Interfacial ion-electron conversion enhanced moisture energy harvester

IF 14.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Nature Communications Pub Date : 2025-07-17 DOI:10.1038/s41467-025-61913-9

Puying Li, Yajie Hu, Haiyan Wang, Tiancheng He, Huhu Cheng, Liangti Qu

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引用次数: 0

Abstract

Harvesting energy from the surrounding environment holds great promise for meeting decentralized energy demands and facilitating the transition to a low-carbon economy. Ubiquitous moisture in the air offers a natural energy reservoir, but very little has yet been harnessed. Conventional moisture-electricity generators collect moisture energy through the directional migration of ions in the moisture-sorption functional materials induced by a moisture field. However, the unsatisfactory output performance severely limits their practical implementation. Herein, we develop an ion-electron conversion enhanced moisture energy harvester (i-eMEH) by creating an ion-enriched storage interface and concurrently inducing a faradic process through the dual redox couples in the functional layer/electrode interfaces. The i-eMEH reaches a record-high peak current of 9.2 mA cm⁻² and power density of 6.7 W m⁻², ~60 times higher than those of reported moisture-electricity generators, and approaching the output level of perovskite solar cells and thermoelectric devices. The output rises to hundreds of milliamperes and tens of volts through the device enlargement and integration, thus efficiently charging the capacitor (4F) and commercial lithium battery. This moisture energy harvester manifests the great potential for miniaturized flexible electronics and presents a crucial step towards practical applications of moisture energy harvest.

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界面离子-电子转换增强型湿气能量收集器

从周围环境中收集能源对于满足分散的能源需求和促进向低碳经济的过渡有着巨大的希望。空气中无处不在的水分提供了一个天然的能量储存库，但尚未被利用的很少。传统的湿电发生器是通过湿场诱导吸湿功能材料中离子的定向迁移来收集湿能的。然而，输出性能的不理想严重限制了它们的实际实施。在此，我们开发了一种离子-电子转换增强的水分能量收集器（i-eMEH），通过创建一个富含离子的存储界面，并通过功能层/电极界面中的双氧化还原偶同时诱导faradic过程。i-eMEH的峰值电流达到了创纪录的9.2 mA cm−2，功率密度达到6.7 W m−2，是现有湿电发生器的60倍，接近钙钛矿太阳能电池和热电器件的输出水平。通过器件的放大和集成，输出提升到数百毫安和数十伏，从而有效地为电容器（4F）和商用锂电池充电。这种湿气能量采集器显示了微型柔性电子产品的巨大潜力，并向湿气能量采集器的实际应用迈出了关键的一步。

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来源期刊

Nature Communications Biological Science Disciplines-

CiteScore

24.90

自引率

2.40%

发文量

6928

审稿时长

3.7 months

期刊介绍： Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.