A Bilayer Hydrogel with Heterogeneous Structures for Highly Efficient Moisture Energy Harvesting

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2025-04-22 DOI:10.1021/acsaem.5c0033510.1021/acsaem.5c00335

Wei Zhang, Hanxiao Zhang, Yuyan Zhou, Can Wang and Jiulong Sha*,

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引用次数: 0

Abstract

Moist-electric generators (MEG), which extract energy from ambient moisture, offer a potential solution to the escalating energy crisis. However, current MEG technologies encounter significant challenges, including pulsed output and limited power generation capacity. In this study, a heterogeneous hydrogel-based MEG (H-MEG), incorporating both hydrophilicity and double ion concentration gradients, was developed. A single H-MEG device (1 × 1 cm²) achieved a maximum open-circuit voltage (V_OC) of 0.64 V and a short-circuit current (I_SC) of 72.12 μA at 80% relative humidity. Furthermore, by employing series and parallel integration of H-MEG banks, enhanced performance was achieved with voltages of 6.62 V and currents of up to 670.86 μA, respectively. These scalable H-MEG devices could directly power commercial electronic devices, including light-emitting diodes and commercial calculators. This study proposes a cost-effective and highly efficient approach for harvesting electricity from moist air, significantly contributing to the advancement of green power sources.

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一种具有非均相结构的双层水凝胶，用于高效的水分能量收集

从环境湿度中提取能量的湿发电机（MEG），为不断升级的能源危机提供了一个潜在的解决方案。然而，目前的MEG技术面临着重大挑战，包括脉冲输出和有限的发电能力。本研究开发了一种同时具有亲水性和双离子浓度梯度的非均相水凝胶基MEG （H-MEG）。在80%的相对湿度下，单个H-MEG器件（1 × 1 cm2）的最大开路电压（VOC）为0.64 V，短路电流（ISC）为72.12 μA。此外，通过串联和并联集成H-MEG组，分别在电压为6.62 V和电流高达670.86 μA时获得了更高的性能。这些可扩展的H-MEG设备可以直接为商业电子设备供电，包括发光二极管和商业计算器。本研究提出了一种经济高效的从潮湿空气中收集电力的方法，为绿色能源的发展做出了重大贡献。

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来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.