Simultaneous manipulation of electron/Zn2+ ion flux and desolvation effect enabled by in-situ built ultra-thin oxide-based artificial interphase for controlled deposition of zinc metal anodes

Changhoon Choi, Jung Been Park, Jong Hyun Park, Seungho Yu, Dong Wan Kim

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Aqueous Zn metal batteries (AZMBs) are promising candidates for large-scale energy storage systems, but metallic Zn anodes persistently suffer from severe dendrite proliferation, causing a steep decline in battery lifetime and limiting practical applications. In this study, an ultrathin, sturdy artificial solid electrolyte interphase (ASEI), mainly composed of interconnected ZnO nanoparticles (ZnO-rich ASEI), is fabricated on the Zn surface by a novel in-situ ZnO nucleation and growth strategy to alleviate this dendrite problem. The uniformly and densely coated ZnO-rich ASEI enabled simultaneous manipulation of electron/Zn2+ flux and the desolvation effect on the Zn surface, which minimized the occurrence of dendrites and side-reactions and improved Zn deposition kinetics. The ZnO-rich ASEI effectively guided preferential Zn growth along the Zn(002) plane with thorough 2D atom diffusion confinement for even Zn plating. Consequently, despite the thin thickness of ZnO-rich ASEI, the symmetric cell achieved an outstanding cyclability (over 550 h) even under harsher condition (20 mA cm−2, 10 mAh cm−2) than a realistic condition (5 mAh cm−2) of practical AZMBs. Moreover, the voltage hysteresis reduction effect stemming from ZnO-rich ASEI is excellent compared to state-of-the-art research related to ASEI@Zn. The superiority of ZnO-rich ASEI@Zn was also verified in a Zn/MnO2 full-cell test, exhibiting superb long-term cyclability. This study provides a new direction for future research on stable Zn anodes using ASEI fabrication.

Original languageEnglish
Article number141015
JournalChemical Engineering Journal
Volume456
DOIs
Publication statusPublished - 2023 Jan 15

Bibliographical note

Publisher Copyright:
© 2022 Elsevier B.V.

Keywords

  • Aqueous zinc-ion battery
  • Artificial interphase
  • Interface coating
  • Nucleation
  • Zinc dendrite
  • Zinc-metal anode

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering

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