Candle soot-enhanced pyroelectric generator for thermal energy harvesting and self-powered sensing

IF 6.2 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Carbon Letters Pub Date : 2026-08-07 DOI:10.1007/s42823-026-01115-5

Premkumar Bhosale, Sugato Hajra, Krystian Mistewicz, Mohamed Belal, Kushal Ruthvik Kaja, Basanta Kumar Panigrahi, Naratip Vittayakorn, Hoe Joon Kim

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Abstract

In recent years, there has been considerable interest in surface engineering using carbon-based coatings to improve pyroelectric performance. This work demonstrates a straightforward, economical method for a pyroelectric energy generator (PEG) using candle soot as a light-absorbing coating on a widely available PZT-based piezoelectric buzzer. Infrared (IR) lamp-induced thermal excitation was used to comprehensively assess the performance of the soot-coated and pristine PZT piezoelectric buzzer disk. Due to improved photothermal conversion, the coated PEG device exhibits a significant increase in electrical output. When exposed to the IR lamp, the short-circuit current reached approximately 204 nA, while the open-circuit voltage was approximately 4.8 V. Furthermore, under controlled thermal cycling, the device exhibited adjustable output and efficient energy storage. Further, the PEG was shown to be sensitive to temperature changes caused by human activity or the daily use of appliances, as well as to energy harvesting, suggesting its potential for self-powered sensing applications, such as breath monitoring, or converting energy from everyday appliances. Overall, this study presents a simple method to increase pyroelectric device performance efficiency in sensing and sustainable energy applications.

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蜡烛烟灰增强型热释电发生器，用于热能收集和自供电传感

近年来，人们对利用碳基涂层来改善热释电性能的表面工程产生了相当大的兴趣。这项工作展示了一种简单，经济的热电能量发生器（PEG）方法，使用蜡烛烟灰作为广泛使用的pz基压电蜂鸣器上的吸光涂层。采用红外灯热激发法综合评价了涂灰和原始PZT压电蜂鸣器片的性能。由于改进了光热转换，涂覆的PEG器件显示出显着增加的电输出。在红外光照射下，短路电流约为204 nA，开路电压约为4.8 V。此外，在可控的热循环下，该装置具有可调节的输出和高效的能量存储。此外，PEG被证明对人类活动或日常使用电器引起的温度变化以及能量收集敏感，这表明它具有自供电传感应用的潜力，例如呼吸监测或从日常电器转换能量。总的来说，本研究提出了一种简单的方法来提高热释电器件在传感和可持续能源应用中的性能效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Carbon Letters CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

7.30

自引率

20.00%

发文量

118

期刊介绍： Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.