Materials and approaches for on-body energy harvesting
Materials and approaches for on-body energy harvesting
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DOI：
10.1557/mrs.2018.33
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发表时间：
2018-03
期刊：
影响因子：
5
通讯作者：
S. Roundy;S. Trolier-McKinstry
中科院分区：
文献类型：
--
作者：
S. Roundy;S. Trolier-McKinstry
人体是一个具有挑战性的能量收集平台。对于热电器件，皮肤和空气之间的小温差需要具有低热导率的材料，以保持有用的输出功率。对于动力学采集，人体运动不是强烈的音调，频率非常低，并且加速度适中。动力学收割可以分为两类：惯性收割，其中人体运动激发惯性质量，其运动被转换为电力;以及服装集成收割，其中收割材料与服装或其他灵活的可穿戴系统集成。在第一种情况下，关键问题是系统的机电动力学和具有改进的机电转换品质因数的材料。在第二种情况下，提供柔韧性、拉伸性和舒适性的材料是最重要的。
The human body is a challenging platform for energy harvesting. For thermoelectrics, the small temperature differences between the skin and air necessitate materials with low thermal conductivities in order to maintain useful output powers. For kinetic harvesting, human motion is not strongly tonal, the frequencies are very low, and the accelerations are modest. Kinetic harvesting can be split into two categories—inertial, in which human motion excites an inertial mass–the motion of which is transduced to electricity, and clothing integrated, in which the harvesting material is integrated with a garment or other flexible wearable system. In the first case, key issues are the electromechanical dynamics of the system and materials with improved electromechanical transduction figures of merit. In the second case, materials that provide flexibility, stretchability, and comfort are of primary importance.