A flexible self-powered humidity sensor with graphdiyne oxide

ChemPhysMater Pub Date : 2025-04-01 DOI:10.1016/j.chphma.2024.12.005

Jin Zhang , Weiqi Li , Cong Pan , Wenjie Ma , Ping Yu , Lanqun Mao

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Abstract

Humidity sensors are widely used in various fields of research. However, continuous power supplementation remains a significant challenge for further development. Harvesting energy directly from the ubiquitous atmospheric moisture to provide a sustainable water source is a promising strategy for developing self-powered systems. In this study, we developed a self-powered humidity sensor based on a flexible fabric substrate modified with graphdiyne oxide with a significant oxidation gradient. The device produces a high voltage of approximately 0.55 V with a 7.0 µA current through spontaneous adsorption of water molecules from the ambient atmosphere. At 100% relative humidity, the device exhibited long-term and cyclic output stabilities. Compared to other carbon materials, the low conductivity of graphdiyne enables an extremely high gradient of oxidation through moisture-electric field annealing polarization. Additionally, the large water uptake of graphdiyne oxide enhanced the sensing performance of the self-powered humidity sensor. This study demonstrates the significant potential of graphdiyne oxide in self-powered sensing applications.

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一个灵活的自供电湿度传感器与氧化石墨烯

湿度传感器被广泛应用于各个研究领域。然而，持续的电力补充仍然是进一步发展的重大挑战。直接从无处不在的大气湿气中收集能量，从而提供可持续的水源，是开发自供电系统的一种前景广阔的策略。在这项研究中，我们开发了一种自供电湿度传感器，该传感器基于用氧化石墨二炔修饰的具有显著氧化梯度的柔性织物基底。该器件通过自发吸附周围环境中的水分子，产生约 0.55 V 的高电压和 7.0 µA 的电流。在相对湿度为 100% 的条件下，该器件表现出长期和循环输出稳定性。与其他碳材料相比，石墨炔的电导率较低，可通过湿度-电场退火极化实现极高的氧化梯度。此外，石墨二炔氧化物的吸水性大，增强了自供电湿度传感器的传感性能。这项研究证明了氧化石墨二炔在自供电传感应用中的巨大潜力。

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

ChemPhysMater

CiteScore

3.90

自引率

0.00%

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