Continuous Energy Harvesting from Ubiquitous Humidity Gradients using Liquid-Infused Nanofluidics

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Shuang Zheng
  • Jiayue Tang
  • Dong Lv
  • Mi Wang
  • Xuan Yang
  • Ruiran Hao
  • Mingzhan Wang
  • Yanlei Wang
  • Hongyan He

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number2106410
Journal / PublicationAdvanced Materials
Volume34
Issue number4
Online published29 Oct 2021
Publication statusPublished - 27 Jan 2022

Abstract

Humidity-based power generation that converts internal energy of water molecules into electricity is an emerging approach for harvesting clean energy from nature. Here it is proposed that intrinsic gradient within a humidity field near sweating surfaces, such as rivers, soil, or animal skin, is a promising power resource when integrated with liquid-infused nanofluidics. Specifically, capillary-stabilized ionic liquid (IL, Omim+Cl-) film is exposed to the above humidity field to create a sustained transmembrane water-content difference, which enables asymmetric ion-diffusion across the nanoconfined fluidics, facilitating long-term electricity generation with the power density of ≈12.11 µW cm-2. This high record is attributed to the nanoconfined IL that integrates van der Waals and electrostatic interactions to block movement of Omim+ clusters while allowing for directional diffusion of moisture-liberated Cl+. This humidity gradient triggers large ion-diffusion flux for power generation indicates great potential of sweating surfaces considering that most of the earth is covered by water or soil.

Research Area(s)

  • clean energy, humidity, nanofluidics, slippery surfaces, sweating surfaces

Citation Format(s)

Continuous Energy Harvesting from Ubiquitous Humidity Gradients using Liquid-Infused Nanofluidics. / Zheng, Shuang; Tang, Jiayue; Lv, Dong; Wang, Mi; Yang, Xuan; Hou, Changshun; Yi, Bo; Lu, Gang; Hao, Ruiran; Wang, Mingzhan; Wang, Yanlei; He, Hongyan; Yao, Xi.

In: Advanced Materials, Vol. 34, No. 4, 2106410, 27.01.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review