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A universal self-charging system driven by random biomechanical energy for sustainable operation of mobile electronics

Human biomechanical energy is characterized by fluctuating amplitudes and variable low frequency, and an effective utilization of such energy cannot be achieved by classical energy-harvesting technologies. Here we report a high-efficient self-charging power system for sustainable operation of mobile electronics exploiting exclusively human biomechanical energy, which consists of a high-output triboelectric nanogenerator, a power management circuit to convert the random a.c. energy to d.c. electricity at 60% efficiency, and an energy storage device. With palm tapping as the only energy source, this power unit provides a continuous d.c. electricity of 1.044 mW (7.34 W m-3) in a regulated and managed manner. This self-charging unit can be universally applied as a standard ‘infinite-lifetime’ power source for continuously driving numerous conventional electronics, such as thermometers, electrocardiograph system, pedometers, wearable watches, scientific calculators and wireless radio-frequency communication system, which indicates the immediate and broad applications in personal sensor systems and internet of things.

Nature Communications 6, Article number: 8975 doi:10.1038/ncomms9975
Received 19 August 2015 Accepted 19 October 2015 Published 11 December 2015

http://www.nature.com/ncomms/2015/151123/ncomms9975/full/ncomms9975.html

人体生物能是通过波动幅度和可变低频来描述的,不过依靠传统的能量采集技术无法有效利用这些能量。 Niu 等人报道了一种高效自充电能量系统,可以利用人体生物力学能为移动电子设备充电。这套系统包括一个高输出摩擦起电纳米发电器、一个能源管理电路以及一个储能装置。以摩擦作为唯一能量来源,这套发电装置可以提供功率为 1.044mW 的直流电能。作为一种“永久寿命”的能源,这套自充电装置为多种电子设备充电,如温度计、心电图仪、计步器、手表、计算器、无线电通讯设备等。(新材料在线)

发布日期:2015/12/15 发布者: 点击数: