Green lithium : photoelectrochemical extraction

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

3 Scopus Citations
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Author(s)

  • Zhen Li
  • Hao Huang
  • Yunduo Yao
  • Ye Zhu
  • Kuo-Wei Huang
  • Zhiping Lai

Detail(s)

Original languageEnglish
Article number23
Journal / PublicationPhotoniX
Volume4
Online published10 Jul 2023
Publication statusPublished - 1 Dec 2023

Link(s)

Abstract

Lithium (Li) is an essential element in modern energy production and storage devices. Technology to extract Li from seawater, which contains ~ 230 billion tons of Li, offers a solution to the widespread concern regarding quantitative and geographical limitations of future Li supplies. To obtain green Li from seawater, we propose an unassisted photoelectrochemical (PEC) Li extraction system based on an III-V-based triple-junction (3J) photoelectrode and a Li-ion selective membrane with only sunlight as an input. A light-harvesting/catalysis decoupling scheme yielded a 3J photoelectrode with excellent light-harvesting and catalysis reaction capabilities and superb stability over the 840 h of the extraction process. It allows the system to successfully enrich seawater Li by 4,350 times (i.e., from 0.18 ppm to 783.56 ppm) after three extraction stages. The overall reaction of the unassisted PEC green Li extraction system achieved 2.08 mg kJ−1 of solar-to-Li efficiency and 3.65% of solar-to-hydrogen efficiency. © The Author(s) 2023.

Research Area(s)

  • Green Li, Photoelectrochemical, Seawater, Unassisted Li extraction

Citation Format(s)

Green lithium: photoelectrochemical extraction. / Li, Zhongxiao; Li, Zhen; Huang, Hao et al.
In: PhotoniX, Vol. 4, 23, 01.12.2023.

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

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