Self-powered sensors utilizing single-pillar thermocells with pyrolytic graphite sheet electrodes: harvesting body heat and solar thermal energy

IF 9 2区材料科学 Q1 CHEMISTRY, PHYSICAL Materials Today Energy Pub Date : 2024-08-28 DOI:10.1016/j.mtener.2024.101668

Lixian Jiang, Teruo Ebihara, Masakazu Mukaida, Kouki Akaike, Kazumasa Shimamoto, Shohei Horike, Qingshuo Wei

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Abstract

This study investigates the development of self-powered sensors employing single-pillar thermocells to harness body heat and solar thermal energy. A pyrolytic graphite sheet was selected for its low water vapor permeability, and its surface was modified to be hydrophilic to minimize interfacial resistance. Two types of DC–DC converters, Asahi Kasei Microdevices AP4473 and matrix mercury, underwent evaluation for compatibility with these thermocells. The compact 1.5 cm (1 cm × 1 cm × 1.5 cm) device effectively powered the AP4473 converter, illuminating a light-emitting diode. A larger device (2.5 cm × 2.5 cm × 1.5 cm) efficiently drove the matrix mercury converter, enabling the operation of bluetooth low-power sensors. These self-powered sensors wirelessly provided humidity and temperature data using solar thermal energy for approximately 4 h per day during peak temperature differences in January. This study showcases the potential of thermocells for sustainable energy harvesting and suggests avenues for future research, such as exploring alternative heat sources like geothermal energy to power these sensors.

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利用带有热解石墨片电极的单柱热电偶的自供电传感器：收集体热和太阳热能

本研究调查了自供电传感器的开发情况，该传感器采用单柱热电偶利用体热和太阳热能。由于热解石墨片的水蒸气渗透性较低，因此选用了这种石墨片，并对其表面进行了亲水改性，以尽量减少界面电阻。两种类型的直流-直流转换器（Asahi Kasei Microdevices AP4473 和矩阵汞）与这些热电偶的兼容性进行了评估。1.5 厘米（1 厘米 × 1 厘米 × 1.5 厘米）的紧凑型装置能有效地为 AP4473 转换器供电，并照亮一个发光二极管。较大的器件（2.5 厘米 × 2.5 厘米 × 1.5 厘米）可有效驱动矩阵汞转换器，使蓝牙低功耗传感器得以运行。这些自供电传感器利用太阳热能，在一月份的温差高峰期每天无线提供约 4 小时的湿度和温度数据。这项研究展示了热电偶在可持续能源收集方面的潜力，并为今后的研究提出了建议，例如探索地热能等替代热源为这些传感器供电。

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来源期刊

Materials Today Energy Materials Science-Materials Science (miscellaneous)

CiteScore

15.10

自引率

7.50%

发文量

291

审稿时长

15 days

期刊介绍： Materials Today Energy is a multi-disciplinary, rapid-publication journal focused on all aspects of materials for energy. Materials Today Energy provides a forum for the discussion of high quality research that is helping define the inclusive, growing field of energy materials. Part of the Materials Today family, Materials Today Energy offers authors rigorous peer review, rapid decisions, and high visibility. The editors welcome comprehensive articles, short communications and reviews on both theoretical and experimental work in relation to energy harvesting, conversion, storage and distribution, on topics including but not limited to: -Solar energy conversion -Hydrogen generation -Photocatalysis -Thermoelectric materials and devices -Materials for nuclear energy applications -Materials for Energy Storage -Environment protection -Sustainable and green materials