Flexible ZnO-Cellulose Nanocomposite for Multisource Energy Conversion
Flexible ZnO-Cellulose Nanocomposite for Multisource Energy Conversion
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DOI：
10.1002/smll.201100458
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发表时间：
2011-08-08
期刊：
影响因子：
13.3
通讯作者：
Ajayan, Pulickel M.
中科院分区：
文献类型：
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作者：
Kumar, Ashavani;Gullapalli, Hemtej;Ajayan, Pulickel M.
具有从周围环境中利用多种能源的能力的材料可能会导致新型的能量收集系统。它表明，由嵌入在一个共同的纸基质的氧化锌纳米结构组成的纳米复合薄膜可以直接用作能量转换装置，将机械能和热能转化为电能。这些机械坚固且灵活的器件可以在大面积上制造，并且能够分别产生高达80 mV和50 nW cm（-2）的输出电压和功率。此外，它表明，通过集成一定数量的设备（串联和并联）的输出电压和伴随的输出功率可以显着增加。此外，输出电压和功率可以通过缩放器件的尺寸来增强。这种基于嵌入在柔性纸基质中的ZnO纳米结构的多波长能量收集系统提供了一个简化且具有成本效益的平台，用于捕获实际应用中的痕量能量。
Materials with the ability to harness multiple sources of energy from the ambient environment could lead to new types of energy-harvesting systems. It is demonstrated that nanocomposite films consisting of zinc oxide nanostructures embedded in a common paper matrix can be directly used as energy-conversion devices to transform mechanical and thermal energies to electric power. These mechanically robust and flexible devices can be fabricated over large areas and are capable of producing an output voltage and power up to 80 mV and 50 nW cm(-2), respectively. Furthermore, it is shown that by integrating a certain number of devices (in series and parallel) the output voltage and the concomitant output power can be significantly increased. Also, the output voltage and power can be enhanced by scaling the size of the device. This multisource energy-harvesting system based on ZnO nanostructures embedded in a flexible paper matrix provides a simplified and cost-effective platform for capturing trace amounts of energy for practical applications.