇热法,以醋酸锌(Zn(AC)_2·2H_2O)、一缩二乙二醇(C_4H_(10)O_3)和二水乙酸锂(Li(AC)_2·2H_2O)为原料制备了具有多级结构的ZnO微球。主要研究了ZnO浆料制备工艺和膜厚对电池性能的影响。采用XRD对ZnO粉进行物相分析、采用SEM对ZnO粉的形貌进行了表征,采用电化学工作站对电池的电化学性能进行了分析,并测试了电池的I-V曲线。结果表明:球磨时间3 h,膜厚为20μm条件下得到的电池性能最好,该电池的光电转换效率达到3.39%,开路电压Voc为0.60V,短路电流密度Jsc为8.66 m A/cm^2,填充因子FF为0.64。