Electricity Generation with Sodium Alginate Hydrogel for Osmotic Energy Harvesting

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

1 Scopus Citations
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Author(s)

  • Junxian Pei
  • Guopeng Chen
  • Zining Li
  • Zuwei Zhou
  • Aofei Chen
  • Xingchi Jiang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)21666–21672
Journal / PublicationIndustrial and Engineering Chemistry Research
Volume62
Issue number50
Online published2 Nov 2023
Publication statusPublished - 10 Dec 2023

Abstract

Seawater covers 75% of the Earth’s surface, and it exists in nature as a vast resource. Harvesting energy from this tremendous resource provides a promising green approach to tackle the problem of electricity shortage. Herein, we develop a simple and effective ion-selective hydrogel membrane to harvest the osmotic energy from seawater and salt solutions at room temperature. Sodium alginate hydrogel, an ion-transport medium with numerous functional groups and a hierarchical porous structure, shows excellent ion-transport and ion-sieving capability in salt solutions. A single device can output a 0.16 V open-circuit voltage and 0.048 μW power in real seawater. Through a simple serial connection, the output voltage of the device can be further linearly improved to charge capacitors and thus light a light-emitting diode (LED) lamp. This research provides a new direction of material selection for hydrovoltaic electricity generation technology, which is conducive to expanding the practical applications of energy harvesting. © 2023 American Chemical Society.

Citation Format(s)

Electricity Generation with Sodium Alginate Hydrogel for Osmotic Energy Harvesting. / Pei, Junxian; Chen, Guopeng; Li, Zining et al.
In: Industrial and Engineering Chemistry Research, Vol. 62, No. 50, 10.12.2023, p. 21666–21672.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review