All-in-one and bipolar-membrane-free acid-alkaline hydrogel electrolytes for flexible high-voltage Zn-air batteries

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

4 Scopus Citations
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Author(s)

  • Siyuan Zhao
  • Tong Liu
  • Yawen Dai
  • Yang Wang
  • Zengjia Guo
  • Shuo Zhai
  • Jie Yu
  • Meng Ni

Detail(s)

Original languageEnglish
Article number132718
Journal / PublicationChemical Engineering Journal
Volume430
Issue numberPart 2
Online published28 Sep 2021
Publication statusPublished - 15 Feb 2022

Abstract

The low operating voltage of 1.4 V limits the widespread application of flexible Zn-air batteries (ZABs) in wearable electronics. However, a high-voltage flexible ZAB has not been achieved yet, which results from the few choices of fitted flexible electrolytes. Now we propose a novel, universal, and simple strategy to design all-in-one and membrane-free acid-alkaline flexible electrolytes based on thermo-reversible Pluronic® F127 hydrogels. Benefiting from the unique sol–gel transition property of Pluronic® F127 hydrogel, the acid and alkaline can be decoupled but integrated simultaneously in one hydrogel. Surprisingly, the as-developed ZAB achieves an unprecedentedly high voltage of 2 V, surpassing all the existing flexible ZABs. Meanwhile, this battery exhibits remarkable high-voltage stability of 37 h and a large area capacity of 1.35 mAh cm−2 without the use of costly bipolar membranes. Our work presents a pioneering example for flexible high-voltage ZAB and may further inspire other designs of flexible high-voltage aqueous batteries and decoupled dual-electrolyte batteries.

Research Area(s)

  • Acid-alkaline electrolyte, All-in-one, High-voltage, Hydrogel electrolyte, Thermo-reversible hydrogel, Zinc-air battery

Citation Format(s)

All-in-one and bipolar-membrane-free acid-alkaline hydrogel electrolytes for flexible high-voltage Zn-air batteries. / Zhao, Siyuan; Liu, Tong; Dai, Yawen; Wang, Yang; Guo, Zengjia; Zhai, Shuo; Yu, Jie; Zhi, Chunyi; Ni, Meng.

In: Chemical Engineering Journal, Vol. 430, No. Part 2, 132718, 15.02.2022.

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