Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, P.R. China.
College of Chemistry and Materials Engineering, Zhejiang A & F University, Hangzhou 311300, P.R. China.
Nano Lett. 2022 Aug 24;22(16):6476-6483. doi: 10.1021/acs.nanolett.2c00919. Epub 2022 Aug 5.
Water-enabled electricity generation (WEG) technologies are considered to be an attractive and renewable approach to meet energy crisis and environmental pollution globally. However, the existing WEG technologies still face tremendous challenges including high material cost, harmful components, and specific environmental requirements. Herein, a high-performance wood-based moisture-enabled electric generator (WMEG) is fabricated. Natural wood is cut perpendicular to the tree growth direction and engineered by simple chemical modification. The obtained bilayer wood membrane has robust mechanical framework with aligned ion nanochannels, abundant dissociated functional groups, and spontaneous water adsorption in the air. At the relative humidity of 85%, one WMEG can generate a voltage of 0.57 V. The device can also effectively sense biological water information as a self-powered sensor. The biophile design contributes a practical moist-electric generation strategy that offers clean energy, especially for undeveloped and disaster-relief regions where electricity is limited by high cost or crippled power facilities.
水发电技术（WEG）被认为是一种有吸引力的可再生方法，可以解决全球能源危机和环境污染问题。然而，现有的 WEG 技术仍然面临着巨大的挑战，包括高材料成本、有害物质和特定的环境要求。在此，我们制备了一种高性能的基于木材的水分能电发生器（WMEG）。天然木材垂直于树木生长方向切割，并通过简单的化学改性进行工程设计。得到的双层木膜具有坚固的机械框架，其中排列有离子纳米通道、丰富的离解官能团和在空气中自发的水吸附。在相对湿度为 85%时，一个 WMEG 可以产生 0.57V 的电压。该装置还可以作为自供电传感器有效地感应生物水信息。亲生物设计提供了一种实用的湿电产生策略，提供了清洁能源，特别是对于那些由于成本高或电力设施瘫痪而电力有限的欠发达地区和灾区。
