文献类型：会议

作　　者：秦勇

作者单位：兰州大学物理科学与技术学院纳米科学与技术研究所

会议文献：中国科协第282次青年科学家论坛——化学与生物和能源的交叉与融合论文集

会议名称：中国科协第282次青年科学家论坛——化学与生物和能源的交叉与融合

会议日期：20140822

会议地点：兰州

主办单位：中国科学技术协会

语　　种：中文

摘　　要：Long time power source is one of the key challenges for the application of micro/nano sensors,things of internet,etc.Flexible nanogenerator,which can harvest mechanical energies from environment and convert them into electricity,provides a feasible power source.In this presentation,several recently developed nanogenerators and their applications will be reported.Firstly,we talk about a synthesis method of lead zirconate titanate(PZT)textiles in which nanowires are parallel with each other,and a procedure to make them into flexible and wearable nanogenerators.[1] The nanogenerator can generate 6 V output voltage and 45 nA output current,which are large enough to power a liquid crystal display(LCD)and a UV sensor.Secondly,we report a kind of two dimensional fiber-based nanogenerator and the method to increase its robustness greatly,which is beneficial to the wearable and portable energy generation.[2] Thirdly,we talk about a flexible nanogenerator with ultrahigh output voltage of 209 V and output current density of 23.5 μA/cm2,which are sufficiently powerful to instantaneously lighten a commercial light-emitting diode(LED)without the energy storage process.[3] Fourthly,a new magnetic force-driven contactless nanogenerator(CLNG),with no contact between nanogenerator and mechanical movement source,will be demonstrated.

关 键 词：ENERGY HARVESTING NANOGENERATOR PIEZOELECTRIC NANOWIRE