Weakly Solvating Effect Spawning Reliable Interfacial Chemistry for Aqueous Zn/Na Hybrid Batteries

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

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Author(s)

  • Yihan Yang
  • Guangmeng Qu
  • Hua Wei
  • Chao Liu
  • Yilun Lin
  • Xinming Li
  • Cuiping Han

Detail(s)

Original languageEnglish
Article number2203729
Journal / PublicationAdvanced Energy Materials
Volume13
Issue number12
Online published5 Feb 2023
Publication statusPublished - 24 Mar 2023

Abstract

The insufficient exploration of the interfacial chemistry of Zn anodes and electrolytes in an aqueous environment restricts the application potential of aqueous Zn batteries (AZBs). Herein, a durable anion-derived solid electrolyte interface (SEI) with high ion conduction properties is constructed by designing an aqueous electrolyte with a weakly solvating effect to manipulate the solvation structure of metal ions (Zn2+/Na+). The constructed SEI significantly restrains the dendrite formation and occurrence of adverse reactions on the surface of the Zn anode, endowing the Zn metal anode with high reversibility of deposition/stripping and ultra-long lifespan over 5000 h with an exceptional cumulative capacity of over 2.5 Ah cm−2. Significantly, the formation mechanism of the SEI, which is realized by the weakly solvating effect to promote the coordination between anions and metal ions (Zn2+/Na+), and the composition distribution of anion-derived inorganic-rich SEI, are clarified in detail. Furthermore, benefiting from the synergy of the elaborate SEI and the regulated electrolyte environment, the Zn//Prussian blue analogue (PBA) full battery can operate with a high voltage platform of 2.1 V and deliver 99.3% capacity retention after 5000 cycles. © 2023 Wiley-VCH GmbH.

Research Area(s)

  • aqueous batteries, high voltage, solid electrolyte interphase, weakly solvating effect, Zn anodes

Citation Format(s)

Weakly Solvating Effect Spawning Reliable Interfacial Chemistry for Aqueous Zn/Na Hybrid Batteries. / Yang, Yihan; Qu, Guangmeng; Wei, Hua et al.
In: Advanced Energy Materials, Vol. 13, No. 12, 2203729, 24.03.2023.

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